403Webshell
Server IP : 104.21.38.3  /  Your IP : 172.69.176.122
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 :
current_dir [ Writeable ] document_root [ Writeable ]

 

Command :


[ Back ]     

Current File : /www/server/mysql/src/mysql-test/suite/sys_vars/t/max_seeks_for_key_func.test
# Test for max_seeks_for_key #

--disable_warnings
DROP TABLE IF EXISTS t1;
--enable_warnings


#########################
#   Creating new table  #
#########################

CREATE TABLE t1
(a INT AUTO_INCREMENT PRIMARY KEY,
b CHAR(20)
);

SET @start_value= @@global.max_seeks_for_key;

--echo '#--------------------FN_DYNVARS_084_01-------------------------#'
##########################################################
#    Test behavior of variable on new connection # 01    #
##########################################################

CONNECT (test_con1,localhost,root,,);
CONNECTION test_con1;

# Value of session & global vairable here should be 10
SELECT @@global.max_seeks_for_key = 10;
SELECT @@session.max_seeks_for_key = 10;

# Setting global value of variable and inserting data in table
SET @@global.max_seeks_for_key = 20;
SELECT @@global.max_seeks_for_key;
INSERT INTO t1(b) VALUES("AREc");
--replace_column 10 # 11 #
EXPLAIN SELECT STRAIGHT_JOIN * FROM t1,t1 AS t2 WHERE t1.b = t2.b;

# Setting session value of variable and inserting data in table
SET @@session.max_seeks_for_key = 2;
SELECT @@session.max_seeks_for_key;
INSERT INTO t1(b) VALUES("BREc");
INSERT INTO t1(b) VALUES("CRec");
--replace_column 10 # 11 #
EXPLAIN SELECT STRAIGHT_JOIN * FROM t1,t1 AS t2 WHERE t1.b = t2.b;


--echo '#--------------------FN_DYNVARS_084_02-------------------------#'
##########################################################
#    Test behavior of variable on new connection # 02    #
##########################################################


CONNECT (test_con2,localhost,root,,);
connection test_con2;


# Value of session & global vairable here should be 10
SELECT @@global.max_seeks_for_key = 10;
SELECT @@session.max_seeks_for_key = 10;

# Setting global value of variable and inserting data in table
SET @@global.max_seeks_for_key = 20;
SELECT @@global.max_seeks_for_key;
INSERT INTO t1(b) VALUES("AREc");
--replace_column 10 # 11 #
EXPLAIN SELECT STRAIGHT_JOIN * FROM t1,t1 AS t2 WHERE t1.b = t2.b;

# Setting session value of variable and inserting data in table
SET @@session.max_seeks_for_key = 2;
SELECT @@session.max_seeks_for_key;
INSERT INTO t1(b) VALUES("BREc");
INSERT INTO t1(b) VALUES("CRec");
--replace_column 10 # 11 #
EXPLAIN SELECT STRAIGHT_JOIN * FROM t1,t1 AS t2 WHERE t1.b = t2.b;

######################################################
#   Inserting values in  table t and analyzing table #
######################################################

INSERT INTO t1 VALUES(null,"test");
INSERT INTO t1 VALUES (null,"a"),(null,"a"),(null,"a"),
                     (null,"a"),(null,"a"),(null,"a"),(null,"a"),
                     (null,"a"),(null,"a"),(null,"a");
--replace_column 10 # 11 #
EXPLAIN SELECT STRAIGHT_JOIN * FROM t1,t1 AS t2 WHERE t1.b = t2.b;
ANALYZE TABLE t1;

###################################################################
#   Setting new value for max_seeks_for_key and anaylyzing table  #
###################################################################

SET MAX_SEEKS_FOR_KEY=1;

--replace_column 10 # 11 #
EXPLAIN SELECT STRAIGHT_JOIN * FROM t1,t1 AS t2 WHERE t1.b = t2.b;
SET MAX_SEEKS_FOR_KEY=DEFAULT;

connection default;
disconnect test_con1;
disconnect test_con2;

DROP TABLE t1;

SET @@global.max_seeks_for_key= @start_value;


Youez - 2016 - github.com/yon3zu
LinuXploit