| Server IP : 172.67.216.182 / Your IP : 172.70.189.104 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/perfschema/r/ |
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select @@global.show_compatibility_56 into @show_compatibility_56_save;
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SHOW_COMPATIBILITY_56 = ON
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set global show_compatibility_56 = on;
select 1;
1
1
SHOW STATUS LIKE 'Last_query_partial_plans';
Variable_name Value
Last_query_partial_plans 0
select 2;
2
2
SHOW STATUS LIKE 'Last_query_cost';
Variable_name Value
Last_query_cost 0.000000
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SHOW_COMPATIBILITY_56 = OFF
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set global show_compatibility_56 = off;
select 1;
1
1
SHOW STATUS LIKE 'Last_query_partial_plans';
Variable_name Value
Last_query_partial_plans 0
select 2;
2
2
SHOW STATUS LIKE 'Last_query_cost';
Variable_name Value
Last_query_cost 0.000000
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SHOW_COMPATIBILITY_56 = ON
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flush status;
set global show_compatibility_56 = on;
SHOW STATUS LIKE 'Created_tmp_tables';
Variable_name Value
Created_tmp_tables 0
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SHOW_COMPATIBILITY_56 = OFF
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set global show_compatibility_56 = off;
SHOW STATUS LIKE 'Created_tmp_tables';
Variable_name Value
Created_tmp_tables 0
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Bug#21789221 SHOW STATUS FAILS WITH LOCK TABLES AND SHOW_COMPATIBILITY_56=OFF
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Verify that SHOW STATUS and SHOW VARIABLES works under LOCK TABLES mode
CREATE TABLE test.t1 (s1 INT);
LOCK TABLE test.t1 READ;
SHOW GLOBAL STATUS WHERE VARIABLE_NAME LIKE "foo";
Variable_name Value
SHOW SESSION STATUS WHERE VARIABLE_NAME LIKE "foo";
Variable_name Value
SHOW GLOBAL VARIABLES WHERE VARIABLE_NAME LIKE "foo";
Variable_name Value
SHOW SESSION VARIABLES WHERE VARIABLE_NAME LIKE "foo";
Variable_name Value
UNLOCK TABLES;
LOCK TABLE test.t1 WRITE;
SHOW GLOBAL STATUS WHERE VARIABLE_NAME LIKE "foo";
Variable_name Value
SHOW SESSION STATUS WHERE VARIABLE_NAME LIKE "foo";
Variable_name Value
SHOW GLOBAL VARIABLES WHERE VARIABLE_NAME LIKE "foo";
Variable_name Value
SHOW SESSION VARIABLES WHERE VARIABLE_NAME LIKE "foo";
Variable_name Value
UNLOCK TABLES;
DROP TABLE test.t1;
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Bug#28515475 BOGUS DATA WHEN ORDERING RESULTS FROM VARIABLES_BY_THREAD
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Verify the results from "WHERE variable_name IN(...)", particularly for those
variables that are listed after the deprecated variable gtid_executed.
The ORDER BY also forces an additional code path through rnd_pos().
SELECT variable_name FROM performance_schema.variables_by_thread
WHERE variable_name IN ('interactive_timeout','net_read_timeout','net_write_timeout','wait_timeout')
ORDER BY variable_name;
variable_name
interactive_timeout
net_read_timeout
net_write_timeout
wait_timeout
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CLEAN UP
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set @@global.show_compatibility_56 = @show_compatibility_56_save;