Post-merge fixes for Bug#19399 "Stored Procedures 'Lost Connection'

when dropping/creating tables"

mysql-test/r/ps.result

@@ -485,11 +485,6 @@ execute stmt;
 pnum
 deallocate prepare stmt;
 drop table t1, t2;
-create table t1 (a varchar(20));
-insert into t1 values ('foo');
-prepare stmt FROM 'SELECT char_length (a) FROM t1';
-ERROR 42000: FUNCTION test.char_length does not exist
-drop table t1;
 prepare stmt from "SELECT SQL_CALC_FOUND_ROWS 'foo' UNION SELECT 'bar' LIMIT 0";
 execute stmt;
 foo
@@ -502,77 +497,6 @@ SELECT FOUND_ROWS();
 FOUND_ROWS()
 2
 deallocate prepare stmt;
-create table t1 (a char(3) not null, b char(3) not null,
-c char(3) not null, primary key  (a, b, c));
-create table t2 like t1;
-prepare stmt from
-"select t1.a from (t1 left outer join t2 on t2.a=1 and t1.b=t2.b)
-  where t1.a=1";
-execute stmt;
-a
-execute stmt;
-a
-execute stmt;
-a
-prepare stmt from
-"select t1.a, t1.b, t1.c, t2.a, t2.b, t2.c from
-(t1 left outer join t2 on t2.a=? and t1.b=t2.b)
-left outer join t2 t3 on t3.a=? where t1.a=?";
-set @a:=1, @b:=1, @c:=1;
-execute stmt using @a, @b, @c;
-a	b	c	a	b	c
-execute stmt using @a, @b, @c;
-a	b	c	a	b	c
-execute stmt using @a, @b, @c;
-a	b	c	a	b	c
-deallocate prepare stmt;
-drop table t1,t2;
-SET @aux= "SELECT COUNT(*)
-                FROM INFORMATION_SCHEMA.COLUMNS A,
-                INFORMATION_SCHEMA.COLUMNS B
-                WHERE A.TABLE_SCHEMA = B.TABLE_SCHEMA
-                AND A.TABLE_NAME = B.TABLE_NAME
-                AND A.COLUMN_NAME = B.COLUMN_NAME AND
-                A.TABLE_NAME = 'user'";
-prepare my_stmt from @aux;
-execute my_stmt;
-COUNT(*)
-37
-execute my_stmt;
-COUNT(*)
-37
-execute my_stmt;
-COUNT(*)
-37
-deallocate prepare my_stmt;
-drop procedure if exists p1|
-drop table if exists t1|
-create table t1 (id int)|
-insert into t1 values(1)|
-create procedure p1(a int, b int)
-begin
-declare c int;
-select max(id)+1 into c from t1;
-insert into t1 select a+b;
-insert into t1 select a-b;
-insert into t1 select a-c;
-end|
-set @a= 3, @b= 4|
-prepare stmt from "call p1(?, ?)"|
-execute stmt using @a, @b|
-execute stmt using @a, @b|
-select * from t1|
-id
-1
-7
--1
-1
-7
--1
--5
-deallocate prepare stmt|
-drop procedure p1|
-drop table t1|
 drop table if exists t1;
 Warnings:
 Note	1051	Unknown table 't1'
@@ -636,47 +560,6 @@ id
 3
 deallocate prepare stmt;
 drop table t1, t2;
-create table t1 (a int);
-insert into t1 (a) values (1), (2), (3), (4), (5), (6), (7), (8), (9), (10);
-prepare stmt from "select * from t1 limit ?, ?";
-set @offset=0, @limit=1;
-execute stmt using @offset, @limit;
-a
-1
-select * from t1 limit 0, 1;
-a
-1
-set @offset=3, @limit=2;
-execute stmt using @offset, @limit;
-a
-4
-5
-select * from t1 limit 3, 2;
-a
-4
-5
-prepare stmt from "select * from t1 limit ?";
-execute stmt using @limit;
-a
-1
-2
-prepare stmt from "select * from t1 where a in (select a from t1 limit ?)";
-ERROR 42000: This version of MySQL doesn't yet support 'LIMIT & IN/ALL/ANY/SOME subquery'
-prepare stmt from "select * from t1 union all select * from t1 limit ?, ?";
-set @offset=9;
-set @limit=2;
-execute stmt using @offset, @limit;
-a
-10
-1
-prepare stmt from "(select * from t1 limit ?, ?) union all
-                   (select * from t1 limit ?, ?) order by a limit ?";
-execute stmt using @offset, @limit, @offset, @limit, @limit;
-a
-10
-10
-drop table t1;
-deallocate prepare stmt;
 create table t1 (id int);
 prepare stmt from "insert into t1 (id) select id from t1 union select id from t1";
 execute stmt;
@@ -777,15 +660,6 @@ ERROR 42000: You have an error in your SQL syntax; check the manual that corresp
 select ? from t1;
 ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '? from t1' at line 1
 drop table t1;
-CREATE TABLE b12651_T1(a int) ENGINE=MYISAM;
-CREATE TABLE b12651_T2(b int) ENGINE=MYISAM;
-CREATE VIEW  b12651_V1 as SELECT b FROM b12651_T2;
-PREPARE b12651 FROM 'SELECT 1 FROM b12651_T1 WHERE a IN (SELECT b FROM b12651_V1)';
-EXECUTE b12651;
-1
-DROP VIEW b12651_V1;
-DROP TABLE b12651_T1, b12651_T2;
-DEALLOCATE PREPARE b12651;
 prepare stmt from "select @@time_zone";
 execute stmt;
 @@time_zone
@@ -1002,6 +876,147 @@ select @@max_prepared_stmt_count, @@prepared_stmt_count;
 @@max_prepared_stmt_count	@@prepared_stmt_count
 3	0
 set global max_prepared_stmt_count= @old_max_prepared_stmt_count;
+drop table if exists t1;
+create temporary table if not exists t1 (a1 int);
+prepare stmt from "delete t1 from t1 where (cast(a1/3 as unsigned) * 3) = a1";
+drop temporary table t1;
+create temporary table if not exists t1 (a1 int);
+execute stmt;
+drop temporary table t1;
+create temporary table if not exists t1 (a1 int);
+execute stmt;
+drop temporary table t1;
+create temporary table if not exists t1 (a1 int);
+execute stmt;
+drop temporary table t1;
+deallocate prepare stmt;
+End of 4.1 tests
+create table t1 (a varchar(20));
+insert into t1 values ('foo');
+prepare stmt FROM 'SELECT char_length (a) FROM t1';
+ERROR 42000: FUNCTION test.char_length does not exist
+drop table t1;
+create table t1 (a char(3) not null, b char(3) not null,
+c char(3) not null, primary key  (a, b, c));
+create table t2 like t1;
+prepare stmt from
+"select t1.a from (t1 left outer join t2 on t2.a=1 and t1.b=t2.b)
+  where t1.a=1";
+execute stmt;
+a
+execute stmt;
+a
+execute stmt;
+a
+prepare stmt from
+"select t1.a, t1.b, t1.c, t2.a, t2.b, t2.c from
+(t1 left outer join t2 on t2.a=? and t1.b=t2.b)
+left outer join t2 t3 on t3.a=? where t1.a=?";
+set @a:=1, @b:=1, @c:=1;
+execute stmt using @a, @b, @c;
+a	b	c	a	b	c
+execute stmt using @a, @b, @c;
+a	b	c	a	b	c
+execute stmt using @a, @b, @c;
+a	b	c	a	b	c
+deallocate prepare stmt;
+drop table t1,t2;
+SET @aux= "SELECT COUNT(*)
+                FROM INFORMATION_SCHEMA.COLUMNS A,
+                INFORMATION_SCHEMA.COLUMNS B
+                WHERE A.TABLE_SCHEMA = B.TABLE_SCHEMA
+                AND A.TABLE_NAME = B.TABLE_NAME
+                AND A.COLUMN_NAME = B.COLUMN_NAME AND
+                A.TABLE_NAME = 'user'";
+prepare my_stmt from @aux;
+execute my_stmt;
+COUNT(*)
+37
+execute my_stmt;
+COUNT(*)
+37
+execute my_stmt;
+COUNT(*)
+37
+deallocate prepare my_stmt;
+drop procedure if exists p1|
+drop table if exists t1|
+create table t1 (id int)|
+insert into t1 values(1)|
+create procedure p1(a int, b int)
+begin
+declare c int;
+select max(id)+1 into c from t1;
+insert into t1 select a+b;
+insert into t1 select a-b;
+insert into t1 select a-c;
+end|
+set @a= 3, @b= 4|
+prepare stmt from "call p1(?, ?)"|
+execute stmt using @a, @b|
+execute stmt using @a, @b|
+select * from t1|
+id
+1
+7
+-1
+1
+7
+-1
+-5
+deallocate prepare stmt|
+drop procedure p1|
+drop table t1|
+create table t1 (a int);
+insert into t1 (a) values (1), (2), (3), (4), (5), (6), (7), (8), (9), (10);
+prepare stmt from "select * from t1 limit ?, ?";
+set @offset=0, @limit=1;
+execute stmt using @offset, @limit;
+a
+1
+select * from t1 limit 0, 1;
+a
+1
+set @offset=3, @limit=2;
+execute stmt using @offset, @limit;
+a
+4
+5
+select * from t1 limit 3, 2;
+a
+4
+5
+prepare stmt from "select * from t1 limit ?";
+execute stmt using @limit;
+a
+1
+2
+prepare stmt from "select * from t1 where a in (select a from t1 limit ?)";
+ERROR 42000: This version of MySQL doesn't yet support 'LIMIT & IN/ALL/ANY/SOME subquery'
+prepare stmt from "select * from t1 union all select * from t1 limit ?, ?";
+set @offset=9;
+set @limit=2;
+execute stmt using @offset, @limit;
+a
+10
+1
+prepare stmt from "(select * from t1 limit ?, ?) union all
+                   (select * from t1 limit ?, ?) order by a limit ?";
+execute stmt using @offset, @limit, @offset, @limit, @limit;
+a
+10
+10
+drop table t1;
+deallocate prepare stmt;
+CREATE TABLE b12651_T1(a int) ENGINE=MYISAM;
+CREATE TABLE b12651_T2(b int) ENGINE=MYISAM;
+CREATE VIEW  b12651_V1 as SELECT b FROM b12651_T2;
+PREPARE b12651 FROM 'SELECT 1 FROM b12651_T1 WHERE a IN (SELECT b FROM b12651_V1)';
+EXECUTE b12651;
+1
+DROP VIEW b12651_V1;
+DROP TABLE b12651_T1, b12651_T2;
+DEALLOCATE PREPARE b12651;
 create table t1 (id int);
 prepare ins_call from "insert into t1 (id) values (1)";
 execute ins_call;

mysql-test/t/ps.test

@@ -527,6 +527,7 @@ set @a=200887, @b=860;
 # this query did not return all matching rows
 execute stmt using @a, @b;
 deallocate prepare stmt;
+
 drop table t1;
 
 #
@@ -586,7 +587,6 @@ execute stmt;
 execute stmt;
 deallocate prepare stmt;
 drop table t1;
-
 #
 # Bug#11458 "Prepared statement with subselects return random data":
 # drop PARAM_TABLE_BIT from the list of tables used by a subquery
@@ -655,7 +655,6 @@ execute stmt using @user_id, @id;
 execute stmt using @user_id, @id;
 deallocate prepare stmt;
 drop table t1, t2, t3, t4;
-
 #
 # Bug#9379: make sure that Item::collation is reset when one sets
 # a parameter marker from a string variable.
@@ -770,7 +769,6 @@ execute stmt using @like;
 deallocate prepare stmt;
 drop table t1;
 
-
 #
 # Bug#13134 "Length of VARCHAR() utf8 column is increasing when table is
 # recreated with PS/SP"
@@ -841,17 +839,17 @@ set global max_prepared_stmt_count=10000000000000000;
 select @@max_prepared_stmt_count;
 set global max_prepared_stmt_count=default;
 select @@max_prepared_stmt_count;
---error 1229 # ER_GLOBAL_VARIABLE
+--error ER_GLOBAL_VARIABLE
 set @@max_prepared_stmt_count=1;
---error 1229 # ER_GLOBAL_VARIABLE
+--error ER_GLOBAL_VARIABLE
 set max_prepared_stmt_count=1;
---error 1229 # ER_GLOBAL_VARIABLE
+--error ER_GLOBAL_VARIABLE
 set local max_prepared_stmt_count=1;
---error 1229 # ER_GLOBAL_VARIABLE
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
 set local prepared_stmt_count=0;
---error 1229 # ER_GLOBAL_VARIABLE
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR
 set @@prepared_stmt_count=0;
---error 1232 # ER_WRONG_TYPE_FOR_VAR
+--error ER_INCORRECT_GLOBAL_LOCAL_VAR 
 set global prepared_stmt_count=1;
 # set to a reasonable limit works
 set global max_prepared_stmt_count=1;
@@ -861,13 +859,13 @@ select @@max_prepared_stmt_count;
 #
 set global max_prepared_stmt_count=0;
 select @@max_prepared_stmt_count, @@prepared_stmt_count;
---error 1105 # ER_UNKNOWN_ERROR
+--error ER_MAX_PREPARED_STMT_COUNT_REACHED
 prepare stmt from "select 1";
 select @@prepared_stmt_count;
 set global max_prepared_stmt_count=1;
 prepare stmt from "select 1";
 select @@prepared_stmt_count;
---error 1105 # ER_UNKNOWN_ERROR
+--error ER_MAX_PREPARED_STMT_COUNT_REACHED
 prepare stmt1 from "select 1";
 select @@prepared_stmt_count;
 deallocate prepare stmt;
@@ -886,13 +884,13 @@ select @@prepared_stmt_count;
 #
 select @@prepared_stmt_count, @@max_prepared_stmt_count;
 set global max_prepared_stmt_count=0;
---error 1105 # ER_UNKNOWN_ERROR
+--error ER_MAX_PREPARED_STMT_COUNT_REACHED
 prepare stmt from "select 1";
 # Result: the old statement is deallocated, the new is not created.
 --error 1243 # ER_UNKNOWN_STMT_HANDLER
 execute stmt;
 select @@prepared_stmt_count;
---error 1105 # ER_UNKNOWN_ERROR
+--error ER_MAX_PREPARED_STMT_COUNT_REACHED
 prepare stmt from "select 1";
 select @@prepared_stmt_count;
 #
@@ -906,10 +904,10 @@ connect (con1,localhost,root,,);
 connection con1;
 prepare stmt from "select 2";
 prepare stmt1 from "select 3";
---error 1105 # ER_UNKNOWN_ERROR
+--error ER_MAX_PREPARED_STMT_COUNT_REACHED
 prepare stmt2 from "select 4";
 connection default;
---error 1105 # ER_UNKNOWN_ERROR 
+--error ER_MAX_PREPARED_STMT_COUNT_REACHED
 prepare stmt2 from "select 4";
 select @@max_prepared_stmt_count, @@prepared_stmt_count;
 disconnect con1;

sql/sql_lex.cc

@@ -126,7 +126,7 @@ void lex_start(THD *thd, uchar *buf,uint length)
   lex->param_list.empty();
   lex->view_list.empty();
   lex->prepared_stmt_params.empty();
-  lex->auxilliary_table_list.empty();
+  lex->auxiliary_table_list.empty();
   lex->unit.next= lex->unit.master=
     lex->unit.link_next= lex->unit.return_to= 0;
   lex->unit.prev= lex->unit.link_prev= 0;

sql/sql_prepare.cc

@@ -2138,9 +2138,9 @@ void reinit_stmt_before_use(THD *thd, LEX *lex)
     (multi-delete).  We do a full clean up, although at the moment all we
     need to clean in the tables of MULTI-DELETE list is 'table' member.
   */
-  for (TABLE_LIST *tables= (TABLE_LIST*) lex->auxilliary_table_list.first;
+  for (TABLE_LIST *tables= (TABLE_LIST*) lex->auxiliary_table_list.first;
        tables;
-       tables= tables->next)
+       tables= tables->next_global)
   {
     tables->reinit_before_use(thd);
   }

sql/table.cc

@@ -2992,14 +2992,27 @@ Field_iterator_table_ref::get_natural_column_ref()
     st_table_list::reinit_before_use()
 */
 
-void st_table_list::reinit_before_use(THD * /* thd */)
+void st_table_list::reinit_before_use(THD *thd)
 {
   /*
     Reset old pointers to TABLEs: they are not valid since the tables
     were closed in the end of previous prepare or execute call.
   */
   table= 0;
-  table_list= 0;
+  /* Reset is_schema_table_processed value(needed for I_S tables */
+  is_schema_table_processed= FALSE;
+
+  TABLE_LIST *embedded; /* The table at the current level of nesting. */
+  TABLE_LIST *embedding= this; /* The parent nested table reference. */
+  do
+  {
+    embedded= embedding;
+    if (embedded->prep_on_expr)
+      embedded->on_expr= embedded->prep_on_expr->copy_andor_structure(thd);
+    embedding= embedded->embedding;
+  }
+  while (embedding &&
+         embedding->nested_join->join_list.head() == embedded);
 }
 
 

sql/table.h

@@ -668,6 +668,7 @@ typedef struct st_table_list
   Security_context *find_view_security_context(THD *thd);
   bool prepare_view_securety_context(THD *thd);
 #endif
+  void reinit_before_use(THD *thd);
 
 private:
   bool prep_check_option(THD *thd, uint8 check_opt_type);
@@ -676,7 +677,6 @@ private:
     Cleanup for re-execution in a prepared statement or a stored
     procedure.
   */
-  void reinit_before_use(THD *thd);
 } TABLE_LIST;
 
 class Item;