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############## 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 # #################################################################### --disable_warnings SELECT @@global.min_examined_row_limit = VARIABLE_VALUE FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME='min_examined_row_limit'; --enable_warnings --echo '#------------------FN_DYNVARS_089_07-----------------------#' #################################################################### # Check if the value in SESSION Table matches value in variable # #################################################################### --disable_warnings SELECT @@session.min_examined_row_limit = VARIABLE_VALUE FROM INFORMATION_SCHEMA.SESSION_VARIABLES WHERE VARIABLE_NAME='min_examined_row_limit'; --enable_warnings --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 # #############################################################