Server IP : 104.21.38.3 / Your IP : 172.70.208.74 Web Server : Apache System : Linux krdc-ubuntu-s-2vcpu-4gb-amd-blr1-01.localdomain 5.15.0-142-generic #152-Ubuntu SMP Mon May 19 10:54:31 UTC 2025 x86_64 User : www ( 1000) PHP Version : 7.4.33 Disable Function : passthru,exec,system,putenv,chroot,chgrp,chown,shell_exec,popen,proc_open,pcntl_exec,ini_alter,ini_restore,dl,openlog,syslog,readlink,symlink,popepassthru,pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,imap_open,apache_setenv MySQL : OFF | cURL : ON | WGET : ON | Perl : ON | Python : OFF | Sudo : ON | Pkexec : ON Directory : /www/server/mysql/src/mysql-test/suite/sys_vars/r/ |
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** Setup ** SET @session_sql_big_selects = @@SESSION.sql_big_selects; SET @session_max_join_size = @@SESSION.max_join_size; SET @global_max_join_size = @@GLOBAL.max_join_size; SET MAX_JOIN_SIZE=9; CREATE TEMPORARY TABLE t1(a varchar(20) not null, b varchar(20)); CREATE TEMPORARY TABLE t2(a varchar(20) null, b varchar(20)); INSERT INTO t1 VALUES('aa','bb'); INSERT INTO t1 VALUES('aa1','bb'); INSERT INTO t1 VALUES('aa2','bb'); INSERT INTO t1 VALUES('aa3','bb'); INSERT INTO t1 VALUES('aa4','bb'); INSERT INTO t2 VALUES('aa','bb'); INSERT INTO t2 VALUES('aa1','bb'); INSERT INTO t2 VALUES('aa2','bb'); INSERT INTO t2 VALUES('aa3','bb'); INSERT INTO t2 VALUES('aa4','bb'); '#--------------------FN_DYNVARS_154_01-------------------------#' Expected error "Too big select" SELECT * FROM t1 INNER JOIN t2 ON t1.a = t2.a; ERROR 42000: The SELECT would examine more than MAX_JOIN_SIZE rows; check your WHERE and use SET SQL_BIG_SELECTS=1 or SET MAX_JOIN_SIZE=# if the SELECT is okay Expected error The SELECT would examine more than MAX_JOIN_SIZE rows. '#--------------------FN_DYNVARS_154_02-------------------------#' SET SESSION SQL_BIG_SELECTS = 1; SELECT * FROM t1 INNER JOIN t2 ON t1.a = t2.a; a b a b aa bb aa bb aa1 bb aa1 bb aa2 bb aa2 bb aa3 bb aa3 bb aa4 bb aa4 bb This should work SET SESSION SQL_BIG_SELECTS = 0; DELETE FROM t2 WHERE a = 'aa4'; SELECT * FROM t1 INNER JOIN t2 ON t1.a = t2.a; a b a b aa bb aa bb aa1 bb aa1 bb aa2 bb aa2 bb aa3 bb aa3 bb This should work '#--------------------FN_DYNVARS_154_03-------------------------#' ** Connecting con_int1 using root ** ** Connection con_int1 ** SELECT @@SESSION.sql_big_selects; @@SESSION.sql_big_selects 1 1 Expected SET SESSION sql_big_selects = 0; ** Connecting con_int2 using root ** ** Connection con_int2 ** SELECT @@SESSION.sql_big_selects; @@SESSION.sql_big_selects 1 1 Expected SET SESSION sql_big_selects = 1; ** Connection con_int1 ** SELECT @@SESSION.sql_big_selects; @@SESSION.sql_big_selects 0 0 Expected ** Connection con_int2 ** SELECT @@SESSION.sql_big_selects; @@SESSION.sql_big_selects 1 1 Expected ** Connection default ** Disconnecting Connections con_int1, con_int2 SET @@SESSION.sql_big_selects = @session_sql_big_selects; SET @@SESSION.max_join_size = @session_max_join_size; SET @@GLOBAL.max_join_size = @global_max_join_size; DROP TABLE t1; DROP TABLE t2;