Merge gleb.loc:/home/uchum/work/bk/5.1

into  gleb.loc:/home/uchum/work/bk/5.1-opt

mysql-test/include/mix1.inc

@@ -28,7 +28,7 @@
 eval SET SESSION STORAGE_ENGINE = $engine_type;
 
 --disable_warnings
-drop table if exists t1,t2,t1m,t1i,t2m,t2i,t4;
+drop table if exists t1,t2,t3,t1m,t1i,t2m,t2i,t4;
 --enable_warnings
 
 
@@ -707,8 +707,67 @@ DISCONNECT c2;
 DROP TABLE t1,t2;
 
 
+#
+# Bug #25798: a query with forced index merge returns wrong result 
+#
+
+CREATE TABLE t1 (
+  id int NOT NULL auto_increment PRIMARY KEY,
+  b int NOT NULL,
+  c datetime NOT NULL,
+  INDEX idx_b(b),
+  INDEX idx_c(c)
+) ENGINE=InnoDB;
+
+CREATE TABLE t2 (
+  b int NOT NULL auto_increment PRIMARY KEY,
+  c datetime NOT NULL
+) ENGINE= MyISAM;
+
+INSERT INTO t2(c) VALUES ('2007-01-01');
+INSERT INTO t2(c) SELECT c FROM t2;
+INSERT INTO t2(c) SELECT c FROM t2;
+INSERT INTO t2(c) SELECT c FROM t2;
+INSERT INTO t2(c) SELECT c FROM t2;
+INSERT INTO t2(c) SELECT c FROM t2;
+INSERT INTO t2(c) SELECT c FROM t2;
+INSERT INTO t2(c) SELECT c FROM t2;
+INSERT INTO t2(c) SELECT c FROM t2;
+INSERT INTO t2(c) SELECT c FROM t2;
+INSERT INTO t2(c) SELECT c FROM t2;
+
+INSERT INTO t1(b,c) SELECT b,c FROM t2;
+UPDATE t2 SET c='2007-01-02';
+INSERT INTO t1(b,c) SELECT b,c FROM t2;
+UPDATE t2 SET c='2007-01-03';
+INSERT INTO t1(b,c) SELECT b,c FROM t2;
+
+set @@sort_buffer_size=8192;
+
+SELECT COUNT(*) FROM t1;
+
+--replace_column 9 #
+EXPLAIN 
+SELECT COUNT(*) FROM t1 
+  WHERE (c >= '2007-01-02' AND c <= '2007-01-03') OR b >= 1;
+SELECT COUNT(*) FROM t1 
+  WHERE (c >= '2007-01-02' AND c <= '2007-01-03') OR b >= 1;
+
+--replace_column 9 #
+EXPLAIN 
+SELECT COUNT(*) FROM t1 FORCE INDEX(idx_b, idx_c) 
+  WHERE (c >= '2007-01-02' AND c <= '2007-01-03') OR b >= 1;
+SELECT COUNT(*) FROM t1 FORCE INDEX(idx_b, idx_c)
+  WHERE (c >= '2007-01-02' AND c <= '2007-01-03') OR b >= 1;
+
+set @@sort_buffer_size=default;
+
+DROP TABLE t1,t2;
+
+
 --echo End of 5.0 tests
 
+
 #
 # Test of behaviour with CREATE ... SELECT
 #

mysql-test/r/innodb_mysql.result

 SET SESSION STORAGE_ENGINE = InnoDB;
-drop table if exists t1,t2,t1m,t1i,t2m,t2i,t4;
+drop table if exists t1,t2,t3,t1m,t1i,t2m,t2i,t4;
 create table t1 (
 c_id int(11) not null default '0',
 org_id int(11) default null,
@@ -680,6 +680,57 @@ INSERT INTO t1 VALUES (1);
 switch to connection default
 SET AUTOCOMMIT=default;
 DROP TABLE t1,t2;
+CREATE TABLE t1 (
+id int NOT NULL auto_increment PRIMARY KEY,
+b int NOT NULL,
+c datetime NOT NULL,
+INDEX idx_b(b),
+INDEX idx_c(c)
+) ENGINE=InnoDB;
+CREATE TABLE t2 (
+b int NOT NULL auto_increment PRIMARY KEY,
+c datetime NOT NULL
+) ENGINE= MyISAM;
+INSERT INTO t2(c) VALUES ('2007-01-01');
+INSERT INTO t2(c) SELECT c FROM t2;
+INSERT INTO t2(c) SELECT c FROM t2;
+INSERT INTO t2(c) SELECT c FROM t2;
+INSERT INTO t2(c) SELECT c FROM t2;
+INSERT INTO t2(c) SELECT c FROM t2;
+INSERT INTO t2(c) SELECT c FROM t2;
+INSERT INTO t2(c) SELECT c FROM t2;
+INSERT INTO t2(c) SELECT c FROM t2;
+INSERT INTO t2(c) SELECT c FROM t2;
+INSERT INTO t2(c) SELECT c FROM t2;
+INSERT INTO t1(b,c) SELECT b,c FROM t2;
+UPDATE t2 SET c='2007-01-02';
+INSERT INTO t1(b,c) SELECT b,c FROM t2;
+UPDATE t2 SET c='2007-01-03';
+INSERT INTO t1(b,c) SELECT b,c FROM t2;
+set @@sort_buffer_size=8192;
+SELECT COUNT(*) FROM t1;
+COUNT(*)
+3072
+EXPLAIN 
+SELECT COUNT(*) FROM t1 
+WHERE (c >= '2007-01-02' AND c <= '2007-01-03') OR b >= 1;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	ALL	idx_b,idx_c	NULL	NULL	NULL	#	Using where
+SELECT COUNT(*) FROM t1 
+WHERE (c >= '2007-01-02' AND c <= '2007-01-03') OR b >= 1;
+COUNT(*)
+3072
+EXPLAIN 
+SELECT COUNT(*) FROM t1 FORCE INDEX(idx_b, idx_c) 
+WHERE (c >= '2007-01-02' AND c <= '2007-01-03') OR b >= 1;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	index_merge	idx_b,idx_c	idx_c,idx_b	8,4	NULL	#	Using sort_union(idx_c,idx_b); Using where
+SELECT COUNT(*) FROM t1 FORCE INDEX(idx_b, idx_c)
+WHERE (c >= '2007-01-02' AND c <= '2007-01-03') OR b >= 1;
+COUNT(*)
+3072
+set @@sort_buffer_size=default;
+DROP TABLE t1,t2;
 End of 5.0 tests
 CREATE TABLE t1 (a int, b int);
 insert into t1 values (1,1),(1,2);

mysql-test/r/loaddata.result

@@ -86,6 +86,60 @@ field1	field2
 a"b	cd"ef
 a"b	c"d"e
 drop table t1;
+CREATE TABLE t1 (
+id INT AUTO_INCREMENT PRIMARY KEY,
+c1 VARCHAR(255)
+);
+CREATE TABLE t2 (
+id INT,
+c2 VARCHAR(255)
+);
+INSERT INTO t1 (c1) VALUES
+('r'),   ('rr'),   ('rrr'),   ('rrrr'),
+('.r'),  ('.rr'),  ('.rrr'),  ('.rrrr'),
+('r.'),  ('rr.'),  ('rrr.'),  ('rrrr.'),
+('.r.'), ('.rr.'), ('.rrr.'), ('.rrrr.');
+SELECT * FROM t1;
+id	c1
+1	r
+2	rr
+3	rrr
+4	rrrr
+5	.r
+6	.rr
+7	.rrr
+8	.rrrr
+9	r.
+10	rr.
+11	rrr.
+12	rrrr.
+13	.r.
+14	.rr.
+15	.rrr.
+16	.rrrr.
+SELECT * INTO OUTFILE 'MYSQLTEST_VARDIR/tmp/t1' FIELDS ENCLOSED BY 'r' FROM t1;
+r1r	rrrr
+r2r	rrrrrr
+r3r	rrrrrrrr
+r4r	rrrrrrrrrr
+r5r	r.rrr
+r6r	r.rrrrr
+r7r	r.rrrrrrr
+r8r	r.rrrrrrrrr
+r9r	rrr.r
+r10r	rrrrr.r
+r11r	rrrrrrr.r
+r12r	rrrrrrrrr.r
+r13r	r.rr.r
+r14r	r.rrrr.r
+r15r	r.rrrrrr.r
+r16r	r.rrrrrrrr.r
+LOAD DATA INFILE 'MYSQLTEST_VARDIR/tmp/t1' INTO TABLE t2 FIELDS ENCLOSED BY 'r';
+SELECT t1.id, c1, c2 FROM t1 LEFT  JOIN t2 ON t1.id=t2.id WHERE c1 != c2;
+id	c1	c2
+SELECT t1.id, c1, c2 FROM t1 RIGHT JOIN t2 ON t1.id=t2.id WHERE c1 != c2;
+id	c1	c2
+DROP TABLE t1,t2;
 create table t1 (a int default 100, b int, c varchar(60));
 load data infile '../std_data_ln/rpl_loaddata.dat' into table t1 (a, @b) set b=@b+10, c=concat("b=",@b);
 select * from t1;

mysql-test/r/partition.result

@@ -1267,14 +1267,4 @@ ALTER TABLE general_log PARTITION BY RANGE (TO_DAYS(event_time))
 ERROR HY000: Incorrect usage of PARTITION and log table
 ALTER TABLE general_log ENGINE = CSV;
 SET GLOBAL general_log = default;
-CREATE TABLE `t1` ( `a` varchar(1)) ENGINE=MyISAM
-PARTITION BY LIST (CASE a WHEN 'a' THEN 1
-WHEN 'b' THEN 2
-WHEN 'c' THEN 3
-END)  (
-PARTITION a VALUES IN (1), 
-PARTITION b VALUES IN (2),
-PARTITION c VALUES IN (3)
-);
-DROP TABLE t1;
 End of 5.1 tests

mysql-test/r/partition_bug18198.result

+drop table if exists t1;
+create table t1 (col1 datetime)
+partition by range(datediff(col1,col1))
+(partition p0 values less than (10), partition p1 values less than (30));
+drop table t1;
+create table t1 (col1 int)
+partition by range(greatest(col1,10))
+(partition p0 values less than (2), partition p1 values less than (6));
+ERROR HY000: This partition function is not allowed
+create table t1 (col1 int)
+partition by range(isnull(col1))
+(partition p0 values less than (2), partition p1 values less than (6));
+ERROR HY000: This partition function is not allowed
+create table t1 (col1 int)
+partition by range(least(col1,12))
+(partition p0 values less than (2), partition p1 values less than (6));
+ERROR HY000: This partition function is not allowed
+create table t1 (col1 int)
+partition by range(case when col1>0 then 10 else 20 end)
+(partition p0 values less than (2), partition p1 values less than (6));
+ERROR HY000: This partition function is not allowed
+create table t1 (col1 int)
+partition by range(ifnull(col1,5))
+(partition p0 values less than (2), partition p1 values less than (6));
+ERROR HY000: This partition function is not allowed
+create table t1 (col1 int)
+partition by range(nullif(col1,5))
+(partition p0 values less than (2), partition p1 values less than (6));
+ERROR HY000: This partition function is not allowed
+create table t1 (col1 int)
+partition by range(bit_length(col1))
+(partition p0 values less than (2), partition p1 values less than (6));
+ERROR HY000: This partition function is not allowed
+create table t1 (col1 char(5))
+partition by range(bit_length(col1))
+(partition p0 values less than (2), partition p1 values less than (6));
+ERROR HY000: This partition function is not allowed
+create table t1 (col1 int)
+partition by range(char_length(col1))
+(partition p0 values less than (2), partition p1 values less than (6));
+ERROR HY000: This partition function is not allowed
+create table t1 (col1 char(5))
+partition by range(char_length(col1))
+(partition p0 values less than (2), partition p1 values less than (6));
+ERROR HY000: This partition function is not allowed
+create table t1 (col1 char(5))
+partition by range(character_length(col1))
+(partition p0 values less than (2), partition p1 values less than (6));
+ERROR HY000: This partition function is not allowed
+create table t1 (col1 int)
+partition by range(find_in_set(col1,1))
+(partition p0 values less than (2), partition p1 values less than (6));
+ERROR HY000: This partition function is not allowed
+create table t1 (col1 char(5))
+partition by range(find_in_set(col1,'1'))
+(partition p0 values less than (2), partition p1 values less than (6));
+ERROR HY000: This partition function is not allowed
+create table t1 (col1 int)
+partition by range(instr(col1,3))
+(partition p0 values less than (2), partition p1 values less than (6));
+ERROR HY000: This partition function is not allowed
+create table t1 (col1 char(5))
+partition by range(instr(col1,'3'))
+(partition p0 values less than (2), partition p1 values less than (6));
+ERROR HY000: This partition function is not allowed
+create table t1 (col1 char(5))
+partition by range(length(col1))
+(partition p0 values less than (2), partition p1 values less than (6));
+ERROR HY000: This partition function is not allowed
+create table t1 (col1 char(5))
+partition by range(locate(1,col1))
+(partition p0 values less than (2), partition p1 values less than (6));
+ERROR HY000: This partition function is not allowed
+create table t1 (col1 int)
+partition by range(locate(1,col1))
+(partition p0 values less than (2), partition p1 values less than (6));
+ERROR HY000: This partition function is not allowed
+create table t1 (col1 char(5))
+partition by range(octet_length(col1))
+(partition p0 values less than (2), partition p1 values less than (6));
+ERROR HY000: This partition function is not allowed
+create table t1 (col1 char(5))
+partition by range(position(1 in col1))
+(partition p0 values less than (2), partition p1 values less than (6));
+ERROR HY000: This partition function is not allowed
+create table t1 (col1 int)
+partition by range(position(1 in col1))
+(partition p0 values less than (2), partition p1 values less than (6));
+ERROR HY000: This partition function is not allowed
+create table t1 (col1 char(5))
+partition by range(strcmp(col1,2))
+(partition p0 values less than (2), partition p1 values less than (6));
+ERROR HY000: This partition function is not allowed
+create table t1 (col1 int)
+partition by range(strcmp(col1,2))
+(partition p0 values less than (2), partition p1 values less than (6));
+ERROR HY000: This partition function is not allowed
+create table t1 (col1 int)
+partition by range(crc32(col1))
+(partition p0 values less than (2), partition p1 values less than (6));
+ERROR HY000: This partition function is not allowed
+create table t1 (col1 int)
+partition by range(round(col1))
+(partition p0 values less than (2), partition p1 values less than (6));
+ERROR HY000: This partition function is not allowed
+create table t1 (col1 int)
+partition by range(sign(col1))
+(partition p0 values less than (2), partition p1 values less than (6));
+ERROR HY000: This partition function is not allowed
+create table t1 (col1 datetime)
+partition by range(period_add(col1,5))
+(partition p0 values less than (10), partition p1 values less than (30));
+ERROR HY000: This partition function is not allowed
+create table t1 (col1 datetime, col2 datetime)
+partition by range(period_diff(col1,col2))
+(partition p0 values less than (10), partition p1 values less than (30));
+ERROR HY000: This partition function is not allowed
+create table t1 (col1 int, col2 int)
+partition by range(period_diff(col1,col2))
+(partition p0 values less than (10), partition p1 values less than (30));
+ERROR HY000: This partition function is not allowed
+create table t1 (col1 datetime)
+partition by range(timestampdiff(day,5,col1))
+(partition p0 values less than (10), partition p1 values less than (30));
+ERROR HY000: This partition function is not allowed
+create table t1 (col1 date)
+partition by range(unix_timestamp(col1))
+(partition p0 values less than (10), partition p1 values less than (30));
+ERROR HY000: This partition function is not allowed
+create table t1 (col1 datetime)
+partition by range(week(col1))
+(partition p0 values less than (10), partition p1 values less than (30));
+ERROR HY000: This partition function is not allowed
+create table t1 (col1 varchar(25))
+partition by range(cast(col1 as signed))
+(partition p0 values less than (10), partition p1 values less than (30));
+ERROR HY000: This partition function is not allowed
+create table t1 (col1 varchar(25))
+partition by range(convert(col1,unsigned))
+(partition p0 values less than (10), partition p1 values less than (30));
+ERROR HY000: This partition function is not allowed
+create table t1 (col1 int)
+partition by range(col1 | 20)
+(partition p0 values less than (10), partition p1 values less than (30));
+ERROR HY000: This partition function is not allowed
+create table t1 (col1 int)
+partition by range(col1 & 20)
+(partition p0 values less than (10), partition p1 values less than (30));
+ERROR HY000: This partition function is not allowed
+create table t1 (col1 int)
+partition by range(col1 ^ 20)
+(partition p0 values less than (10), partition p1 values less than (30));
+ERROR HY000: This partition function is not allowed
+create table t1 (col1 int)
+partition by range(col1 << 20)
+(partition p0 values less than (10), partition p1 values less than (30));
+ERROR HY000: This partition function is not allowed
+create table t1 (col1 int)
+partition by range(col1 >> 20)
+(partition p0 values less than (10), partition p1 values less than (30));
+ERROR HY000: This partition function is not allowed
+create table t1 (col1 int)
+partition by range(~col1)
+(partition p0 values less than (10), partition p1 values less than (30));
+ERROR HY000: This partition function is not allowed
+create table t1 (col1 int)
+partition by range(bit_count(col1))
+(partition p0 values less than (10), partition p1 values less than (30));
+ERROR HY000: This partition function is not allowed
+create table t1 (col1 int)
+partition by range(inet_aton(col1))
+(partition p0 values less than (10), partition p1 values less than (30));
+ERROR HY000: This partition function is not allowed

mysql-test/r/partition_charset.result

@@ -16,3 +16,7 @@ s1
 1
 3
 drop table t1;
+create table t1 (a varchar(1), primary key (a))
+partition by list (ascii(a))
+(partition p1 values in (65));
+ERROR HY000: This partition function is not allowed

mysql-test/r/partition_error.result

@@ -25,7 +25,7 @@ partitions 3
 (partition x1 values in (1,2,9,4) tablespace ts1,
 partition x2 values in (3, 11, 5, 7) tablespace ts2,
 partition x3 values in (16, 8, 5+19, 70-43) tablespace ts3);
-ERROR HY000: The PARTITION function returns the wrong type
+ERROR HY000: This partition function is not allowed
 CREATE TABLE t1 (
 a int not null,
 b int not null,
@@ -89,7 +89,7 @@ partitions 3
 (partition x1 tablespace ts1,
 partition x2 tablespace ts2,
 partition x3 tablespace ts3);
-ERROR HY000: The PARTITION function returns the wrong type
+ERROR HY000: This partition function is not allowed
 CREATE TABLE t1 (
 a int not null,
 b int not null,
@@ -422,7 +422,7 @@ partition by range (sin(a))
 partitions 2
 (partition x1 values less than (4),
 partition x2 values less than (5));
-ERROR HY000: The PARTITION function returns the wrong type
+ERROR HY000: This partition function is not allowed
 CREATE TABLE t1 (
 a int not null,
 b int not null,
@@ -600,7 +600,7 @@ ERROR HY000: Partition constant is out of partition function domain
 create table t1 (v varchar(12))
 partition by range (ascii(v))
 (partition p0 values less than (10));
-drop table t1;
+ERROR HY000: This partition function is not allowed
 create table t1 (a int)
 partition by hash (rand(a));
 ERROR 42000: Constant/Random expression in (sub)partitioning function is not allowed near ')' at line 2
@@ -619,4 +619,4 @@ partition by range (a + (select count(*) from t1))
 ERROR HY000: This partition function is not allowed
 create table t1 (a char(10))
 partition by hash (extractvalue(a,'a'));
-ERROR HY000: The PARTITION function returns the wrong type
+ERROR HY000: This partition function is not allowed

mysql-test/r/partition_hash.result

 drop table if exists t1;
-create table t1 (a varchar(10) charset latin1 collate latin1_bin)
-partition by hash(length(a))
-partitions 10;
-insert into t1 values (''),(' '),('a'),('a '),('a  ');
-explain partitions select * from t1 where a='a ';
-id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	p0	ALL	NULL	NULL	NULL	NULL	5	Using where
-explain partitions select * from t1 where a='a';
-id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	p0	ALL	NULL	NULL	NULL	NULL	5	Using where
-explain partitions select * from t1 where a='a ' OR a='a';
-id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	p0	ALL	NULL	NULL	NULL	NULL	5	Using where
-drop table t1;
 create table t1 (a int unsigned)
 partition by hash(a div 2)
 partitions 4;

mysql-test/r/partition_list.result

@@ -295,3 +295,7 @@ select * from t1;
 a
 100
 drop table t1;
+create table t1 (a char(1))
+partition by list (ascii(ucase(a)))
+(partition p1 values in (2));
+ERROR HY000: This partition function is not allowed

mysql-test/r/partition_mgm.result

@@ -10,13 +10,13 @@ subpartition sp01, subpartition sp02));
 ERROR HY000: Wrong number of subpartitions defined, mismatch with previous setting
 drop table t1;
 CREATE TABLE t1 (f_date DATE, f_varchar VARCHAR(30))
-PARTITION BY HASH(CAST(YEAR(f_date) AS SIGNED INTEGER)) PARTITIONS 2;
+PARTITION BY HASH(YEAR(f_date)) PARTITIONS 2;
 SHOW CREATE TABLE t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
   `f_date` date DEFAULT NULL,
   `f_varchar` varchar(30) DEFAULT NULL
-) ENGINE=MyISAM DEFAULT CHARSET=latin1 /*!50100 PARTITION BY HASH (CAST(YEAR(f_date) AS SIGNED INTEGER)) PARTITIONS 2  */
+) ENGINE=MyISAM DEFAULT CHARSET=latin1 /*!50100 PARTITION BY HASH (YEAR(f_date)) PARTITIONS 2  */
 hello/master-data/test/t1#P#p0.MYD
 hello/master-data/test/t1#P#p0.MYI
 hello/master-data/test/t1#P#p1.MYD
@@ -29,7 +29,7 @@ Table	Create Table
 t1	CREATE TABLE `t1` (
   `f_date` date DEFAULT NULL,
   `f_varchar` varchar(30) DEFAULT NULL
-) ENGINE=MyISAM DEFAULT CHARSET=latin1 /*!50100 PARTITION BY HASH (CAST(YEAR(f_date) AS SIGNED INTEGER)) PARTITIONS 1  */
+) ENGINE=MyISAM DEFAULT CHARSET=latin1 /*!50100 PARTITION BY HASH (YEAR(f_date)) PARTITIONS 1  */
 hello/master-data/test/t1#P#p0.MYD
 hello/master-data/test/t1#P#p0.MYI
 hello/master-data/test/t1.frm

mysql-test/r/partition_pruning.result

@@ -676,25 +676,6 @@ f_int1	f_int2
 8	8
 9	9
 drop table t1;
-create table t1 (a char(10) binary)
-partition by list(length(a))
-(partition p1 values in (1),
-partition p2 values in (2),
-partition p3 values in (3),
-partition p4 values in (4),
-partition p5 values in (5)
-);
-insert into t1 values ('a'),('bb'),('ccc'),('dddd'),('eeEee');
-select * from t1 where a>='a' and a <= 'dddd';
-a
-a
-bb
-ccc
-dddd
-explain partitions select * from t1 where a>='a' and a <= 'dddd';
-id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	p1,p2,p3,p4,p5	ALL	NULL	NULL	NULL	NULL	5	Using where
-drop table t1;
 create table t1 (f_int1 integer) partition by list(abs(mod(f_int1,2)))
 subpartition by hash(f_int1) subpartitions 2
 (
@@ -847,23 +828,58 @@ explain partitions select * from t1 where a = 18446744073709551614;
 id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables
 drop table t1;
-create table t1 (a int) 
-partition by range((a & 0xFF) << 56) (
-partition p0 values less than (0x40 << 56),
-partition p1 values less than (0x80 << 56),
-partition p2 values less than (0xFF << 56)
+create table t1 (a int)
+partition by range(a) (
+partition p0 values less than (64),
+partition p1 values less than (128),
+partition p2 values less than (255)
+);
+create table t2 (a int)
+partition by range(a+0) (
+partition p0 values less than (64),
+partition p1 values less than (128),
+partition p2 values less than (255)
 );
 insert into t1 values (0x20), (0x20), (0x41), (0x41), (0xFE), (0xFE);
+insert into t2 values (0x20), (0x20), (0x41), (0x41), (0xFE), (0xFE);
 explain partitions select * from t1 where a=0;
 id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t1	p0	ALL	NULL	NULL	NULL	NULL	2	Using where
+explain partitions select * from t2 where a=0;
+id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t2	p0	ALL	NULL	NULL	NULL	NULL	2	Using where
 explain partitions select * from t1 where a=0xFE;
 id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t1	p2	ALL	NULL	NULL	NULL	NULL	2	Using where
-explain partitions select * from t1 where a>0xFE and a<= 0xFF;
+explain partitions select * from t2 where a=0xFE;
+id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t2	p2	ALL	NULL	NULL	NULL	NULL	2	Using where
+explain partitions select * from t1 where a > 0xFE AND a <= 0xFF;
 id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables
+explain partitions select * from t2 where a > 0xFE AND a <= 0xFF;
+id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables
+explain partitions select * from t1 where a >= 0xFE AND a <= 0xFF;
+id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	p2	ALL	NULL	NULL	NULL	NULL	2	Using where
+explain partitions select * from t2 where a >= 0xFE AND a <= 0xFF;
+id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t2	p2	ALL	NULL	NULL	NULL	NULL	2	Using where
+explain partitions select * from t1 where a < 64 AND a >= 63;
+id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	p0	ALL	NULL	NULL	NULL	NULL	2	Using where
+explain partitions select * from t2 where a < 64 AND a >= 63;
+id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t2	p0	ALL	NULL	NULL	NULL	NULL	2	Using where
+explain partitions select * from t1 where a <= 64 AND a >= 63;
+id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	p0,p1	ALL	NULL	NULL	NULL	NULL	4	Using where
+explain partitions select * from t2 where a <= 64 AND a >= 63;
+id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t2	p0,p1	ALL	NULL	NULL	NULL	NULL	4	Using where
 drop table t1;
+drop table t2;
 create table t1(a bigint unsigned not null) partition by range(a+0) (
 partition p1 values less than (10),
 partition p2 values less than (20),

mysql-test/r/partition_range.result

 drop table if exists t1;
-create table t1 (a varchar(10) charset latin1 collate latin1_bin, b int)
-partition by range (length(a) * b)
-(partition p0 values less than (2), partition p1 values less than (400));
-insert into t1 values ('a ', 2),('a',3);
-drop table t1;
-create table t1 (a varchar(10) charset latin1 collate latin1_bin, b int)
-partition by range (b* length(a) * b)
-(partition p0 values less than (2), partition p1 values less than (400));
-insert into t1 values ('a ', 2),('a',3);
-drop table t1;
-create table t1 (a varchar(10) charset latin1 collate latin1_bin,
-b varchar(10) charset latin1 collate latin1_bin)
-partition by range (length(b) * length(a))
-(partition p0 values less than (2), partition p1 values less than (400));
-insert into t1 values ('a ', 'b  '),('a','b');
-drop table t1;
-create table t1 (a varchar(10) charset latin1 collate latin1_bin,
-b varchar(10) charset latin1 collate latin1_bin)
-partition by range (length(a) * length(b))
-(partition p0 values less than (2), partition p1 values less than (400));
-insert into t1 values ('a ', 'b  '),('a','b');
-drop table t1;
-create table t1 (a varchar(10) charset latin1 collate latin1_bin,
-b varchar(10) charset latin1 collate latin1_bin, c int)
-partition by range (length(a) * c)
-(partition p0 values less than (2), partition p1 values less than (400));
-insert into t1 values ('a ', 'b  ', 2),('a','b', 3);
-drop table t1;
-create table t1 (a varchar(10) charset latin1 collate latin1_bin,
-b varchar(10) charset latin1 collate latin1_bin, c int)
-partition by range (c * length(a))
-(partition p0 values less than (2), partition p1 values less than (400));
-insert into t1 values ('a ', 'b  ', 2),('a','b', 3);
-drop table t1;
 create table t1 (a int unsigned)
 partition by range (a)
 (partition pnull values less than (0),
@@ -109,7 +75,7 @@ id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t1	pnull_pnullsp0,pnull_pnullsp1,p0_p0sp0,p0_p0sp1	ALL	NULL	NULL	NULL	NULL	4	Using where
 explain partitions select * from t1 where a > 1;
 id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	p1_p1sp0,p1_p1sp1	ALL	NULL	NULL	NULL	NULL	2	Using where
+1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	Impossible WHERE noticed after reading const tables
 drop table t1;
 CREATE TABLE t1 (
 a int not null,
@@ -743,45 +709,3 @@ WHERE (a >= '2004-07-01' AND a <= '2004-09-30') OR
 id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t1	p407,p408,p409,p507,p508,p509	ALL	NULL	NULL	NULL	NULL	18	Using where
 DROP TABLE t1;
-create table t1 (a varchar(20))
-partition by range (crc32(md5(a)))
-(partition p0 values less than (100),
-partition p1 values less than maxvalue);
-insert into t1 values ("12345678901234567890");
-insert into t1 values ("A2345678901234567890");
-insert into t1 values ("B2345678901234567890");
-insert into t1 values ("1234567890123456789");
-insert into t1 values ("1234567890123456");
-select * from t1;
-a
-12345678901234567890
-A2345678901234567890
-B2345678901234567890
-1234567890123456789
-1234567890123456
-explain partitions select * from t1 where a = "12345678901234567890";
-id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	p1	ALL	NULL	NULL	NULL	NULL	5	Using where
-explain partitions select * from t1 where a = "12345678901234567890" OR
-a = "A2345678901234567890" OR
-a = "B2345678901234567890" OR
-a = "C2345678901234567890";
-id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	p1	ALL	NULL	NULL	NULL	NULL	5	Using where
-explain partitions select * from t1 where a = "01234567890123456";
-id	select_type	table	partitions	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	p1	ALL	NULL	NULL	NULL	NULL	5	Using where
-select * from t1 where a = "01234567890123456";
-a
-select * from t1 where a = "12345678901234567890" OR
-a = "A2345678901234567890" OR
-a = "B2345678901234567890" OR
-a = "C2345678901234567890";
-a
-12345678901234567890
-A2345678901234567890
-B2345678901234567890
-select * from t1 where a = "12345678901234567890";
-a
-12345678901234567890
-drop table t1;

mysql-test/t/loaddata.test

@@ -67,6 +67,41 @@ load data infile '../std_data_ln/loaddata_dq.dat' into table t1 fields terminate
 select * from t1;
 drop table t1;
 
+#
+# Bug #29294 SELECT INTO OUTFILE/LOAD DATA INFILE with special
+# characters in the FIELDS ENCLOSED BY clause
+#
+
+CREATE TABLE t1 (
+  id INT AUTO_INCREMENT PRIMARY KEY,
+  c1 VARCHAR(255)
+);
+
+CREATE TABLE t2 (
+  id INT,
+  c2 VARCHAR(255)
+);
+
+INSERT INTO t1 (c1) VALUES
+  ('r'),   ('rr'),   ('rrr'),   ('rrrr'),
+  ('.r'),  ('.rr'),  ('.rrr'),  ('.rrrr'),
+  ('r.'),  ('rr.'),  ('rrr.'),  ('rrrr.'),
+  ('.r.'), ('.rr.'), ('.rrr.'), ('.rrrr.');
+SELECT * FROM t1;
+
+--exec rm -f $MYSQLTEST_VARDIR/tmp/t1
+--replace_result $MYSQLTEST_VARDIR MYSQLTEST_VARDIR
+eval SELECT * INTO OUTFILE '$MYSQLTEST_VARDIR/tmp/t1' FIELDS ENCLOSED BY 'r' FROM t1;
+--exec cat $MYSQLTEST_VARDIR/tmp/t1
+
+--replace_result $MYSQLTEST_VARDIR MYSQLTEST_VARDIR
+eval LOAD DATA INFILE '$MYSQLTEST_VARDIR/tmp/t1' INTO TABLE t2 FIELDS ENCLOSED BY 'r';
+SELECT t1.id, c1, c2 FROM t1 LEFT  JOIN t2 ON t1.id=t2.id WHERE c1 != c2;
+SELECT t1.id, c1, c2 FROM t1 RIGHT JOIN t2 ON t1.id=t2.id WHERE c1 != c2;
+
+--exec rm $MYSQLTEST_VARDIR/tmp/t1
+DROP TABLE t1,t2;
+
 # End of 4.1 tests
 
 #

mysql-test/t/partition.test

@@ -1496,17 +1496,7 @@ SET GLOBAL general_log = default;
 
 #
 # Bug #27084 partitioning by list seems failing when using case 
+# BUG #18198: Case no longer supported, test case removed
 #
-CREATE TABLE `t1` ( `a` varchar(1)) ENGINE=MyISAM
- PARTITION BY LIST (CASE a WHEN 'a' THEN 1
- WHEN 'b' THEN 2
- WHEN 'c' THEN 3
- END)  (
- PARTITION a VALUES IN (1), 
- PARTITION b VALUES IN (2),
- PARTITION c VALUES IN (3)
-);
-
-DROP TABLE t1;
 
 --echo End of 5.1 tests

mysql-test/t/partition_bug18198.test

+-- source include/have_partition.inc
+--disable_warnings
+drop table if exists t1;
+--enable_warnings
+
+create table t1 (col1 datetime)
+partition by range(datediff(col1,col1))
+(partition p0 values less than (10), partition p1 values less than (30));
+drop table t1;
+
+-- error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
+create table t1 (col1 int)
+partition by range(greatest(col1,10))
+(partition p0 values less than (2), partition p1 values less than (6));
+
+-- error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
+create table t1 (col1 int)
+partition by range(isnull(col1))
+(partition p0 values less than (2), partition p1 values less than (6));
+
+-- error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
+create table t1 (col1 int)
+partition by range(least(col1,12))
+(partition p0 values less than (2), partition p1 values less than (6));
+
+-- error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
+create table t1 (col1 int)
+partition by range(case when col1>0 then 10 else 20 end)
+(partition p0 values less than (2), partition p1 values less than (6));
+
+-- error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
+create table t1 (col1 int)
+partition by range(ifnull(col1,5))
+(partition p0 values less than (2), partition p1 values less than (6));
+
+-- error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
+create table t1 (col1 int)
+partition by range(nullif(col1,5))
+(partition p0 values less than (2), partition p1 values less than (6));
+
+-- error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
+create table t1 (col1 int)
+partition by range(bit_length(col1))
+(partition p0 values less than (2), partition p1 values less than (6));
+
+-- error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
+create table t1 (col1 char(5))
+partition by range(bit_length(col1))
+(partition p0 values less than (2), partition p1 values less than (6));
+
+-- error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
+create table t1 (col1 int)
+partition by range(char_length(col1))
+(partition p0 values less than (2), partition p1 values less than (6));
+
+-- error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
+create table t1 (col1 char(5))
+partition by range(char_length(col1))
+(partition p0 values less than (2), partition p1 values less than (6));
+
+-- error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
+create table t1 (col1 char(5))
+partition by range(character_length(col1))
+(partition p0 values less than (2), partition p1 values less than (6));
+
+-- error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
+create table t1 (col1 int)
+partition by range(find_in_set(col1,1))
+(partition p0 values less than (2), partition p1 values less than (6));
+
+-- error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
+create table t1 (col1 char(5))
+partition by range(find_in_set(col1,'1'))
+(partition p0 values less than (2), partition p1 values less than (6));
+
+-- error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
+create table t1 (col1 int)
+partition by range(instr(col1,3))
+(partition p0 values less than (2), partition p1 values less than (6));
+
+-- error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
+create table t1 (col1 char(5))
+partition by range(instr(col1,'3'))
+(partition p0 values less than (2), partition p1 values less than (6));
+
+-- error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
+create table t1 (col1 char(5))
+partition by range(length(col1))
+(partition p0 values less than (2), partition p1 values less than (6));
+
+-- error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
+create table t1 (col1 char(5))
+partition by range(locate(1,col1))
+(partition p0 values less than (2), partition p1 values less than (6));
+
+-- error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
+create table t1 (col1 int)
+partition by range(locate(1,col1))
+(partition p0 values less than (2), partition p1 values less than (6));
+
+-- error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
+create table t1 (col1 char(5))
+partition by range(octet_length(col1))
+(partition p0 values less than (2), partition p1 values less than (6));
+
+-- error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
+create table t1 (col1 char(5))
+partition by range(position(1 in col1))
+(partition p0 values less than (2), partition p1 values less than (6));
+
+-- error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
+create table t1 (col1 int)
+partition by range(position(1 in col1))
+(partition p0 values less than (2), partition p1 values less than (6));
+
+-- error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
+create table t1 (col1 char(5))
+partition by range(strcmp(col1,2))
+(partition p0 values less than (2), partition p1 values less than (6));
+
+-- error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
+create table t1 (col1 int)
+partition by range(strcmp(col1,2))
+(partition p0 values less than (2), partition p1 values less than (6));
+
+-- error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
+create table t1 (col1 int)
+partition by range(crc32(col1))
+(partition p0 values less than (2), partition p1 values less than (6));
+
+-- error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
+create table t1 (col1 int)
+partition by range(round(col1))
+(partition p0 values less than (2), partition p1 values less than (6));
+
+-- error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
+create table t1 (col1 int)
+partition by range(sign(col1))
+(partition p0 values less than (2), partition p1 values less than (6));
+
+-- error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
+create table t1 (col1 datetime)
+partition by range(period_add(col1,5))
+(partition p0 values less than (10), partition p1 values less than (30));
+
+-- error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
+create table t1 (col1 datetime, col2 datetime)
+partition by range(period_diff(col1,col2))
+(partition p0 values less than (10), partition p1 values less than (30));
+
+-- error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
+create table t1 (col1 int, col2 int)
+partition by range(period_diff(col1,col2))
+(partition p0 values less than (10), partition p1 values less than (30));
+
+-- error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
+create table t1 (col1 datetime)
+partition by range(timestampdiff(day,5,col1))
+(partition p0 values less than (10), partition p1 values less than (30));
+
+-- error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
+create table t1 (col1 date)
+partition by range(unix_timestamp(col1))
+(partition p0 values less than (10), partition p1 values less than (30));
+
+-- error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
+create table t1 (col1 datetime)
+partition by range(week(col1))
+(partition p0 values less than (10), partition p1 values less than (30));
+
+-- error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
+create table t1 (col1 varchar(25))
+partition by range(cast(col1 as signed))
+(partition p0 values less than (10), partition p1 values less than (30));
+
+-- error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
+create table t1 (col1 varchar(25))
+partition by range(convert(col1,unsigned))
+(partition p0 values less than (10), partition p1 values less than (30));
+
+-- error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
+create table t1 (col1 int)
+partition by range(col1 | 20)
+(partition p0 values less than (10), partition p1 values less than (30));
+
+-- error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
+create table t1 (col1 int)
+partition by range(col1 & 20)
+(partition p0 values less than (10), partition p1 values less than (30));
+
+-- error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
+create table t1 (col1 int)
+partition by range(col1 ^ 20)
+(partition p0 values less than (10), partition p1 values less than (30));
+
+-- error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
+create table t1 (col1 int)
+partition by range(col1 << 20)
+(partition p0 values less than (10), partition p1 values less than (30));
+
+-- error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
+create table t1 (col1 int)
+partition by range(col1 >> 20)
+(partition p0 values less than (10), partition p1 values less than (30));
+
+-- error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
+create table t1 (col1 int)
+partition by range(~col1)
+(partition p0 values less than (10), partition p1 values less than (30));
+
+-- error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
+create table t1 (col1 int)
+partition by range(bit_count(col1))
+(partition p0 values less than (10), partition p1 values less than (30));
+
+-- error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
+create table t1 (col1 int)
+partition by range(inet_aton(col1))
+(partition p0 values less than (10), partition p1 values less than (30));

mysql-test/t/partition_charset.test

@@ -19,3 +19,11 @@ flush tables;
 set names latin1;
 select * from t1;
 drop table t1;
+
+-- error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
+create table t1 (a varchar(1), primary key (a))
+partition by list (ascii(a))
+(partition p1 values in (65));
+#insert into t1 values ('A');
+#replace into t1 values ('A');
+#drop table t1;

mysql-test/t/partition_error.test

@@ -33,7 +33,7 @@ partitions 2;
 #
 # Partition by key list, wrong result type
 #
---error ER_PARTITION_FUNC_NOT_ALLOWED_ERROR
+--error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
 CREATE TABLE t1 (
 a int not null,
 b int not null,
@@ -109,7 +109,7 @@ partitions 3
 #
 # Partition by hash, invalid result type
 #
---error ER_PARTITION_FUNC_NOT_ALLOWED_ERROR
+--error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
 CREATE TABLE t1 (
 a int not null,
 b int not null,
@@ -533,7 +533,7 @@ partitions 2
 #
 # Partition by range, wrong result type of partition function
 #
---error ER_PARTITION_FUNC_NOT_ALLOWED_ERROR
+--error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
 CREATE TABLE t1 (
 a int not null,
 b int not null,
@@ -769,10 +769,11 @@ partition by range (a)
 #
 # Bug 18198 Partitions: Verify that erroneus partition functions doesn't work
 #
+-- error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
 create table t1 (v varchar(12))
 partition by range (ascii(v))
 (partition p0 values less than (10));
-drop table t1;
+#drop table t1;
 
 -- error 1064
 create table t1 (a int)
@@ -790,7 +791,7 @@ partition by hash (extract(hour from convert_tz(a, '+00:00', '+00:00')));
 create table t1 (a int)
 partition by range (a + (select count(*) from t1))
 (partition p1 values less than (1));
--- error ER_PARTITION_FUNC_NOT_ALLOWED_ERROR
+-- error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
 create table t1 (a char(10))
 partition by hash (extractvalue(a,'a'));
 

mysql-test/t/partition_hash.test

@@ -9,18 +9,6 @@
 drop table if exists t1;
 --enable_warnings
 
-#
-# BUG 18198: Partition functions handling
-#
-create table t1 (a varchar(10) charset latin1 collate latin1_bin)
-partition by hash(length(a))
-partitions 10;
-insert into t1 values (''),(' '),('a'),('a '),('a  ');
-explain partitions select * from t1 where a='a ';
-explain partitions select * from t1 where a='a';
-explain partitions select * from t1 where a='a ' OR a='a';
-drop table t1;
-
 #
 # More partition pruning tests, especially on interval walking
 #

mysql-test/t/partition_list.test

@@ -179,4 +179,8 @@ insert into t1 values (null);
 select * from t1;
 drop table t1;
 
+--error ER_PARTITION_FUNCTION_IS_NOT_ALLOWED
+create table t1 (a char(1))
+partition by list (ascii(ucase(a)))
+(partition p1 values in (2));
 

mysql-test/t/partition_mgm.test

@@ -20,7 +20,7 @@ subpartition sp01, subpartition sp02));
 drop table t1;
  
 CREATE TABLE t1 (f_date DATE, f_varchar VARCHAR(30))
-PARTITION BY HASH(CAST(YEAR(f_date) AS SIGNED INTEGER)) PARTITIONS 2;
+PARTITION BY HASH(YEAR(f_date)) PARTITIONS 2;
 SHOW CREATE TABLE t1;
 
 --replace_result $MYSQLTEST_VARDIR "hello"

mysql-test/t/partition_pruning.test

@@ -538,18 +538,17 @@ select * from t1 where f_int1 between 5 and 15 order by f_int1;
 drop table t1;
 
 #  part2: bug in pruning code
-create table t1 (a char(10) binary)
-partition by list(length(a))
- (partition p1 values in (1),
-  partition p2 values in (2),
-  partition p3 values in (3),
-  partition p4 values in (4),
-  partition p5 values in (5)
-);
-insert into t1 values ('a'),('bb'),('ccc'),('dddd'),('eeEee');
-select * from t1 where a>='a' and a <= 'dddd';
-explain partitions select * from t1 where a>='a' and a <= 'dddd';
-drop table t1;
+#create table t1 (a char(10) binary)
+#partition by list(ascii(a))
+# (partition p1 values in (ascii('a')),
+#  partition p2 values in (ascii('b')),
+#  partition p3 values in (ascii('c')),
+#  partition p4 values in (ascii('d')),
+#  partition p5 values in (ascii('e')));
+#insert into t1 values ('a'),('bb'),('ccc'),('dddd'),('eeEee');
+#select * from t1 where a>='a' and a <= 'dddd';
+#explain partitions select * from t1 where a>='a' and a <= 'dddd';
+#drop table t1;
 
 # BUG#18659: Assertion failure when subpartitioning is used and partition is
 # "IS NULL"
@@ -692,20 +691,47 @@ explain partitions select * from t1 where a = 18446744073709551000;
 explain partitions select * from t1 where a = 18446744073709551613;
 explain partitions select * from t1 where a = 18446744073709551614;
 drop table t1;
-
-create table t1 (a int) 
-  partition by range((a & 0xFF) << 56) (
-  partition p0 values less than (0x40 << 56),
-  partition p1 values less than (0x80 << 56),
-  partition p2 values less than (0xFF << 56)
+#
+# Test all variants of usage for interval_via_mapping
+# and interval_via_walking
+#
+# t1 will use interval_via_mapping since it uses a
+# monotonic function, whereas t2 will use
+# interval_via_walking since the intervals are short
+# and the function isn't monotonic (it is, but it isn't
+# discovered in this version).
+#
+  create table t1 (a int)
+  partition by range(a) (
+  partition p0 values less than (64),
+  partition p1 values less than (128),
+  partition p2 values less than (255)
 );
 
-insert into t1 values (0x20), (0x20), (0x41), (0x41), (0xFE), (0xFE); 
+create table t2 (a int)
+  partition by range(a+0) (
+  partition p0 values less than (64),
+  partition p1 values less than (128),
+  partition p2 values less than (255)
+);
+  
+insert into t1 values (0x20), (0x20), (0x41), (0x41), (0xFE), (0xFE);
+insert into t2 values (0x20), (0x20), (0x41), (0x41), (0xFE), (0xFE);
 explain partitions select * from t1 where a=0;
+explain partitions select * from t2 where a=0;
 explain partitions select * from t1 where a=0xFE;
-explain partitions select * from t1 where a>0xFE and a<= 0xFF;
+explain partitions select * from t2 where a=0xFE;
+explain partitions select * from t1 where a > 0xFE AND a <= 0xFF;
+explain partitions select * from t2 where a > 0xFE AND a <= 0xFF;
+explain partitions select * from t1 where a >= 0xFE AND a <= 0xFF;
+explain partitions select * from t2 where a >= 0xFE AND a <= 0xFF;
+explain partitions select * from t1 where a < 64 AND a >= 63;
+explain partitions select * from t2 where a < 64 AND a >= 63;
+explain partitions select * from t1 where a <= 64 AND a >= 63;
+explain partitions select * from t2 where a <= 64 AND a >= 63;
 drop table t1;
-
+drop table t2;
+  
 create table t1(a bigint unsigned not null) partition by range(a+0) (
   partition p1 values less than (10),
   partition p2 values less than (20),

mysql-test/t/partition_range.test

@@ -12,45 +12,45 @@ drop table if exists t1;
 #
 # BUG 18198: Various tests for partition functions
 #
-create table t1 (a varchar(10) charset latin1 collate latin1_bin, b int)
-partition by range (length(a) * b)
-(partition p0 values less than (2), partition p1 values less than (400));
-insert into t1 values ('a ', 2),('a',3);
-drop table t1;
-
-create table t1 (a varchar(10) charset latin1 collate latin1_bin, b int)
-partition by range (b* length(a) * b)
-(partition p0 values less than (2), partition p1 values less than (400));
-insert into t1 values ('a ', 2),('a',3);
-drop table t1;
-
-create table t1 (a varchar(10) charset latin1 collate latin1_bin,
-                 b varchar(10) charset latin1 collate latin1_bin)
-partition by range (length(b) * length(a))
-(partition p0 values less than (2), partition p1 values less than (400));
-insert into t1 values ('a ', 'b  '),('a','b');
-drop table t1;
-
-create table t1 (a varchar(10) charset latin1 collate latin1_bin,
-                 b varchar(10) charset latin1 collate latin1_bin)
-partition by range (length(a) * length(b))
-(partition p0 values less than (2), partition p1 values less than (400));
-insert into t1 values ('a ', 'b  '),('a','b');
-drop table t1;
-
-create table t1 (a varchar(10) charset latin1 collate latin1_bin,
-                 b varchar(10) charset latin1 collate latin1_bin, c int)
-partition by range (length(a) * c)
-(partition p0 values less than (2), partition p1 values less than (400));
-insert into t1 values ('a ', 'b  ', 2),('a','b', 3);
-drop table t1;
-
-create table t1 (a varchar(10) charset latin1 collate latin1_bin,
-                 b varchar(10) charset latin1 collate latin1_bin, c int)
-partition by range (c * length(a))
-(partition p0 values less than (2), partition p1 values less than (400));
-insert into t1 values ('a ', 'b  ', 2),('a','b', 3);
-drop table t1;
+#create table t1 (a varchar(10) charset latin1 collate latin1_bin, b int)
+#partition by range (ascii(a) * b)
+#(partition p0 values less than (2), partition p1 values less than (4000));
+#insert into t1 values ('a ', 2),('a',3);
+#drop table t1;
+
+#create table t1 (a varchar(10) charset latin1 collate latin1_bin, b int)
+#partition by range (b* ascii(a) * b)
+#(partition p0 values less than (2), partition p1 values less than (4000));
+#insert into t1 values ('a ', 2),('a',3);
+#drop table t1;
+
+#create table t1 (a varchar(10) charset latin1 collate latin1_bin,
+#                 b varchar(10) charset latin1 collate latin1_bin)
+#partition by range (ascii(b) * ascii(a))
+#(partition p0 values less than (2), partition p1 values less than (40000));
+#insert into t1 values ('a ', 'b  '),('a','b');
+#drop table t1;
+
+#create table t1 (a varchar(10) charset latin1 collate latin1_bin,
+#                 b varchar(10) charset latin1 collate latin1_bin)
+#partition by range (ascii(a) * ascii(b))
+#(partition p0 values less than (2), partition p1 values less than (40000));
+#insert into t1 values ('a ', 'b  '),('a','b');
+#drop table t1;
+
+#create table t1 (a varchar(10) charset latin1 collate latin1_bin,
+#                 b varchar(10) charset latin1 collate latin1_bin, c int)
+#partition by range (ascii(a) * c)
+#(partition p0 values less than (2), partition p1 values less than (4000));
+#insert into t1 values ('a ', 'b  ', 2),('a','b', 3);
+#drop table t1;
+
+#create table t1 (a varchar(10) charset latin1 collate latin1_bin,
+#                 b varchar(10) charset latin1 collate latin1_bin, c int)
+#partition by range (c * ascii(a))
+#(partition p0 values less than (2), partition p1 values less than (4000));
+#insert into t1 values ('a ', 'b  ', 2),('a','b', 3);
+#drop table t1;
 
 #
 # More checks for partition pruning
@@ -733,29 +733,27 @@ DROP TABLE t1;
 #
 # Bug 18198: Try with a couple of cases using VARCHAR fields in
 #            partition function.
-create table t1 (a varchar(20))
-partition by range (crc32(md5(a)))
-(partition p0 values less than (100),
- partition p1 values less than maxvalue);
-
-insert into t1 values ("12345678901234567890");
-insert into t1 values ("A2345678901234567890");
-insert into t1 values ("B2345678901234567890");
-insert into t1 values ("1234567890123456789");
-insert into t1 values ("1234567890123456");
-select * from t1;
-explain partitions select * from t1 where a = "12345678901234567890";
-explain partitions select * from t1 where a = "12345678901234567890" OR
-                                          a = "A2345678901234567890" OR
-                                          a = "B2345678901234567890" OR
-                                          a = "C2345678901234567890";
-explain partitions select * from t1 where a = "01234567890123456";
-select * from t1 where a = "01234567890123456";
-select * from t1 where a = "12345678901234567890" OR
-                       a = "A2345678901234567890" OR
-                       a = "B2345678901234567890" OR
-                       a = "C2345678901234567890";
-select * from t1 where a = "12345678901234567890";
-
-
-drop table t1;
+#create table t1 (a varchar(20))
+#partition by range (ascii(a))
+#(partition p0 values less than (100),
+# partition p1 values less than maxvalue);
+
+#insert into t1 values ("12345678901234567890");
+#insert into t1 values ("A2345678901234567890");
+#insert into t1 values ("B2345678901234567890");
+#insert into t1 values ("1234567890123456789");
+#insert into t1 values ("1234567890123456");
+#select * from t1;
+#explain partitions select * from t1 where a = "12345678901234567890";
+#explain partitions select * from t1 where a = "12345678901234567890" OR
+#                                          a = "A2345678901234567890" OR
+#                                          a = "B2345678901234567890" OR
+#                                          a = "C2345678901234567890";
+#explain partitions select * from t1 where a = "01234567890123456";
+#select * from t1 where a = "01234567890123456";
+#select * from t1 where a = "12345678901234567890" OR
+#                       a = "A2345678901234567890" OR
+#                       a = "B2345678901234567890" OR
+#                       a = "C2345678901234567890";
+#select * from t1 where a = "12345678901234567890";
+#drop table t1;

sql/filesort.cc

@@ -1128,6 +1128,7 @@ int merge_buffers(SORTPARAM *param, IO_CACHE *from_file,
   BUFFPEK *buffpek;
   QUEUE queue;
   qsort2_cmp cmp;
+  void *first_cmp_arg;
   volatile THD::killed_state *killed= &current_thd->killed;
   THD::killed_state not_killable;
   DBUG_ENTER("merge_buffers");
@@ -1152,9 +1153,18 @@ int merge_buffers(SORTPARAM *param, IO_CACHE *from_file,
   /* The following will fire if there is not enough space in sort_buffer */
   DBUG_ASSERT(maxcount!=0);
   
+  if (param->unique_buff)
+  {
+    cmp= param->compare;
+    first_cmp_arg= (void *) &param->cmp_context;
+  }
+  else
+  {
+    cmp= get_ptr_compare(sort_length);
+    first_cmp_arg= (void*) &sort_length;
+  }
   if (init_queue(&queue, (uint) (Tb-Fb)+1, offsetof(BUFFPEK,key), 0,
-                 (queue_compare) (cmp= get_ptr_compare(sort_length)),
-                 (void*) &sort_length))
+                 (queue_compare) cmp, first_cmp_arg))
     DBUG_RETURN(1);                                /* purecov: inspected */
   for (buffpek= Fb ; buffpek <= Tb ; buffpek++)
   {
@@ -1207,7 +1217,7 @@ int merge_buffers(SORTPARAM *param, IO_CACHE *from_file,
       buffpek= (BUFFPEK*) queue_top(&queue);
       if (cmp)                                        // Remove duplicates
       {
-        if (!(*cmp)(&sort_length, &(param->unique_buff),
+        if (!(*cmp)(first_cmp_arg, &(param->unique_buff),
                     (uchar**) &buffpek->key))
               goto skip_duplicate;
             memcpy(param->unique_buff, (uchar*) buffpek->key, rec_length);
@@ -1259,7 +1269,7 @@ int merge_buffers(SORTPARAM *param, IO_CACHE *from_file,
   */
   if (cmp)
   {
-    if (!(*cmp)(&sort_length, &(param->unique_buff), (uchar**) &buffpek->key))
+    if (!(*cmp)(first_cmp_arg, &(param->unique_buff), (uchar**) &buffpek->key))
     {
       buffpek->key+= rec_length;         // Remove duplicate
       --buffpek->mem_count;

sql/item.h

@@ -843,8 +843,7 @@ public:
     german character for double s is equal to 2 s.
 
     The default is that an item is not allowed
-    in a partition function. However all mathematical functions, string
-    manipulation functions, date functions are allowed. Allowed functions
+    in a partition function. Allowed functions
     can never depend on server version, they cannot depend on anything
     related to the environment. They can also only depend on a set of
     fields in the table itself. They cannot depend on other tables and
@@ -1633,6 +1632,7 @@ public:
   uint decimal_precision() const
   { return (uint)(max_length - test(value < 0)); }
   bool eq(const Item *, bool binary_cmp) const;
+  bool check_partition_func_processor(uchar *bool_arg) { return FALSE;}
 };
 
 
@@ -1650,6 +1650,7 @@ public:
   void print(String *str);
   Item_num *neg ();
   uint decimal_precision() const { return max_length; }
+  bool check_partition_func_processor(uchar *bool_arg) { return FALSE;}
 };
 
 
@@ -1692,6 +1693,7 @@ public:
   uint decimal_precision() const { return decimal_value.precision(); }
   bool eq(const Item *, bool binary_cmp) const;
   void set_decimal_value(my_decimal *value_par);
+  bool check_partition_func_processor(uchar *bool_arg) { return FALSE;}
 };
 
 
@@ -1752,7 +1754,6 @@ public:
   {}
   void print(String *str) { str->append(func_name); }
   Item *safe_charset_converter(CHARSET_INFO *tocs);
-  bool check_partition_func_processor(uchar *int_arg) {return TRUE;}
 };
 
 
@@ -1861,7 +1862,6 @@ public:
                                   CHARSET_INFO *cs= NULL):
     Item_string(name, length, cs)
   {}
-  bool check_partition_func_processor(uchar *int_arg) {return TRUE;}
 };
 
 
@@ -1915,7 +1915,6 @@ public:
     unsigned_flag=1;
   }
   enum_field_types field_type() const { return int_field_type; }
-  bool check_partition_func_processor(uchar *int_arg) {return TRUE;}
 };
 
 
@@ -2237,7 +2236,6 @@ public:
   }
   Item *clone_item();
   virtual Item *real_item() { return ref; }
-  bool check_partition_func_processor(uchar *int_arg) {return TRUE;}
 };
 
 #ifdef MYSQL_SERVER

sql/item_cmpfunc.h

@@ -355,7 +355,6 @@ public:
   }
   Item *neg_transformer(THD *thd);
   virtual Item *negated_item();
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
   bool subst_argument_checker(uchar **arg) { return TRUE; }
 };
 
@@ -367,7 +366,6 @@ public:
   enum Functype functype() const { return NOT_FUNC; }
   const char *func_name() const { return "not"; }
   Item *neg_transformer(THD *thd);
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
   void print(String *str);
 };
 
@@ -598,7 +596,6 @@ public:
   bool is_bool_func() { return 1; }
   CHARSET_INFO *compare_collation() { return cmp_collation.collation; }
   uint decimal_precision() const { return 1; }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 
@@ -610,7 +607,6 @@ public:
   optimize_type select_optimize() const { return OPTIMIZE_NONE; }
   const char *func_name() const { return "strcmp"; }
   void print(String *str) { Item_func::print(str); }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 
@@ -673,7 +669,6 @@ public:
   const char *func_name() const { return "ifnull"; }
   Field *tmp_table_field(TABLE *table);
   uint decimal_precision() const;
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 
@@ -714,7 +709,6 @@ public:
   void print(String *str) { Item_func::print(str); }
   table_map not_null_tables() const { return 0; }
   bool is_null();
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 /* Functions to handle the optimized IN */
@@ -1141,7 +1135,6 @@ public:
   void print(String *str);
   Item *find_item(String *str);
   CHARSET_INFO *compare_collation() { return cmp_collation.collation; }
-  bool check_partition_func_processor(uchar *bool_arg) { return FALSE;}
   void cleanup();
 };
 
@@ -1211,7 +1204,6 @@ public:
   bool nulls_in_row();
   bool is_bool_func() { return 1; }
   CHARSET_INFO *compare_collation() { return cmp_collation.collation; }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 class cmp_item_row :public cmp_item
@@ -1283,7 +1275,6 @@ public:
   optimize_type select_optimize() const { return OPTIMIZE_NULL; }
   Item *neg_transformer(THD *thd);
   CHARSET_INFO *compare_collation() { return args[0]->collation.collation; }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 /* Functions used by HAVING for rewriting IN subquery */
@@ -1310,7 +1301,6 @@ public:
   */
   table_map used_tables() const
     { return used_tables_cache | RAND_TABLE_BIT; }
-  bool check_partition_func_processor(uchar *int_arg) {return TRUE;}
 };
 
 
@@ -1333,7 +1323,6 @@ public:
   void print(String *str);
   CHARSET_INFO *compare_collation() { return args[0]->collation.collation; }
   void top_level_item() { abort_on_null=1; }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 
@@ -1372,7 +1361,6 @@ public:
   const char *func_name() const { return "like"; }
   bool fix_fields(THD *thd, Item **ref);
   void cleanup();
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 #ifdef USE_REGEX
@@ -1395,7 +1383,6 @@ public:
   const char *func_name() const { return "regexp"; }
   void print(String *str) { print_op(str); }
   CHARSET_INFO *compare_collation() { return cmp_collation.collation; }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 #else
@@ -1452,7 +1439,6 @@ public:
   Item *transform(Item_transformer transformer, uchar *arg);
   void traverse_cond(Cond_traverser, void *arg, traverse_order order);
   void neg_arguments(THD *thd);
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
   bool subst_argument_checker(uchar **arg) { return TRUE; }
   Item *compile(Item_analyzer analyzer, uchar **arg_p,
                 Item_transformer transformer, uchar *arg_t);

sql/item_func.h

@@ -253,7 +253,6 @@ public:
   void fix_num_length_and_dec();
   void find_num_type();
   String *str_op(String *str) { DBUG_ASSERT(0); return 0; }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 
@@ -311,7 +310,6 @@ public:
   { max_length=args[0]->max_length; unsigned_flag=0; }
   void print(String *str);
   uint decimal_precision() const { return args[0]->decimal_precision(); }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 
@@ -345,7 +343,6 @@ public:
   void fix_length_and_dec() {};
   const char *func_name() const { return "decimal_typecast"; }
   void print(String *);
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 
@@ -442,6 +439,7 @@ public:
   void fix_length_and_dec();
   void fix_num_length_and_dec();
   uint decimal_precision() const { return args[0]->decimal_precision(); }
+  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 
@@ -454,6 +452,7 @@ public:
   my_decimal *decimal_op(my_decimal *);
   const char *func_name() const { return "abs"; }
   void fix_length_and_dec();
+  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 // A class to handle logarithmic and trigonometric functions
@@ -488,7 +487,6 @@ public:
   Item_func_exp(Item *a) :Item_dec_func(a) {}
   double val_real();
   const char *func_name() const { return "exp"; }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 
@@ -498,7 +496,6 @@ public:
   Item_func_ln(Item *a) :Item_dec_func(a) {}
   double val_real();
   const char *func_name() const { return "ln"; }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 
@@ -509,7 +506,6 @@ public:
   Item_func_log(Item *a,Item *b) :Item_dec_func(a,b) {}
   double val_real();
   const char *func_name() const { return "log"; }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 
@@ -519,7 +515,6 @@ public:
   Item_func_log2(Item *a) :Item_dec_func(a) {}
   double val_real();
   const char *func_name() const { return "log2"; }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 
@@ -529,7 +524,6 @@ public:
   Item_func_log10(Item *a) :Item_dec_func(a) {}
   double val_real();
   const char *func_name() const { return "log10"; }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 
@@ -539,7 +533,6 @@ public:
   Item_func_sqrt(Item *a) :Item_dec_func(a) {}
   double val_real();
   const char *func_name() const { return "sqrt"; }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 
@@ -549,7 +542,6 @@ public:
   Item_func_pow(Item *a,Item *b) :Item_dec_func(a,b) {}
   double val_real();
   const char *func_name() const { return "pow"; }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 
@@ -559,7 +551,6 @@ public:
   Item_func_acos(Item *a) :Item_dec_func(a) {}
   double val_real();
   const char *func_name() const { return "acos"; }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 class Item_func_asin :public Item_dec_func
@@ -568,7 +559,6 @@ public:
   Item_func_asin(Item *a) :Item_dec_func(a) {}
   double val_real();
   const char *func_name() const { return "asin"; }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 class Item_func_atan :public Item_dec_func
@@ -578,7 +568,6 @@ public:
   Item_func_atan(Item *a,Item *b) :Item_dec_func(a,b) {}
   double val_real();
   const char *func_name() const { return "atan"; }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 class Item_func_cos :public Item_dec_func
@@ -587,7 +576,6 @@ public:
   Item_func_cos(Item *a) :Item_dec_func(a) {}
   double val_real();
   const char *func_name() const { return "cos"; }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 class Item_func_sin :public Item_dec_func
@@ -596,7 +584,6 @@ public:
   Item_func_sin(Item *a) :Item_dec_func(a) {}
   double val_real();
   const char *func_name() const { return "sin"; }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 class Item_func_tan :public Item_dec_func
@@ -605,7 +592,6 @@ public:
   Item_func_tan(Item *a) :Item_dec_func(a) {}
   double val_real();
   const char *func_name() const { return "tan"; }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 class Item_func_integer :public Item_int_func
@@ -633,6 +619,7 @@ public:
   longlong int_op();
   double real_op();
   my_decimal *decimal_op(my_decimal *);
+  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 
@@ -644,6 +631,7 @@ public:
   longlong int_op();
   double real_op();
   my_decimal *decimal_op(my_decimal *);
+  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 /* This handles round and truncate */
@@ -684,7 +672,6 @@ public:
   Item_func_sign(Item *a) :Item_int_func(a) {}
   const char *func_name() const { return "sign"; }
   longlong val_int();
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 
@@ -699,7 +686,6 @@ public:
   const char *func_name() const { return name; }
   void fix_length_and_dec()
   { decimals= NOT_FIXED_DEC; max_length= float_length(decimals); }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 
@@ -725,7 +711,6 @@ public:
   void fix_length_and_dec();
   enum Item_result result_type () const { return cmp_type; }
   bool result_as_longlong() { return compare_as_dates; };
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
   uint cmp_datetimes(ulonglong *value);
 };
 
@@ -781,7 +766,6 @@ public:
   longlong val_int();
   const char *func_name() const { return "length"; }
   void fix_length_and_dec() { max_length=10; }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 class Item_func_bit_length :public Item_func_length
@@ -801,7 +785,6 @@ public:
   longlong val_int();
   const char *func_name() const { return "char_length"; }
   void fix_length_and_dec() { max_length=10; }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 class Item_func_coercibility :public Item_int_func
@@ -825,7 +808,6 @@ public:
   longlong val_int();
   void fix_length_and_dec();
   void print(String *str);
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 
@@ -850,7 +832,6 @@ public:
   longlong val_int();
   const char *func_name() const { return "ascii"; }
   void fix_length_and_dec() { max_length=3; }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 class Item_func_ord :public Item_int_func
@@ -860,7 +841,6 @@ public:
   Item_func_ord(Item *a) :Item_int_func(a) {}
   longlong val_int();
   const char *func_name() const { return "ord"; }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 class Item_func_find_in_set :public Item_int_func
@@ -874,7 +854,6 @@ public:
   longlong val_int();
   const char *func_name() const { return "find_in_set"; }
   void fix_length_and_dec();
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 /* Base class for all bit functions: '~', '|', '^', '&', '>>', '<<' */
@@ -886,7 +865,6 @@ public:
   Item_func_bit(Item *a) :Item_int_func(a) {}
   void fix_length_and_dec() { unsigned_flag= 1; }
   void print(String *str) { print_op(str); }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 class Item_func_bit_or :public Item_func_bit
@@ -912,7 +890,6 @@ public:
   longlong val_int();
   const char *func_name() const { return "bit_count"; }
   void fix_length_and_dec() { max_length=2; }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 class Item_func_shift_left :public Item_func_bit
@@ -1363,7 +1340,6 @@ public:
   longlong val_int();
   const char *func_name() const { return "inet_aton"; }
   void fix_length_and_dec() { decimals= 0; max_length= 21; maybe_null= 1; unsigned_flag= 1;}
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 

sql/item_strfunc.h

@@ -50,7 +50,6 @@ public:
   String *val_str(String *);
   void fix_length_and_dec();
   const char *func_name() const { return "md5"; }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 
@@ -94,7 +93,6 @@ public:
   String *val_str(String *);
   void fix_length_and_dec();
   const char *func_name() const { return "concat"; }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 class Item_func_concat_ws :public Item_str_func
@@ -116,7 +114,6 @@ public:
   String *val_str(String *);
   void fix_length_and_dec();
   const char *func_name() const { return "reverse"; }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 
@@ -154,7 +151,6 @@ protected:
 public:
   Item_str_conv(Item *item) :Item_str_func(item) {}
   String *val_str(String *);
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 
@@ -455,7 +451,6 @@ public:
   String *val_str(String *);
   void fix_length_and_dec();
   const char *func_name() const { return "soundex"; }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 
@@ -549,7 +544,6 @@ public:
   String *val_str(String *);
   void fix_length_and_dec();
   const char *func_name() const { return "rpad"; }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 
@@ -562,7 +556,6 @@ public:
   String *val_str(String *);
   void fix_length_and_dec();
   const char *func_name() const { return "lpad"; }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 
@@ -577,7 +570,6 @@ public:
     collation.set(default_charset());
     max_length= 64;
   }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 
@@ -594,7 +586,6 @@ public:
     decimals=0;
     max_length=args[0]->max_length*2*collation.collation->mbmaxlen;
   }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 class Item_func_unhex :public Item_str_func
@@ -614,7 +605,6 @@ public:
     decimals=0;
     max_length=(1+args[0]->max_length)/2;
   }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 
@@ -638,7 +628,6 @@ public:
   }
   void print(String *str);
   const char *func_name() const { return "cast_as_binary"; }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 
@@ -678,7 +667,6 @@ public:
   String* val_str(String* str);
   const char *func_name() const { return "inet_ntoa"; }
   void fix_length_and_dec() { decimals = 0; max_length=3*8+7; }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 class Item_func_quote :public Item_str_func
@@ -693,7 +681,6 @@ public:
     collation.set(args[0]->collation);
     max_length= args[0]->max_length * 2 + 2;
   }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 class Item_func_conv_charset :public Item_str_func
@@ -794,7 +781,6 @@ public:
   const char *func_name() const { return "crc32"; }
   void fix_length_and_dec() { max_length=10; }
   longlong val_int();
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 class Item_func_uncompressed_length : public Item_int_func

sql/item_timefunc.h

@@ -38,7 +38,6 @@ public:
   { 
     max_length=6*MY_CHARSET_BIN_MB_MAXLEN;
   }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 
@@ -53,7 +52,6 @@ public:
     decimals=0;
     max_length=6*MY_CHARSET_BIN_MB_MAXLEN;
   }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 
@@ -129,6 +127,7 @@ public:
     max_length=10*my_charset_bin.mbmaxlen;
     maybe_null=1; 
   }
+  bool check_partition_func_processor(uchar *int_arg) {return TRUE;}
 };
 
 
@@ -224,7 +223,6 @@ public:
     max_length=2*MY_CHARSET_BIN_MB_MAXLEN;
     maybe_null=1;
   }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 class Item_func_yearweek :public Item_int_func
@@ -303,6 +301,7 @@ class Item_func_dayname :public Item_func_weekday
     max_length=9*MY_CHARSET_BIN_MB_MAXLEN;
     maybe_null=1; 
   }
+  bool check_partition_func_processor(uchar *int_arg) {return TRUE;}
 };
 
 
@@ -319,7 +318,6 @@ public:
     decimals=0;
     max_length=10*MY_CHARSET_BIN_MB_MAXLEN;
   }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 
@@ -603,7 +601,6 @@ public:
   void fix_length_and_dec();
   uint format_length(const String *format);
   bool eq(const Item *item, bool binary_cmp) const;
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 
@@ -617,7 +614,6 @@ class Item_func_from_unixtime :public Item_date_func
   const char *func_name() const { return "from_unixtime"; }
   void fix_length_and_dec();
   bool get_date(MYSQL_TIME *res, uint fuzzy_date);
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 
@@ -676,7 +672,6 @@ public:
   }
   const char *func_name() const { return "sec_to_time"; }
   bool result_as_longlong() { return TRUE; }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 
@@ -698,7 +693,6 @@ public:
   bool get_date(MYSQL_TIME *res, uint fuzzy_date);
   bool eq(const Item *item, bool binary_cmp) const;
   void print(String *str);
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 
@@ -753,7 +747,6 @@ public:
     max_length=args[0]->max_length;
     maybe_null= 1;
   }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 
@@ -773,7 +766,6 @@ public:
   String *val_str(String *a);
   void fix_length_and_dec();
   void print(String *str);
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 
@@ -884,7 +876,6 @@ public:
     max_length=MAX_DATE_WIDTH*MY_CHARSET_BIN_MB_MAXLEN;
   }
   longlong val_int();
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 
@@ -907,7 +898,6 @@ public:
   }
   void print(String *str);
   const char *func_name() const { return "add_time"; }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
   double val_real() { return val_real_from_decimal(); }
   my_decimal *val_decimal(my_decimal *decimal_value)
   {
@@ -949,7 +939,6 @@ public:
     :Item_str_timefunc(a, b ,c) {}
   String *val_str(String *str);
   const char *func_name() const { return "maketime"; }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 class Item_func_microsecond :public Item_int_func
@@ -981,7 +970,6 @@ public:
     maybe_null=1;
   }
   void print(String *str);
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 
@@ -1028,7 +1016,6 @@ public:
   {
     return tmp_table_field_from_field_type(table, 1);
   }
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 

sql/item_xmlfunc.h

@@ -41,7 +41,6 @@ public:
   Item_func_xml_extractvalue(Item *a,Item *b) :Item_xml_str_func(a,b) {}
   const char *func_name() const { return "extractvalue"; }
   String *val_str(String *);
-  bool check_partition_func_processor(uchar *int_arg) {return FALSE;}
 };
 
 

sql/log.cc

@@ -1445,7 +1445,7 @@ static int binlog_close_connection(handlerton *hton, THD *thd)
 {
   binlog_trx_data *const trx_data=
     (binlog_trx_data*) thd->ha_data[binlog_hton->slot];
-  DBUG_ASSERT(mysql_bin_log.is_open() && trx_data->empty());
+  DBUG_ASSERT(trx_data->empty());
   thd->ha_data[binlog_hton->slot]= 0;
   trx_data->~binlog_trx_data();
   my_free((uchar*)trx_data, MYF(0));
@@ -1570,7 +1570,6 @@ static int binlog_commit(handlerton *hton, THD *thd, bool all)
   DBUG_ENTER("binlog_commit");
   binlog_trx_data *const trx_data=
     (binlog_trx_data*) thd->ha_data[binlog_hton->slot];
-  DBUG_ASSERT(mysql_bin_log.is_open());
 
   if (trx_data->empty())
   {
@@ -1598,7 +1597,6 @@ static int binlog_rollback(handlerton *hton, THD *thd, bool all)
   int error=0;
   binlog_trx_data *const trx_data=
     (binlog_trx_data*) thd->ha_data[binlog_hton->slot];
-  DBUG_ASSERT(mysql_bin_log.is_open());
 
   if (trx_data->empty()) {
     trx_data->reset();
@@ -1659,7 +1657,6 @@ static int binlog_savepoint_set(handlerton *hton, THD *thd, void *sv)
 static int binlog_savepoint_rollback(handlerton *hton, THD *thd, void *sv)
 {
   DBUG_ENTER("binlog_savepoint_rollback");
-  DBUG_ASSERT(mysql_bin_log.is_open());
 
   /*
     Write ROLLBACK TO SAVEPOINT to the binlog cache if we have updated some

sql/partition_info.cc

@@ -905,7 +905,6 @@ bool partition_info::set_up_charset_field_preps()
   Field *field, **ptr;
   uchar **char_ptrs;
   unsigned i;
-  bool found;
   size_t size;
   uint tot_fields= 0;
   uint tot_part_fields= 0;
@@ -918,7 +917,6 @@ bool partition_info::set_up_charset_field_preps()
   {
     ptr= part_field_array;
     /* Set up arrays and buffers for those fields */
-    i= 0;
     while ((field= *(ptr++)))
     {
       if (field_is_partition_charset(field))
@@ -954,7 +952,7 @@ bool partition_info::set_up_charset_field_preps()
     }
     part_charset_field_array[i]= NULL;
   }
-  if (is_sub_partitioned() && list_of_subpart_fields &&
+  if (is_sub_partitioned() && !list_of_subpart_fields &&
       check_part_func_fields(subpart_field_array, FALSE))
   {
     /* Set up arrays and buffers for those fields */
@@ -962,7 +960,10 @@ bool partition_info::set_up_charset_field_preps()
     while ((field= *(ptr++)))
     {
       if (field_is_partition_charset(field))
+      {
         tot_subpart_fields++;
+        tot_fields++;
+      }
     }
     size= tot_subpart_fields * sizeof(char*);
     if (!(char_ptrs= (uchar**) sql_calloc(size)))
@@ -975,10 +976,10 @@ bool partition_info::set_up_charset_field_preps()
     if (!(char_ptrs= (uchar**) sql_alloc(size)))
       goto error;
     subpart_charset_field_array= (Field**)char_ptrs;
+    ptr= subpart_field_array;
     i= 0;
     while ((field= *(ptr++)))
     {
-      unsigned j= 0;
       CHARSET_INFO *cs;
       uchar *field_buf;
       LINT_INIT(field_buf);
@@ -987,28 +988,16 @@ bool partition_info::set_up_charset_field_preps()
         continue;
       cs= ((Field_str*)field)->charset();
       size= field->pack_length();
-      found= FALSE;
-      for (j= 0; j < tot_part_fields; j++)
-      {
-        if (field == part_charset_field_array[i])
-          found= TRUE;
-      }
-      if (!found)
-      {
-        tot_fields++;
-        if (!(field_buf= (uchar*) sql_calloc(size)))
-          goto error;
-      }
+      if (!(field_buf= (uchar*) sql_calloc(size)))
+        goto error;
+      subpart_charset_field_array[i]= field;
       subpart_field_buffers[i++]= field_buf;
     }
-    if (!(char_ptrs= (uchar**) sql_calloc(size)))
-      goto error;
-    restore_subpart_field_ptrs= char_ptrs;
+    subpart_charset_field_array[i]= NULL;
   }
   if (tot_fields)
   {
-    uint j,k,l;
-
+    uint k;
     size= tot_fields*sizeof(char**);
     if (!(char_ptrs= (uchar**)sql_calloc(size)))
       goto error;
@@ -1026,11 +1015,12 @@ bool partition_info::set_up_charset_field_preps()
       full_part_field_buffers[i]= part_field_buffers[i];
     }
     k= tot_part_fields;
-    l= 0;
     for (i= 0; i < tot_subpart_fields; i++)
     {
+      uint j;
+      bool found= FALSE;
       field= subpart_charset_field_array[i];
-      found= FALSE;
+
       for (j= 0; j < tot_part_fields; j++)
       {
         if (field == part_charset_field_array[i])
@@ -1038,12 +1028,12 @@ bool partition_info::set_up_charset_field_preps()
       }
       if (!found)
       {
-        full_part_charset_field_array[l]= subpart_charset_field_array[k];
-        full_part_field_buffers[l]= subpart_field_buffers[k];
-        k++; l++;
+        full_part_charset_field_array[k]= subpart_charset_field_array[i];
+        full_part_field_buffers[k]= subpart_field_buffers[i];
+        k++;
       }
     }
-    full_part_charset_field_array[tot_fields]= NULL;
+    full_part_charset_field_array[k]= NULL;
   }
   DBUG_RETURN(FALSE);
 error:

sql/sql_class.cc

@@ -1445,6 +1445,7 @@ select_export::prepare(List<Item> &list, SELECT_LEX_UNIT *u)
   field_sep_char= (exchange->enclosed->length() ? (*exchange->enclosed)[0] :
 		   field_term_length ? (*exchange->field_term)[0] : INT_MAX);
   escape_char=	(exchange->escaped->length() ? (*exchange->escaped)[0] : -1);
+  is_ambiguous_field_sep= test(strchr(ESCAPE_CHARS, field_sep_char));
   line_sep_char= (exchange->line_term->length() ?
 		  (*exchange->line_term)[0] : INT_MAX);
   if (!field_term_length)
@@ -1585,7 +1586,9 @@ bool select_export::send_data(List<Item> &items)
                NEED_ESCAPING(pos[1])))
           {
 	    char tmp_buff[2];
-	    tmp_buff[0]= escape_char;
+            tmp_buff[0]= ((int) *pos == field_sep_char &&
+                          is_ambiguous_field_sep) ?
+                          field_sep_char : escape_char;
 	    tmp_buff[1]= *pos ? *pos : '0';
 	    if (my_b_write(&cache,(uchar*) start,(uint) (pos-start)) ||
 		my_b_write(&cache,(uchar*) tmp_buff,2))

sql/sql_class.h

@@ -1949,9 +1949,18 @@ public:
 };
 
 
+#define ESCAPE_CHARS "ntrb0ZN" // keep synchronous with READ_INFO::unescape
+
+
 class select_export :public select_to_file {
   uint field_term_length;
   int field_sep_char,escape_char,line_sep_char;
+  /*
+    The is_ambiguous_field_sep field is true if a value of the field_sep_char
+    field is one of the 'n', 't', 'r' etc characters
+    (see the READ_INFO::unescape method and the ESCAPE_CHARS constant value).
+  */
+  bool is_ambiguous_field_sep;
   bool fixed_row_size;
 public:
   select_export(sql_exchange *ex) :select_to_file(ex) {}

sql/sql_load.cc

@@ -851,6 +851,7 @@ continue_loop:;
 char
 READ_INFO::unescape(char chr)
 {
+  /* keep this switch synchornous with the ESCAPE_CHARS macro */
   switch(chr) {
   case 'n': return '\n';
   case 't': return '\t';

sql/sql_partition.cc

@@ -2869,6 +2869,8 @@ uint32 get_partition_id_range_for_endpoint(partition_info *part_info,
   }
   if (unsigned_flag)
     part_func_value-= 0x8000000000000000ULL;
+  if (left_endpoint && !include_endpoint)
+    part_func_value++;
   while (max_part_id > min_part_id)
   {
     loc_part_id= (max_part_id + min_part_id + 1) >> 1;
@@ -3294,7 +3296,9 @@ static uint32 get_sub_part_id_from_key(const TABLE *table,uchar *buf,
 
   key_restore(buf, (uchar*)key_spec->key, key_info, key_spec->length);
   if (likely(rec0 == buf))
+  {
     part_id= part_info->get_subpartition_id(part_info);
+  }
   else
   {
     Field **part_field_array= part_info->subpart_field_array;
@@ -3337,8 +3341,10 @@ bool get_part_id_from_key(const TABLE *table, uchar *buf, KEY *key_info,
 
   key_restore(buf, (uchar*)key_spec->key, key_info, key_spec->length);
   if (likely(rec0 == buf))
+  {
     result= part_info->get_part_partition_id(part_info, part_id,
                                              &func_value);
+  }
   else
   {
     Field **part_field_array= part_info->part_field_array;
@@ -3384,8 +3390,10 @@ void get_full_part_id_from_key(const TABLE *table, uchar *buf,
 
   key_restore(buf, (uchar*)key_spec->key, key_info, key_spec->length);
   if (likely(rec0 == buf))
+  {
     result= part_info->get_partition_id(part_info, &part_spec->start_part,
                                         &func_value);
+  }
   else
   {
     Field **part_field_array= part_info->full_part_field_array;

sql/sql_show.cc

@@ -2273,11 +2273,9 @@ bool uses_only_table_name_fields(Item *item, TABLE_LIST *table)
   if (item->type() == Item::FUNC_ITEM)
   {
     Item_func *item_func= (Item_func*)item;
-    Item **child;
-    Item **item_end= (item_func->arguments()) + item_func->argument_count();
-    for (child= item_func->arguments(); child != item_end; child++)
+    for (uint i=0; i<item_func->argument_count(); i++)
     {
-      if (!uses_only_table_name_fields(*child, table))
+      if (!uses_only_table_name_fields(item_func->arguments()[i], table))
         return 0;
     }
   }

sql/sql_sort.h

@@ -50,6 +50,12 @@ typedef struct st_buffpek {		/* Struktur om sorteringsbuffrarna */
   ulong max_keys;			/* Max keys in buffert */
 } BUFFPEK;
 
+struct BUFFPEK_COMPARE_CONTEXT
+{
+  qsort_cmp2 key_compare;
+  void *key_compare_arg;
+};
+
 typedef struct st_sort_param {
   uint rec_length;          /* Length of sorted records */
   uint sort_length;			/* Length of sorted columns */
@@ -65,6 +71,9 @@ typedef struct st_sort_param {
   uchar *unique_buff;
   bool not_killable;
   char* tmp_buffer;
+  /* The fields below are used only by Unique class */
+  qsort2_cmp compare;
+  BUFFPEK_COMPARE_CONTEXT cmp_context;
 } SORTPARAM;
 
 

sql/sql_yacc.yy

@@ -4107,8 +4107,7 @@ part_bit_expr:
             }
             Lex->part_info->curr_part_elem->has_null_value= TRUE;
           }
-          else if (part_expr->result_type() != INT_RESULT &&
-                   !part_expr->null_value)
+          else if (part_expr->result_type() != INT_RESULT)
           {
             my_parse_error(ER(ER_INCONSISTENT_TYPE_OF_FUNCTIONS_ERROR));
             MYSQL_YYABORT;

sql/uniques.cc

@@ -360,17 +360,12 @@ Unique::reset()
 }
 
 /*
-  The comparison function, passed to queue_init() in merge_walk() must
+  The comparison function, passed to queue_init() in merge_walk() and in
+  merge_buffers() when the latter is called from Uniques::get() must
   use comparison function of Uniques::tree, but compare members of struct
   BUFFPEK.
 */
 
-struct BUFFPEK_COMPARE_CONTEXT
-{
-  qsort_cmp2 key_compare;
-  void *key_compare_arg;
-};
-
 C_MODE_START
 
 static int buffpek_compare(void *arg, uchar *key_ptr1, uchar *key_ptr2)
@@ -629,6 +624,10 @@ bool Unique::get(TABLE *table)
   sort_param.unique_buff= sort_buffer+(sort_param.keys*
 				       sort_param.sort_length);
 
+  sort_param.compare= (qsort2_cmp) buffpek_compare;
+  sort_param.cmp_context.key_compare= tree.compare;
+  sort_param.cmp_context.key_compare_arg= tree.custom_arg;
+
   /* Merge the buffers to one file, removing duplicates */
   if (merge_many_buff(&sort_param,sort_buffer,file_ptr,&maxbuffer,&file))
     goto err;