Fixed LP bug #886145.

The bug happened because in some cases the function JOIN::exec
did not save the value of TABLE::pre_idx_push_select_cond in
TABLE::select->pre_idx_push_select_cond for the sort table.

Noticed and fixed a bug in the function make_cond_remainder
that builds the remainder condition after extraction of an index
pushdown condition from the where condition. The code
erroneously assumed that the function make_cond_for_table left
the value of ICP_COND_USES_INDEX_ONLY in sub-condition markers.
Adjusted many result files from the regression test suite
after this fix .

mysql-test/include/icp_tests.inc

@@ -697,3 +697,30 @@ SELECT * FROM t1
   ORDER BY a;
 
 DROP TABLE t1;
+
+--echo #
+--echo # Bug#886145: join with ICP + ORDER BY  
+--echo #
+
+CREATE TABLE t1 (b int NOT NULL, c int, a varchar(1024), PRIMARY KEY (b));
+INSERT INTO t1 VALUES (1,4,'Ill');
+
+CREATE TABLE t2 (a varchar(1024), KEY (a(512)));
+INSERT INTO t2 VALUES
+  ('Ill'), ('eckqzsflbzaffti'), ('w'), ('she'), ('gxbwypqtjzwywwer'), ('w');
+
+SET SESSION optimizer_switch='index_condition_pushdown=off';
+EXPLAIN
+SELECT t1.b, t1.c FROM t1, t2 WHERE t1.a = t2.a AND t1.b != 0 
+  HAVING t1.c != 5 ORDER BY t1.c;
+SELECT t1.b, t1.c FROM t1, t2 WHERE t1.a = t2.a AND t1.b != 0
+  HAVING t1.c != 5 ORDER BY t1.c;
+
+SET SESSION optimizer_switch='index_condition_pushdown=on';
+EXPLAIN
+SELECT t1.b, t1.c FROM t1, t2 WHERE t1.a = t2.a AND t1.b != 0
+  HAVING t1.c != 5 ORDER BY t1.c;
+SELECT t1.b, t1.c FROM t1, t2 WHERE t1.a = t2.a AND t1.b != 0
+  HAVING t1.c != 5 ORDER BY t1.c;
+
+DROP TABLE t1,t2;

mysql-test/r/innodb_icp.result

@@ -506,7 +506,7 @@ SELECT c2 FROM t1 JOIN t2 ON t1.c1 = t2.c1
 WHERE (t2.pk <= 4 AND t1.pk IN (2,1)) OR
 (t1.pk > 1 AND t2.pk BETWEEN 6 AND 6);
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	range	PRIMARY	PRIMARY	4	NULL	1	Using index condition
+1	SIMPLE	t1	range	PRIMARY	PRIMARY	4	NULL	1	Using index condition; Using where
 1	SIMPLE	t2	range	PRIMARY	PRIMARY	4	NULL	2	Using index condition; Using where; Using join buffer (flat, BNL join)
 SELECT c2 FROM t1 JOIN t2 ON t1.c1 = t2.c1
 WHERE (t2.pk <= 4 AND t1.pk IN (2,1)) OR
@@ -648,12 +648,43 @@ SELECT * FROM t1
 WHERE NOT(b = 'Texas') AND b BETWEEN 'wy' AND 'y' OR b = 'Pennsylvania'
   ORDER BY a;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	range	b	b	13	NULL	2	Using index condition; Rowid-ordered scan; Using filesort
+1	SIMPLE	t1	range	b	b	13	NULL	2	Using index condition; Using where; Rowid-ordered scan; Using filesort
 SELECT * FROM t1 
 WHERE NOT(b = 'Texas') AND b BETWEEN 'wy' AND 'y' OR b = 'Pennsylvania'
   ORDER BY a;
 a	b
 d	xdmbdkpjda
 DROP TABLE t1;
+#
+# Bug#886145: join with ICP + ORDER BY  
+#
+CREATE TABLE t1 (b int NOT NULL, c int, a varchar(1024), PRIMARY KEY (b));
+INSERT INTO t1 VALUES (1,4,'Ill');
+CREATE TABLE t2 (a varchar(1024), KEY (a(512)));
+INSERT INTO t2 VALUES
+('Ill'), ('eckqzsflbzaffti'), ('w'), ('she'), ('gxbwypqtjzwywwer'), ('w');
+SET SESSION optimizer_switch='index_condition_pushdown=off';
+EXPLAIN
+SELECT t1.b, t1.c FROM t1, t2 WHERE t1.a = t2.a AND t1.b != 0 
+HAVING t1.c != 5 ORDER BY t1.c;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	range	PRIMARY	PRIMARY	4	NULL	2	Using where; Using filesort
+1	SIMPLE	t2	ref	a	a	515	test.t1.a	1	Using where
+SELECT t1.b, t1.c FROM t1, t2 WHERE t1.a = t2.a AND t1.b != 0
+HAVING t1.c != 5 ORDER BY t1.c;
+b	c
+1	4
+SET SESSION optimizer_switch='index_condition_pushdown=on';
+EXPLAIN
+SELECT t1.b, t1.c FROM t1, t2 WHERE t1.a = t2.a AND t1.b != 0
+HAVING t1.c != 5 ORDER BY t1.c;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	range	PRIMARY	PRIMARY	4	NULL	2	Using index condition; Using where; Using filesort
+1	SIMPLE	t2	ref	a	a	515	test.t1.a	1	Using where
+SELECT t1.b, t1.c FROM t1, t2 WHERE t1.a = t2.a AND t1.b != 0
+HAVING t1.c != 5 ORDER BY t1.c;
+b	c
+1	4
+DROP TABLE t1,t2;
 set optimizer_switch=@innodb_icp_tmp;
 set storage_engine= @save_storage_engine;

mysql-test/r/innodb_mrr.result

@@ -186,7 +186,7 @@ explain
 select * from t4 where a IS NULL and b IS NULL and (c IS NULL or c='no-such-row1'
                                                       or c='no-such-row2');
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t4	range	idx1	idx1	29	NULL	16	Using index condition; Rowid-ordered scan
+1	SIMPLE	t4	range	idx1	idx1	29	NULL	16	Using index condition; Using where; Rowid-ordered scan
 select * from t4 where a IS NULL and b IS NULL and (c IS NULL or c='no-such-row1'
                                                     or c='no-such-row2');
 a	b	c	filler
@@ -208,7 +208,7 @@ NULL	NULL	NULL	NULL-1
 explain 
 select * from t4 where (a ='b-1' or a='bb-1') and b IS NULL and (c='c-1' or c='cc-2');
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t4	range	idx1	idx1	29	NULL	32	Using index condition; Rowid-ordered scan
+1	SIMPLE	t4	range	idx1	idx1	29	NULL	32	Using index condition; Using where; Rowid-ordered scan
 select * from t4 where (a ='b-1' or a='bb-1') and b IS NULL and (c='c-1' or c='cc-2');
 a	b	c	filler
 b-1	NULL	c-1	NULL-15

mysql-test/r/join_cache.result

@@ -4968,7 +4968,7 @@ EXPLAIN
 SELECT * FROM t1,t2
 WHERE t1.f1 = t2.f4 AND (t1.f3 = 1 AND t2.f3 = 4 OR t1.f3 = 2 AND t2.f3 = 6);
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	range	PRIMARY	PRIMARY	4	NULL	2	Using index condition; Rowid-ordered scan
+1	SIMPLE	t1	range	PRIMARY	PRIMARY	4	NULL	2	Using index condition; Using where; Rowid-ordered scan
 1	SIMPLE	t2	range	PRIMARY	PRIMARY	4	NULL	2	Using index condition; Using where; Rowid-ordered scan; Using join buffer (flat, BNL join)
 SELECT * FROM t1,t2
 WHERE t1.f1 = t2.f4 AND (t1.f3 = 1 AND t2.f3 = 4 OR t1.f3 = 2 AND t2.f3 = 6);

mysql-test/r/maria_icp.result

@@ -512,7 +512,7 @@ SELECT c2 FROM t1 JOIN t2 ON t1.c1 = t2.c1
 WHERE (t2.pk <= 4 AND t1.pk IN (2,1)) OR
 (t1.pk > 1 AND t2.pk BETWEEN 6 AND 6);
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	range	PRIMARY	PRIMARY	4	NULL	2	Using index condition; Rowid-ordered scan
+1	SIMPLE	t1	range	PRIMARY	PRIMARY	4	NULL	2	Using index condition; Using where; Rowid-ordered scan
 1	SIMPLE	t2	range	PRIMARY	PRIMARY	4	NULL	2	Using index condition; Using where; Rowid-ordered scan; Using join buffer (flat, BNL join)
 SELECT c2 FROM t1 JOIN t2 ON t1.c1 = t2.c1
 WHERE (t2.pk <= 4 AND t1.pk IN (2,1)) OR
@@ -654,12 +654,43 @@ SELECT * FROM t1
 WHERE NOT(b = 'Texas') AND b BETWEEN 'wy' AND 'y' OR b = 'Pennsylvania'
   ORDER BY a;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	range	b	b	13	NULL	2	Using index condition; Rowid-ordered scan; Using filesort
+1	SIMPLE	t1	range	b	b	13	NULL	2	Using index condition; Using where; Rowid-ordered scan; Using filesort
 SELECT * FROM t1 
 WHERE NOT(b = 'Texas') AND b BETWEEN 'wy' AND 'y' OR b = 'Pennsylvania'
   ORDER BY a;
 a	b
 d	xdmbdkpjda
 DROP TABLE t1;
+#
+# Bug#886145: join with ICP + ORDER BY  
+#
+CREATE TABLE t1 (b int NOT NULL, c int, a varchar(1024), PRIMARY KEY (b));
+INSERT INTO t1 VALUES (1,4,'Ill');
+CREATE TABLE t2 (a varchar(1024), KEY (a(512)));
+INSERT INTO t2 VALUES
+('Ill'), ('eckqzsflbzaffti'), ('w'), ('she'), ('gxbwypqtjzwywwer'), ('w');
+SET SESSION optimizer_switch='index_condition_pushdown=off';
+EXPLAIN
+SELECT t1.b, t1.c FROM t1, t2 WHERE t1.a = t2.a AND t1.b != 0 
+HAVING t1.c != 5 ORDER BY t1.c;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	system	PRIMARY	NULL	NULL	NULL	1	
+1	SIMPLE	t2	ref	a	a	515	const	1	Using where
+SELECT t1.b, t1.c FROM t1, t2 WHERE t1.a = t2.a AND t1.b != 0
+HAVING t1.c != 5 ORDER BY t1.c;
+b	c
+1	4
+SET SESSION optimizer_switch='index_condition_pushdown=on';
+EXPLAIN
+SELECT t1.b, t1.c FROM t1, t2 WHERE t1.a = t2.a AND t1.b != 0
+HAVING t1.c != 5 ORDER BY t1.c;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	system	PRIMARY	NULL	NULL	NULL	1	
+1	SIMPLE	t2	ref	a	a	515	const	1	Using where
+SELECT t1.b, t1.c FROM t1, t2 WHERE t1.a = t2.a AND t1.b != 0
+HAVING t1.c != 5 ORDER BY t1.c;
+b	c
+1	4
+DROP TABLE t1,t2;
 set storage_engine= @save_storage_engine;
 set optimizer_switch=@maria_icp_tmp;

mysql-test/r/maria_mrr.result

@@ -187,7 +187,7 @@ explain
 select * from t4 where a IS NULL and b IS NULL and (c IS NULL or c='no-such-row1'
                                                       or c='no-such-row2');
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t4	range	idx1	idx1	29	NULL	16	Using index condition; Rowid-ordered scan
+1	SIMPLE	t4	range	idx1	idx1	29	NULL	16	Using index condition; Using where; Rowid-ordered scan
 select * from t4 where a IS NULL and b IS NULL and (c IS NULL or c='no-such-row1'
                                                     or c='no-such-row2');
 a	b	c	filler
@@ -209,7 +209,7 @@ NULL	NULL	NULL	NULL-1
 explain 
 select * from t4 where (a ='b-1' or a='bb-1') and b IS NULL and (c='c-1' or c='cc-2');
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t4	range	idx1	idx1	29	NULL	32	Using index condition; Rowid-ordered scan
+1	SIMPLE	t4	range	idx1	idx1	29	NULL	32	Using index condition; Using where; Rowid-ordered scan
 select * from t4 where (a ='b-1' or a='bb-1') and b IS NULL and (c='c-1' or c='cc-2');
 a	b	c	filler
 b-1	NULL	c-1	NULL-15

mysql-test/r/mrr_icp_extra.result

@@ -72,7 +72,7 @@ insert into t1 values (2, 1), (1, 1), (4, NULL), (3, NULL), (6, 2), (5, 2);
 insert into t1 values (2, 11), (1, 11), (4, 14), (3, 14), (6, 12), (5, 12);
 explain select * from t1 where b=1 or b is null order by a;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	ref_or_null	b	b	5	const	4	Using index condition; Using filesort
+1	SIMPLE	t1	ref_or_null	b	b	5	const	4	Using index condition; Using where; Using filesort
 select * from t1 where b=1 or b is null order by a;
 a	b
 1	1
@@ -81,7 +81,7 @@ a	b
 4	NULL
 explain select * from t1 where b=2 or b is null order by a;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	ref_or_null	b	b	5	const	3	Using index condition; Using filesort
+1	SIMPLE	t1	ref_or_null	b	b	5	const	3	Using index condition; Using where; Using filesort
 select * from t1 where b=2 or b is null order by a;
 a	b
 3	NULL
@@ -123,7 +123,7 @@ Table	Op	Msg_type	Msg_text
 test.t1	optimize	status	OK
 explain select * from t1 force index (a) where a=0 or a=2;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	range	a	a	4	NULL	4	Using index condition; Rowid-ordered scan
+1	SIMPLE	t1	range	a	a	4	NULL	4	Using index condition; Using where; Rowid-ordered scan
 select * from t1 force index (a) where a=0 or a=2;
 a	b	c
 0	NULL	0

mysql-test/r/myisam_icp.result

@@ -510,7 +510,7 @@ SELECT c2 FROM t1 JOIN t2 ON t1.c1 = t2.c1
 WHERE (t2.pk <= 4 AND t1.pk IN (2,1)) OR
 (t1.pk > 1 AND t2.pk BETWEEN 6 AND 6);
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	range	PRIMARY	PRIMARY	4	NULL	2	Using index condition; Rowid-ordered scan
+1	SIMPLE	t1	range	PRIMARY	PRIMARY	4	NULL	2	Using index condition; Using where; Rowid-ordered scan
 1	SIMPLE	t2	range	PRIMARY	PRIMARY	4	NULL	2	Using index condition; Using where; Rowid-ordered scan; Using join buffer (flat, BNL join)
 SELECT c2 FROM t1 JOIN t2 ON t1.c1 = t2.c1
 WHERE (t2.pk <= 4 AND t1.pk IN (2,1)) OR
@@ -652,13 +652,44 @@ SELECT * FROM t1
 WHERE NOT(b = 'Texas') AND b BETWEEN 'wy' AND 'y' OR b = 'Pennsylvania'
   ORDER BY a;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	range	b	b	13	NULL	2	Using index condition; Rowid-ordered scan; Using filesort
+1	SIMPLE	t1	range	b	b	13	NULL	2	Using index condition; Using where; Rowid-ordered scan; Using filesort
 SELECT * FROM t1 
 WHERE NOT(b = 'Texas') AND b BETWEEN 'wy' AND 'y' OR b = 'Pennsylvania'
   ORDER BY a;
 a	b
 d	xdmbdkpjda
 DROP TABLE t1;
+#
+# Bug#886145: join with ICP + ORDER BY  
+#
+CREATE TABLE t1 (b int NOT NULL, c int, a varchar(1024), PRIMARY KEY (b));
+INSERT INTO t1 VALUES (1,4,'Ill');
+CREATE TABLE t2 (a varchar(1024), KEY (a(512)));
+INSERT INTO t2 VALUES
+('Ill'), ('eckqzsflbzaffti'), ('w'), ('she'), ('gxbwypqtjzwywwer'), ('w');
+SET SESSION optimizer_switch='index_condition_pushdown=off';
+EXPLAIN
+SELECT t1.b, t1.c FROM t1, t2 WHERE t1.a = t2.a AND t1.b != 0 
+HAVING t1.c != 5 ORDER BY t1.c;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	system	PRIMARY	NULL	NULL	NULL	1	
+1	SIMPLE	t2	ref	a	a	515	const	1	Using where
+SELECT t1.b, t1.c FROM t1, t2 WHERE t1.a = t2.a AND t1.b != 0
+HAVING t1.c != 5 ORDER BY t1.c;
+b	c
+1	4
+SET SESSION optimizer_switch='index_condition_pushdown=on';
+EXPLAIN
+SELECT t1.b, t1.c FROM t1, t2 WHERE t1.a = t2.a AND t1.b != 0
+HAVING t1.c != 5 ORDER BY t1.c;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	system	PRIMARY	NULL	NULL	NULL	1	
+1	SIMPLE	t2	ref	a	a	515	const	1	Using where
+SELECT t1.b, t1.c FROM t1, t2 WHERE t1.a = t2.a AND t1.b != 0
+HAVING t1.c != 5 ORDER BY t1.c;
+b	c
+1	4
+DROP TABLE t1,t2;
 drop table if exists t0, t1, t1i, t1m;
 #
 # BUG#826935 Assertion `!table || (!table->read_set || bitmap_is_set(table->read_set, field_index))' failed

mysql-test/r/myisam_mrr.result

@@ -188,7 +188,7 @@ explain
 select * from t4 where a IS NULL and b IS NULL and (c IS NULL or c='no-such-row1'
                                                       or c='no-such-row2');
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t4	range	idx1	idx1	29	NULL	10	Using index condition; Rowid-ordered scan
+1	SIMPLE	t4	range	idx1	idx1	29	NULL	10	Using index condition; Using where; Rowid-ordered scan
 select * from t4 where a IS NULL and b IS NULL and (c IS NULL or c='no-such-row1'
                                                     or c='no-such-row2');
 a	b	c	filler
@@ -210,7 +210,7 @@ NULL	NULL	NULL	NULL-1
 explain 
 select * from t4 where (a ='b-1' or a='bb-1') and b IS NULL and (c='c-1' or c='cc-2');
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t4	range	idx1	idx1	29	NULL	21	Using index condition; Rowid-ordered scan
+1	SIMPLE	t4	range	idx1	idx1	29	NULL	21	Using index condition; Using where; Rowid-ordered scan
 select * from t4 where (a ='b-1' or a='bb-1') and b IS NULL and (c='c-1' or c='cc-2');
 a	b	c	filler
 b-1	NULL	c-1	NULL-15

mysql-test/r/range_mrr_icp.result

@@ -927,7 +927,7 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t1	range	status	status	23	NULL	10	Using index condition; Rowid-ordered scan
 EXPLAIN SELECT * FROM t1 WHERE status < 'A' OR status > 'B';
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	range	status	status	23	NULL	10	Using index condition; Rowid-ordered scan
+1	SIMPLE	t1	range	status	status	23	NULL	10	Using index condition; Using where; Rowid-ordered scan
 SELECT * FROM t1 WHERE status NOT BETWEEN 'A' AND 'B';
 id	status
 53	C
@@ -1031,13 +1031,13 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t1	range	a	a	13	NULL	#	Using index condition; Rowid-ordered scan
 explain select * from t1 where a = 'a' or a='a ';
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t1	range	a	a	13	NULL	#	Using index condition; Rowid-ordered scan
+1	SIMPLE	t1	range	a	a	13	NULL	#	Using index condition; Using where; Rowid-ordered scan
 explain select * from t2 where a between 'a' and 'a ';
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t2	ref	a	a	13	const	#	Using index condition
 explain select * from t2 where a = 'a' or a='a ';
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t2	ref	a	a	13	const	#	Using index condition
+1	SIMPLE	t2	ref	a	a	13	const	#	Using index condition; Using where
 update t1 set a='b' where a<>'a';
 explain select * from t1 where a not between 'b' and 'b';
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
@@ -1795,7 +1795,7 @@ INSERT INTO t100(I,J) VALUES(8,26);
 
 EXPLAIN SELECT * FROM t100 WHERE I <> 6 OR (I <> 8 AND J = 5);
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	t100	range	I	I	10	NULL	4	Using index condition; Rowid-ordered scan
+1	SIMPLE	t100	range	I	I	10	NULL	4	Using index condition; Using where; Rowid-ordered scan
 
 SELECT * FROM t100 WHERE I <> 6 OR (I <> 8 AND J = 5);
 K	I	J

mysql-test/r/select_jcl6.result

@@ -3427,7 +3427,7 @@ SELECT t2.sku, t2.sppr, t2.name, t1.sku, t1.pr
 FROM t2, t1 WHERE t2.sku=20 AND (t2.sku=t1.sku OR t2.sppr=t1.sku);
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t2	const	PRIMARY	PRIMARY	4	const	1	
-1	SIMPLE	t1	range	PRIMARY	PRIMARY	4	NULL	2	Using index condition; Rowid-ordered scan
+1	SIMPLE	t1	range	PRIMARY	PRIMARY	4	NULL	2	Using index condition; Using where; Rowid-ordered scan
 DROP TABLE t1,t2;
 CREATE TABLE t1 (i TINYINT UNSIGNED NOT NULL);
 INSERT t1 SET i = 0;

mysql-test/r/subselect_mat_cost.result

@@ -285,7 +285,7 @@ WHERE Code NOT IN (SELECT Country FROM CountryLanguage WHERE Language = 'English
 AND (CountryLanguage.Language = 'French' OR CountryLanguage.Language = 'Spanish')
 AND Code = Country;
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	PRIMARY	CountryLanguage	range	PRIMARY,Language	Language	30	NULL	45	Using index condition; Rowid-ordered scan
+1	PRIMARY	CountryLanguage	range	PRIMARY,Language	Language	30	NULL	45	Using index condition; Using where; Rowid-ordered scan
 1	PRIMARY	Country	eq_ref	PRIMARY	PRIMARY	3	world.CountryLanguage.Country	1	Using index condition
 2	SUBQUERY	CountryLanguage	ref	PRIMARY,Language	Language	30	const	47	Using index condition
 SELECT Country.Name
@@ -348,7 +348,7 @@ FROM City LEFT JOIN Country ON (Country = Code and City.Population < 10000))
 AND Language IN ('English','Spanish');
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	PRIMARY	CountryLanguage	range	Language	Language	30	NULL	72	Using index condition; Using where; Rowid-ordered scan
-2	DEPENDENT SUBQUERY	City	ref	CityName	CityName	35	func	2	Using index condition
+2	DEPENDENT SUBQUERY	City	ref	CityName	CityName	35	func	2	Using index condition; Using where
 2	DEPENDENT SUBQUERY	Country	eq_ref	PRIMARY	PRIMARY	3	world.City.Country	1	Using where; Using index
 select count(*)
 from CountryLanguage

sql/opt_index_cond_pushdown.cc

@@ -239,11 +239,9 @@ Item *make_cond_for_index(Item *cond, TABLE *table, uint keyno,
 }
 
 
-Item *make_cond_remainder(Item *cond, bool exclude_index)
+Item *make_cond_remainder(Item *cond, TABLE *table, uint keyno,
+                          bool other_tbls_ok, bool exclude_index)
 {
-  if (exclude_index && cond->marker == ICP_COND_USES_INDEX_ONLY)
-    return 0; /* Already checked */
-
   if (cond->type() == Item::COND_ITEM)
   {
     table_map tbl_map= 0;
@@ -257,7 +255,8 @@ Item *make_cond_remainder(Item *cond, bool exclude_index)
       Item *item;
       while ((item=li++))
       {
-	Item *fix= make_cond_remainder(item, exclude_index);
+	Item *fix= make_cond_remainder(item, table, keyno,
+                                       other_tbls_ok, exclude_index);
 	if (fix)
         {
 	  new_cond->argument_list()->push_back(fix);
@@ -284,7 +283,8 @@ Item *make_cond_remainder(Item *cond, bool exclude_index)
       Item *item;
       while ((item=li++))
       {
-	Item *fix= make_cond_remainder(item, FALSE);
+	Item *fix= make_cond_remainder(item, table, keyno, 
+                                       other_tbls_ok, FALSE);
 	if (!fix)
 	  return (COND*) 0;
 	new_cond->argument_list()->push_back(fix);
@@ -296,7 +296,14 @@ Item *make_cond_remainder(Item *cond, bool exclude_index)
       return new_cond;
     }
   }
-  return cond;
+  else
+  {
+    if (exclude_index && 
+        uses_index_fields_only(cond, table, keyno, other_tbls_ok))
+      return 0;
+    else
+      return cond;
+  }
 }
 
 
@@ -368,7 +375,8 @@ void push_index_cond(JOIN_TAB *tab, uint keyno)
         tab->ref.disable_cache= TRUE;
 
       Item *row_cond= tab->idx_cond_fact_out ? 
-                        make_cond_remainder(tab->select_cond, TRUE) :
+	                make_cond_remainder(tab->select_cond, tab->table, keyno,
+			                    tab->icp_other_tables_ok, TRUE) :
 	                tab->pre_idx_push_select_cond;
 
       DBUG_EXECUTE("where",

sql/sql_select.cc

@@ -2565,7 +2565,9 @@ JOIN::exec()
         if (curr_table->pre_idx_push_select_cond &&
             !curr_table->pre_idx_push_select_cond->fixed)
           curr_table->pre_idx_push_select_cond->fix_fields(thd, 0);
-          
+
+        curr_table->select->pre_idx_push_select_cond=
+          curr_table->pre_idx_push_select_cond;
         curr_table->set_select_cond(curr_table->select->cond, __LINE__);
 	curr_table->select_cond->top_level_item();
 	DBUG_EXECUTE("where",print_where(curr_table->select->cond,