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######### mysql-test\t\table_open_cache_instances_basic.test ################## # # # Variable Name: table_open_cache_instances # # Scope: Global # # Access Type: Static # # Data Type: Integer # # # # # # Creation Date: 2012-04-25 # # Author : Mikael Ronstrom # # # # # # # # Description: # # Test case for static system variable table_open_cache_instances, # # Checks the behavior of this variable in the following ways: # # * Value Check # # * Scope Check # # # # # ############################################################################### --echo #################################################################### --echo # Displaying default value # --echo #################################################################### SELECT @@GLOBAL.table_open_cache_instances; --echo #################################################################### --echo # Check that value cannot be set (this variable is settable only # --echo # at start-up). # --echo #################################################################### --error ER_INCORRECT_GLOBAL_LOCAL_VAR SET @@GLOBAL.table_open_cache_instances=1; SELECT @@GLOBAL.table_open_cache_instances; --echo ################################################################# --echo # Check if the value in GLOBAL Table matches value in variable # --echo ################################################################# --disable_warnings SELECT @@GLOBAL.table_open_cache_instances = VARIABLE_VALUE FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME='table_open_cache_instances'; --enable_warnings SELECT @@GLOBAL.table_open_cache_instances; --disable_warnings SELECT VARIABLE_VALUE FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME='table_open_cache_instances'; --enable_warnings --echo ###################################################################### --echo # Check if accessing variable with and without GLOBAL point to same # --echo # variable # --echo ###################################################################### SELECT @@table_open_cache_instances = @@GLOBAL.table_open_cache_instances; --echo ###################################################################### --echo # Check if variable has only the GLOBAL scope # --echo ###################################################################### SELECT @@table_open_cache_instances; SELECT @@GLOBAL.table_open_cache_instances; --error ER_INCORRECT_GLOBAL_LOCAL_VAR SELECT @@local.table_open_cache_instances; --error ER_INCORRECT_GLOBAL_LOCAL_VAR SELECT @@SESSION.table_open_cache_instances;