Server IP : 172.67.216.182 / Your IP : 162.158.88.156 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/t/ |
Upload File : |
################################################################################ # # # Variable Name: sql_low_priority_updates # # Scope: GLOBAL & SESSION # # Access Type: Dynamic # # Data Type: BOOLEAN # # Default Value: 1 TRUE # # Values: 1 TRUE, 0 FALSE # # # # # # Creation Date: 2008-02-25 # # Author: Sharique Abdullah # # # # Description: Test Cases of Dynamic System Variable sql_low_priority_updates # # that checks behavior of this variable in the following ways # # * Functionality based on different values # # # # Reference: http://dev.mysql.com/doc/refman/5.1/en/set-option.html # # # ################################################################################ --source include/not_embedded.inc --source include/force_myisam_default.inc ################################################################ # sql_low_priority_updates was renamed to low_priority_updates # ################################################################ --echo ** Setup ** --echo # # Setup # --echo ** Connecting con0 using root ** connect (con0,localhost,root,,); --echo ** Connecting con1 using root ** connect (con1,localhost,root,,); --echo ** Connection default ** connection default; SET @global_low_priority_updates = @@GLOBAL.low_priority_updates; SET @session_low_priority_updates = @@SESSION.low_priority_updates; # # Create Table # CREATE TABLE t1 (a varchar(100)); create view v1 as select * from t1; --echo '#--------------------FN_DYNVARS_160_01-------------------------#' # # Value ON # --echo ** Connection con0 ** connection con0; SET SESSION low_priority_updates = ON; --echo ** Connection con1 ** connection con1; SET SESSION low_priority_updates = ON; --echo ** Connection default ** connection default; SET SESSION low_priority_updates = ON; INSERT INTO t1 VALUES('1'); INSERT INTO t1 VALUES('2'); INSERT INTO t1 VALUES('3'); INSERT INTO t1 VALUES('4'); INSERT INTO t1 VALUES('5'); INSERT INTO t1 VALUES('6'); LOCK TABLE v1 WRITE; --echo ** Connection con1 ** connection con1; --echo ** Asynchronous Execution ** delimiter |; send UPDATE t1 SET a = CONCAT(a,"-updated");| delimiter ;| --echo ** Connection con0 ** connection con0; let $wait_condition = SELECT COUNT(*) > 0 FROM information_schema.processlist WHERE state='Waiting for table metadata lock' AND info LIKE 'UPDATE t1 SET a = CONCAT(a,"-updated")'; --source include/wait_condition.inc --echo ** Asynchronous Execution ** delimiter |; send LOCK TABLE t1 READ; SELECT * FROM t1; UNLOCK TABLES;| delimiter ;| --echo ** Connection default ** connection default; let $wait_condition= SELECT count(*) = 2 FROM information_schema.processlist WHERE state LIKE 'Waiting for table metadata lock'; --source include/wait_condition.inc UNLOCK TABLES; --echo ** Connection con0 ** connection con0; --echo ** Asynchronous Result ** reap; --echo Expected values of a without -updated; --echo ** Connection default ** connection default; DELETE FROM t1; --echo '#--------------------FN_DYNVARS_160_02-------------------------#' # # Value ON # --echo ** Connection con0 ** connection con0; SET SESSION low_priority_updates = OFF; --echo ** Connection con1 ** connection con1; reap; SET SESSION low_priority_updates = OFF; --echo ** Connection default** connection default; SET SESSION low_priority_updates = OFF; INSERT INTO t1 VALUES('1'); INSERT INTO t1 VALUES('2'); INSERT INTO t1 VALUES('3'); INSERT INTO t1 VALUES('4'); INSERT INTO t1 VALUES('5'); INSERT INTO t1 VALUES('6'); LOCK TABLE v1 WRITE; --echo ** Connection con1 ** connection con1; --echo ** Asynchronous Execution ** delimiter |; send UPDATE t1 SET a = CONCAT(a,"-updated");| delimiter ;| --echo ** Connection con0 ** connection con0; let $wait_condition = SELECT COUNT(*) > 0 FROM information_schema.processlist WHERE state='Waiting for table metadata lock' AND info LIKE 'UPDATE t1 SET a = CONCAT(a,"-updated")'; --source include/wait_condition.inc --echo ** Asynchronous Execution ** delimiter |; send LOCK TABLE t1 READ; SELECT * FROM t1; UNLOCK TABLES;| delimiter ;| --echo ** Connection default ** connection default; let $wait_condition= SELECT count(*) = 2 FROM information_schema.processlist WHERE state LIKE 'Waiting for table metadata lock'; --source include/wait_condition.inc UNLOCK TABLES; --echo ** Connection con0 ** connection con0; --echo ** Asynchronous Result ** reap; --echo Expected values of a with -updated; --echo ** Connection default** connection default; DELETE FROM t1; --echo '#--------------------FN_DYNVARS_160_03-------------------------#' # # Session data integrity check & GLOBAL Value check # --echo ** Connecting con_int1 using root ** connect (con_int1,localhost,root,,); --echo ** Connection con_int1 ** connection con_int1; SELECT @@SESSION.low_priority_updates; --echo 1 / TRUE Expected SET SESSION low_priority_updates = FALSE; --echo ** Connecting con_int2 using root ** connect (con_int2,localhost,root,,); --echo ** Connection con_int2 ** connection con_int2; SELECT @@SESSION.low_priority_updates; --echo 1 / TRUE Expected SET SESSION low_priority_updates = TRUE; --echo ** Connection con_int1 ** connection con_int1; SELECT @@SESSION.low_priority_updates; --echo 0 / FALSE Expected --echo ** Connection con_int2 ** connection con_int2; SELECT @@SESSION.low_priority_updates; --echo 1 / TRUE Expected --echo ** Connection default ** connection default; --echo Disconnecting Connections con_int1, con_int2 disconnect con_int1; disconnect con_int2; # # Cleanup # --echo ** Connection default ** connection default; --echo Disconnecting Connections con0, con1 disconnect con0; disconnect con1; drop view v1; DROP TABLE t1; SET @@GLOBAL.low_priority_updates = @global_low_priority_updates; SET @@SESSION.low_priority_updates = @session_low_priority_updates;