Current File : //usr/share/mysql-test/suite/sys_vars/inc/min_examined_row_limit_basic.inc
############## mysql-test\t\min_examined_row_limit_basic.test ###############
# #
# Variable Name: min_examined_row_limit #
# Scope: GLOBAL | SESSION #
# Access Type: Dynamic #
# Data Type: numeric #
# Default Value: 0 #
# Range:0-4294967295 #
# #
# #
# Creation Date: 2008-02-07 #
# Author: Salman #
# #
# Description: Test Cases of Dynamic System Variable min_examined_row_limit #
# that checks the behavior of this variable in the following ways#
# * Default Value #
# * Valid & Invalid values #
# * Scope & Access method #
# * Data Integrity #
# #
# Reference: http://dev.mysql.com/doc/refman/5.1/en/ #
# server-system-variables.html #
# #
###############################################################################
--source include/load_sysvars.inc
######################################################################
# START OF min_examined_row_limit TESTS #
######################################################################
#############################################################
# Save initial value #
#############################################################
SET @start_global_value = @@global.min_examined_row_limit;
SELECT @start_global_value;
SET @start_session_value = @@session.min_examined_row_limit;
SELECT @start_session_value;
--echo '#--------------------FN_DYNVARS_089_01-------------------------#'
######################################################################
# Display the DEFAULT value of min_examined_row_limit #
######################################################################
SET @@global.min_examined_row_limit = 100;
SET @@global.min_examined_row_limit = DEFAULT;
SELECT @@global.min_examined_row_limit;
SET @@session.min_examined_row_limit = 200;
SET @@session.min_examined_row_limit = DEFAULT;
SELECT @@session.min_examined_row_limit;
--echo '#--------------------FN_DYNVARS_089_02-------------------------#'
########################################################################
# Check the DEFAULT value of min_examined_row_limit #
########################################################################
SET @@global.min_examined_row_limit = DEFAULT;
SELECT @@global.min_examined_row_limit = 0;
SET @@session.min_examined_row_limit = DEFAULT;
SELECT @@session.min_examined_row_limit = 0;
--echo '#--------------------FN_DYNVARS_089_03-------------------------#'
################################################################################
# Change the value of min_examined_row_limit to a valid value for GLOBAL Scope #
################################################################################
SET @@global.min_examined_row_limit = 0;
SELECT @@global.min_examined_row_limit;
SET @@global.min_examined_row_limit = 1;
SELECT @@global.min_examined_row_limit;
SET @@global.min_examined_row_limit = 60020;
SELECT @@global.min_examined_row_limit;
SET @@global.min_examined_row_limit = 65535;
SELECT @@global.min_examined_row_limit;
SET @@global.min_examined_row_limit = 4294967295;
SELECT @@global.min_examined_row_limit;
SET @@global.min_examined_row_limit = 4294967294;
SELECT @@global.min_examined_row_limit;
--echo '#--------------------FN_DYNVARS_089_04-------------------------#'
###################################################################################
# Change the value of min_examined_row_limit to a valid value for SESSION Scope #
###################################################################################
SET @@session.min_examined_row_limit = 0;
SELECT @@session.min_examined_row_limit;
SET @@session.min_examined_row_limit = 1;
SELECT @@session.min_examined_row_limit;
SET @@session.min_examined_row_limit = 50050;
SELECT @@session.min_examined_row_limit;
SET @@session.min_examined_row_limit = 65535;
SELECT @@session.min_examined_row_limit;
SET @@session.min_examined_row_limit = 4294967295;
SELECT @@session.min_examined_row_limit;
SET @@session.min_examined_row_limit = 4294967294;
SELECT @@session.min_examined_row_limit;
--echo '#------------------FN_DYNVARS_089_05-----------------------#'
####################################################################
# Change the value of min_examined_row_limit to an invalid value #
####################################################################
SET @@global.min_examined_row_limit = 429496726;
SELECT @@global.min_examined_row_limit;
SET @@global.min_examined_row_limit = -1024;
SELECT @@global.min_examined_row_limit;
SET @@global.min_examined_row_limit = 429496729500;
SELECT @@global.min_examined_row_limit;
--Error ER_WRONG_TYPE_FOR_VAR
SET @@global.min_examined_row_limit = 65530.34;
SELECT @@global.min_examined_row_limit;
--Error ER_WRONG_TYPE_FOR_VAR
SET @@global.min_examined_row_limit = test;
SELECT @@global.min_examined_row_limit;
SET @@session.min_examined_row_limit = 4294967296;
SELECT @@session.min_examined_row_limit;
SET @@session.min_examined_row_limit = -1;
SELECT @@session.min_examined_row_limit;
--Error ER_WRONG_TYPE_FOR_VAR
SET @@session.min_examined_row_limit = 65530.34;
SET @@session.min_examined_row_limit = 4294967295021;
SELECT @@session.min_examined_row_limit;
--Error ER_WRONG_TYPE_FOR_VAR
SET @@session.min_examined_row_limit = test;
SELECT @@session.min_examined_row_limit;
--echo '#------------------FN_DYNVARS_089_06-----------------------#'
####################################################################
# Check if the value in GLOBAL Table matches value in variable #
####################################################################
SELECT @@global.min_examined_row_limit = VARIABLE_VALUE
FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES
WHERE VARIABLE_NAME='min_examined_row_limit';
--echo '#------------------FN_DYNVARS_089_07-----------------------#'
####################################################################
# Check if the value in SESSION Table matches value in variable #
####################################################################
SELECT @@session.min_examined_row_limit = VARIABLE_VALUE
FROM INFORMATION_SCHEMA.SESSION_VARIABLES
WHERE VARIABLE_NAME='min_examined_row_limit';
--echo '#------------------FN_DYNVARS_089_08-----------------------#'
####################################################################
# Check if TRUE and FALSE values can be used on variable #
####################################################################
SET @@global.min_examined_row_limit = TRUE;
SELECT @@global.min_examined_row_limit;
SET @@global.min_examined_row_limit = FALSE;
SELECT @@global.min_examined_row_limit;
--echo '#---------------------FN_DYNVARS_089_09----------------------#'
####################################################################################
# Check if accessing variable with and without GLOBAL point to same variable #
####################################################################################
SET @@global.min_examined_row_limit = 10;
SELECT @@min_examined_row_limit = @@global.min_examined_row_limit;
--echo '#---------------------FN_DYNVARS_089_10----------------------#'
########################################################################################################
# Check if accessing variable with SESSION,LOCAL and without SCOPE points to same session variable #
########################################################################################################
SET @@min_examined_row_limit = 100;
SELECT @@min_examined_row_limit = @@local.min_examined_row_limit;
SELECT @@local.min_examined_row_limit = @@session.min_examined_row_limit;
--echo '#---------------------FN_DYNVARS_089_11----------------------#'
###################################################################################
# Check if min_examined_row_limit can be accessed with and without @@ sign #
###################################################################################
SET min_examined_row_limit = 1;
SELECT @@min_examined_row_limit;
--Error ER_UNKNOWN_TABLE
SELECT local.min_examined_row_limit;
--Error ER_UNKNOWN_TABLE
SELECT session.min_examined_row_limit;
--Error ER_BAD_FIELD_ERROR
SELECT min_examined_row_limit = @@session.min_examined_row_limit;
####################################
# Restore initial value #
####################################
SET @@global.min_examined_row_limit = @start_global_value;
SELECT @@global.min_examined_row_limit;
SET @@session.min_examined_row_limit = @start_session_value;
SELECT @@session.min_examined_row_limit;
#############################################################
# END OF min_examined_row_limit TESTS #
#############################################################
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