| Server IP : 104.21.38.3 / Your IP : 172.71.124.154 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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set @v1a="Hello";
set @v2a="World";
set @v3a=65;
set @v4a=NULL;
select @v1a, @v2a, @v3a, @v4a, @v_unknown;
@v1a @v2a @v3a @v4a @v_unknown
Hello World 65 NULL NULL
select VARIABLE_NAME, VARIABLE_VALUE
from performance_schema.user_variables_by_thread
order by VARIABLE_NAME;
VARIABLE_NAME VARIABLE_VALUE
v1a Hello
v2a World
v3a 65
v4a NULL
set @v1b="Salut";
set @v2b="La compagnie";
set @v3b=12;
set @v4b=NULL;
select @v1b, @v2b, @v3b, @v4b, @v_unknown;
@v1b @v2b @v3b @v4b @v_unknown
Salut La compagnie 12 NULL NULL
select VARIABLE_NAME, VARIABLE_VALUE
from performance_schema.user_variables_by_thread
order by VARIABLE_NAME;
VARIABLE_NAME VARIABLE_VALUE
v1a Hello
v1b Salut
v2a World
v2b La compagnie
v3a 65
v3b 12
v4a NULL
v4b NULL
select VARIABLE_NAME, VARIABLE_VALUE
from performance_schema.user_variables_by_thread
order by VARIABLE_NAME;
VARIABLE_NAME VARIABLE_VALUE
v1a Hello
v2a World
v3a 65
v4a NULL
set @blob_under_16_bits=repeat("a", 65000);
set @blob_under_24_bits=repeat("a", 1000000);
select length(@blob_under_16_bits);
length(@blob_under_16_bits)
65000
select length(@blob_under_24_bits);
length(@blob_under_24_bits)
1000000
select variable_name, length(variable_value)
from performance_schema.user_variables_by_thread
where VARIABLE_NAME like "blob%"
order by VARIABLE_NAME;
variable_name length(variable_value)
blob_under_16_bits 65000
blob_under_24_bits 1000000
set @a=10;
CREATE procedure test_user_val
(IN input INT,OUT output INT)
BEGIN
SELECT input + input
INTO output;
END|
CALL test_user_val(@a , @total);
select VARIABLE_NAME,VARIABLE_VALUE from performance_schema.user_variables_by_thread
where variable_name in ('a','total') order by VARIABLE_NAME;
VARIABLE_NAME VARIABLE_VALUE
a 10
total 20
create table t1 (c1 int);
CREATE TRIGGER test_uvar_trigger
AFTER INSERT ON t1
FOR EACH ROW BEGIN
set @a=@a+@a;
END|
insert into t1 values(1);
select VARIABLE_NAME,VARIABLE_VALUE from performance_schema.user_variables_by_thread
where variable_name ='a' order by VARIABLE_NAME;
VARIABLE_NAME VARIABLE_VALUE
a 20
insert into t1 values(1);
select VARIABLE_NAME,VARIABLE_VALUE from performance_schema.user_variables_by_thread
where variable_name ='a' order by VARIABLE_NAME;
VARIABLE_NAME VARIABLE_VALUE
a 40
drop table t1;
drop procedure test_user_val;