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drop procedure if exists p1| drop procedure if exists p2| create procedure p1() begin prepare stmt from "select 1"; execute stmt; execute stmt; execute stmt; deallocate prepare stmt; end| call p1()| 1 1 1 1 1 1 call p1()| 1 1 1 1 1 1 call p1()| 1 1 1 1 1 1 drop procedure p1| create procedure p1() begin execute stmt; end| prepare stmt from "call p1()"| set @SAVE_SP_RECURSION_LEVELS=@@max_sp_recursion_depth| set @@max_sp_recursion_depth=100| execute stmt| ERROR HY000: The prepared statement contains a stored routine call that refers to that same statement. It's not allowed to execute a prepared statement in such a recursive manner execute stmt| ERROR HY000: The prepared statement contains a stored routine call that refers to that same statement. It's not allowed to execute a prepared statement in such a recursive manner execute stmt| ERROR HY000: The prepared statement contains a stored routine call that refers to that same statement. It's not allowed to execute a prepared statement in such a recursive manner call p1()| ERROR HY000: The prepared statement contains a stored routine call that refers to that same statement. It's not allowed to execute a prepared statement in such a recursive manner call p1()| ERROR HY000: The prepared statement contains a stored routine call that refers to that same statement. It's not allowed to execute a prepared statement in such a recursive manner call p1()| ERROR HY000: The prepared statement contains a stored routine call that refers to that same statement. It's not allowed to execute a prepared statement in such a recursive manner set @@max_sp_recursion_depth=@SAVE_SP_RECURSION_LEVELS| call p1()| ERROR HY000: Recursive limit 0 (as set by the max_sp_recursion_depth variable) was exceeded for routine p1 call p1()| ERROR HY000: Recursive limit 0 (as set by the max_sp_recursion_depth variable) was exceeded for routine p1 call p1()| ERROR HY000: Recursive limit 0 (as set by the max_sp_recursion_depth variable) was exceeded for routine p1 drop procedure p1| create procedure p1() begin prepare stmt from "create procedure p2() begin select 1; end"; execute stmt; deallocate prepare stmt; end| call p1()| ERROR HY000: This command is not supported in the prepared statement protocol yet call p1()| ERROR HY000: This command is not supported in the prepared statement protocol yet drop procedure p1| create procedure p1() begin prepare stmt from "drop procedure p2"; execute stmt; deallocate prepare stmt; end| call p1()| ERROR HY000: This command is not supported in the prepared statement protocol yet call p1()| ERROR HY000: This command is not supported in the prepared statement protocol yet drop procedure p1| create procedure p1() begin prepare stmt_drop from "drop table if exists t1"; execute stmt_drop; prepare stmt from "create table t1 (a int)"; execute stmt; insert into t1 (a) values (1); select * from t1; prepare stmt_alter from "alter table t1 add (b int)"; execute stmt_alter; insert into t1 (a,b) values (2,1); deallocate prepare stmt_alter; deallocate prepare stmt; deallocate prepare stmt_drop; end| call p1()| a 1 call p1()| a 1 drop procedure p1| create procedure p1() begin set @tab_name=concat("tab_", replace(curdate(), '-', '_')); set @drop_sql=concat("drop table if exists ", @tab_name); set @create_sql=concat("create table ", @tab_name, " (a int)"); set @insert_sql=concat("insert into ", @tab_name, " values (1), (2), (3)"); set @select_sql=concat("select * from ", @tab_name); select @tab_name; select @drop_sql; select @create_sql; select @insert_sql; select @select_sql; prepare stmt_drop from @drop_sql; execute stmt_drop; prepare stmt from @create_sql; execute stmt; prepare stmt from @insert_sql; execute stmt; prepare stmt from @select_sql; execute stmt; execute stmt_drop; deallocate prepare stmt; deallocate prepare stmt_drop; end| call p1()| call p1()| drop procedure p1| create procedure p1() begin prepare stmt_drop from "drop table if exists t1"; execute stmt_drop; prepare stmt from "create table t1 (a int)"; execute stmt; deallocate prepare stmt; deallocate prepare stmt_drop; end| drop function if exists f1| create function f1(a int) returns int begin call p1(); return 1; end| select f1(0)| ERROR 0A000: Dynamic SQL is not allowed in stored function or trigger select f1(f1(0))| ERROR 0A000: Dynamic SQL is not allowed in stored function or trigger select f1(f1(f1(0)))| ERROR 0A000: Dynamic SQL is not allowed in stored function or trigger drop function f1| drop procedure p1| create procedure p1() begin drop table if exists t1; create table t1 (id integer not null primary key, name varchar(20) not null); insert into t1 (id, name) values (1, 'aaa'), (2, 'bbb'), (3, 'ccc'); prepare stmt from "select name from t1"; execute stmt; select name from t1; execute stmt; prepare stmt from "select name from t1 where name=(select name from t1 where id=2)"; execute stmt; select name from t1 where name=(select name from t1 where id=2); execute stmt; end| call p1()| name aaa bbb ccc name aaa bbb ccc name aaa bbb ccc name bbb name bbb name bbb call p1()| name aaa bbb ccc name aaa bbb ccc name aaa bbb ccc name bbb name bbb name bbb drop procedure p1| prepare stmt from "select * from t1"| create procedure p1() begin execute stmt; deallocate prepare stmt; end| call p1()| id name 1 aaa 2 bbb 3 ccc call p1()| ERROR HY000: Unknown prepared statement handler (stmt) given to EXECUTE drop procedure p1| create procedure p1() begin declare a char(10); set a="sp-variable"; set @a="mysql-variable"; prepare stmt from "select 'dynamic sql:', @a, a"; execute stmt; end| call p1()| ERROR 42S22: Unknown column 'a' in 'field list' call p1()| ERROR 42S22: Unknown column 'a' in 'field list' drop procedure p1| create procedure p1() begin prepare stmt from 'select ? as a'; execute stmt using @a; end| set @a=1| call p1()| a 1 call p1()| a 1 drop procedure p1| drop table if exists t1| drop table if exists t2| Warnings: Note 1051 Unknown table 'test.t2' create table t1 (id integer primary key auto_increment, stmt_text char(35), status varchar(20))| insert into t1 (stmt_text) values ("select 1"), ("flush tables"), ("handler t1 open as ha"), ("analyze table t1"), ("check table t1"), ("checksum table t1"), ("check table t1"), ("optimize table t1"), ("repair table t1"), ("describe extended select * from t1"), ("help help"), ("show databases"), ("show tables"), ("show table status"), ("show open tables"), ("show storage engines"), ("insert into t1 (id) values (1)"), ("update t1 set status=''"), ("delete from t1"), ("truncate t1"), ("call p1()"), ("foo bar"), ("create view v1 as select 1"), ("alter view v1 as select 2"), ("drop view v1"),("create table t2 (a int)"),("alter table t2 add (b int)"), ("drop table t2")| create procedure p1() begin declare v_stmt_text varchar(255); declare v_id integer; declare done int default 0; declare c cursor for select id, stmt_text from t1; declare continue handler for 1295 -- ER_UNSUPPORTED_PS set @status='not supported'; declare continue handler for 1064 -- ER_SYNTAX_ERROR set @status='syntax error'; declare continue handler for sqlstate '02000' set done = 1; prepare update_stmt from "update t1 set status=? where id=?"; open c; repeat if not done then fetch c into v_id, v_stmt_text; set @id=v_id, @stmt_text=v_stmt_text; set @status="supported"; prepare stmt from @stmt_text; execute update_stmt using @status, @id; end if; until done end repeat; deallocate prepare update_stmt; end| call p1()| select * from t1| id stmt_text status 1 select 1 supported 2 flush tables supported 3 handler t1 open as ha not supported 4 analyze table t1 supported 5 check table t1 not supported 6 checksum table t1 supported 7 check table t1 not supported 8 optimize table t1 supported 9 repair table t1 supported 10 describe extended select * from t1 supported 11 help help not supported 12 show databases supported 13 show tables supported 14 show table status supported 15 show open tables supported 16 show storage engines supported 17 insert into t1 (id) values (1) supported 18 update t1 set status='' supported 19 delete from t1 supported 20 truncate t1 supported 21 call p1() supported 22 foo bar syntax error 23 create view v1 as select 1 supported 24 alter view v1 as select 2 not supported 25 drop view v1 supported 26 create table t2 (a int) supported 27 alter table t2 add (b int) supported 28 drop table t2 supported drop procedure p1| drop table t1| prepare stmt from 'select 1'| create procedure p1() execute stmt| call p1()| 1 1 call p1()| 1 1 drop procedure p1| create function f1() returns int begin deallocate prepare stmt; return 1; end| ERROR 0A000: Dynamic SQL is not allowed in stored function or trigger create procedure p1() begin prepare stmt from 'select 1 A'; execute stmt; end| prepare stmt from 'call p1()'| execute stmt| ERROR HY000: The prepared statement contains a stored routine call that refers to that same statement. It's not allowed to execute a prepared statement in such a recursive manner execute stmt| ERROR HY000: The prepared statement contains a stored routine call that refers to that same statement. It's not allowed to execute a prepared statement in such a recursive manner drop procedure p1| drop table if exists t1, t2| create procedure p1 (a int) language sql deterministic begin declare rsql varchar(100); drop table if exists t1, t2; set @rsql= "create table t1 (a int)"; select @rsql; prepare pst from @rsql; execute pst; set @rsql= null; set @rsql= "create table t2 (a int)"; select @rsql; prepare pst from @rsql; execute pst; drop table if exists t1, t2; end| set @a:=0| call p1(@a)| @rsql create table t1 (a int) @rsql create table t2 (a int) select @a| @a 0 call p1(@a)| @rsql create table t1 (a int) @rsql create table t2 (a int) select @a| @a 0 drop procedure if exists p1|