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############## mysql-test\t\max_allowed_packet_basic.test ############### # # # Variable Name: max_allowed_packet # # Scope: GLOBAL | SESSION # # Access Type: Dynamic # # Data Type: numeric # # Default Value:4194304 # # Range:1024-1073741824 # # # # # # Creation Date: 2008-02-07 # # Author: Salman # # # # Description: Test Cases of Dynamic System Variable max_allowed_packet # # 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 max_allowed_packet TESTS # ################################################################## ############################################################# # Save initial value # ############################################################# SET @start_global_value = @@global.max_allowed_packet; SELECT @start_global_value; # give a known value to @@session.max_allowed_packet by assigning to # @@global and setting up a new connection (for deterministic result # file diffing) SET @@global.max_allowed_packet = DEFAULT; connect (conn1, localhost, root,,); --echo '#--------------------FN_DYNVARS_070_01-------------------------#' ################################################################## # Display the DEFAULT value of max_allowed_packet # ################################################################## SET @@global.max_allowed_packet = 1000; SET @@global.max_allowed_packet = DEFAULT; SELECT @@global.max_allowed_packet; --Error ER_VARIABLE_IS_READONLY SET @@session.max_allowed_packet = 20000; --Error ER_VARIABLE_IS_READONLY SET @@session.max_allowed_packet = DEFAULT; SELECT @@session.max_allowed_packet; --echo '#--------------------FN_DYNVARS_070_02-------------------------#' ################################################################## # Check the DEFAULT value of max_allowed_packet # ################################################################## SET @@global.max_allowed_packet = DEFAULT; SELECT @@global.max_allowed_packet = 4194304; --echo '#--------------------FN_DYNVARS_070_03-------------------------#' ############################################################################ # Change the value of max_allowed_packet to a valid value for GLOBAL Scope # ############################################################################ SET @@global.max_allowed_packet = 1024; SELECT @@global.max_allowed_packet; SET @@global.max_allowed_packet = 1025; SELECT @@global.max_allowed_packet; SET @@global.max_allowed_packet = 1073741824; SELECT @@global.max_allowed_packet; SET @@global.max_allowed_packet = 1073741823; SELECT @@global.max_allowed_packet; --echo '#--------------------FN_DYNVARS_070_04-------------------------#' ############################################################################# # Change the value of max_allowed_packet to a valid value for SESSION Scope # ############################################################################# --Error ER_VARIABLE_IS_READONLY SET @@session.max_allowed_packet = 1024; SELECT @@session.max_allowed_packet; --Error ER_VARIABLE_IS_READONLY SET @@session.max_allowed_packet = 1025; SELECT @@session.max_allowed_packet; --Error ER_VARIABLE_IS_READONLY SET @@session.max_allowed_packet = 65535; SELECT @@session.max_allowed_packet; --Error ER_VARIABLE_IS_READONLY SET @@session.max_allowed_packet = 1073741824; SELECT @@session.max_allowed_packet; --Error ER_VARIABLE_IS_READONLY SET @@session.max_allowed_packet = 1073741823; SELECT @@session.max_allowed_packet; --echo '#------------------FN_DYNVARS_070_05-----------------------#' ############################################################## # Change the value of max_allowed_packet to an invalid value # ############################################################## SET @@global.max_allowed_packet = 0; SELECT @@global.max_allowed_packet; SET @@global.max_allowed_packet = -1024; SELECT @@global.max_allowed_packet; SET @@global.max_allowed_packet = 1023; SELECT @@global.max_allowed_packet; SET @@global.max_allowed_packet = 10737418241; SELECT @@global.max_allowed_packet; SET @@global.max_allowed_packet = 1073741826; SELECT @@global.max_allowed_packet; --Error ER_WRONG_TYPE_FOR_VAR SET @@global.max_allowed_packet = 65530.34; SELECT @@global.max_allowed_packet; --Error ER_WRONG_TYPE_FOR_VAR SET @@global.max_allowed_packet = test; SELECT @@global.max_allowed_packet; --Error ER_WRONG_TYPE_FOR_VAR SET @@global.max_allowed_packet = ' '; SELECT @@global.max_allowed_packet; --Error ER_VARIABLE_IS_READONLY SET @@session.max_allowed_packet = 0; SELECT @@session.max_allowed_packet; --Error ER_VARIABLE_IS_READONLY SET @@session.max_allowed_packet = 1023; SELECT @@session.max_allowed_packet; --Error ER_VARIABLE_IS_READONLY SET @@session.max_allowed_packet = -2; SELECT @@session.max_allowed_packet; --Error ER_WRONG_TYPE_FOR_VAR SET @@session.max_allowed_packet = 65530.34; --Error ER_VARIABLE_IS_READONLY SET @@session.max_allowed_packet = 10737418241; SELECT @@session.max_allowed_packet; --Error ER_WRONG_TYPE_FOR_VAR SET @@session.max_allowed_packet = test; SELECT @@session.max_allowed_packet; --Error ER_WRONG_TYPE_FOR_VAR SET @@session.max_allowed_packet = ' '; SELECT @@session.max_allowed_packet; --echo '#------------------FN_DYNVARS_070_06-----------------------#' #################################################################### # Check if the value in GLOBAL Table matches value in variable # #################################################################### --disable_warnings SELECT @@global.max_allowed_packet = VARIABLE_VALUE FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME='max_allowed_packet'; --enable_warnings --echo '#------------------FN_DYNVARS_070_07-----------------------#' #################################################################### # Check if the value in SESSION Table matches value in variable # #################################################################### --disable_warnings SELECT @@session.max_allowed_packet = VARIABLE_VALUE FROM INFORMATION_SCHEMA.SESSION_VARIABLES WHERE VARIABLE_NAME='max_allowed_packet'; --enable_warnings --echo '#------------------FN_DYNVARS_070_08-----------------------#' #################################################################### # Check if TRUE and FALSE values can be used on variable # #################################################################### SET @@global.max_allowed_packet = TRUE; SELECT @@global.max_allowed_packet; SET @@global.max_allowed_packet = FALSE; SELECT @@global.max_allowed_packet; --echo '#---------------------FN_DYNVARS_070_09----------------------#' ################################################################################# # Check if accessing variable with and without GLOBAL point to same variable # ################################################################################# SET @@global.max_allowed_packet = 2048; SELECT @@max_allowed_packet = @@global.max_allowed_packet; --echo '#---------------------FN_DYNVARS_070_10----------------------#' ######################################################################################################## # Check if accessing variable with SESSION,LOCAL and without SCOPE points to same session variable # ######################################################################################################## --Error ER_VARIABLE_IS_READONLY SET @@max_allowed_packet = 100000; SELECT @@max_allowed_packet = @@local.max_allowed_packet; SELECT @@local.max_allowed_packet = @@session.max_allowed_packet; --echo '#---------------------FN_DYNVARS_070_11----------------------#' ############################################################################# # Check if max_allowed_packet can be accessed with and without @@ sign # ############################################################################# --Error ER_VARIABLE_IS_READONLY SET max_allowed_packet = 1024; SELECT @@max_allowed_packet; --Error ER_UNKNOWN_TABLE SELECT local.max_allowed_packet; --Error ER_UNKNOWN_TABLE SELECT session.max_allowed_packet; --Error ER_BAD_FIELD_ERROR SELECT max_allowed_packet = @@session.max_allowed_packet; #################################### # Restore initial value # #################################### connection default; SET @@global.max_allowed_packet = @start_global_value; SELECT @@global.max_allowed_packet; SELECT @@session.max_allowed_packet; ####################################################### # END OF max_allowed_packet TESTS # #######################################################