SET @start_value = @@global.table_definition_cache; SELECT @start_value; @start_value 256 '#--------------------FN_DYNVARS_019_01------------------------#' SET @@global.table_definition_cache = 100; Warnings: Warning 1292 Truncated incorrect table_definition_cache value: '100' SET @@global.table_definition_cache = DEFAULT; SELECT @@global.table_definition_cache; @@global.table_definition_cache 256 '#---------------------FN_DYNVARS_019_02-------------------------#' SET @@global.table_definition_cache = DEFAULT; SELECT @@global.table_definition_cache = 128; @@global.table_definition_cache = 128 0 '#--------------------FN_DYNVARS_019_03------------------------#' SET @@global.table_definition_cache = 1; Warnings: Warning 1292 Truncated incorrect table_definition_cache value: '1' SELECT @@global.table_definition_cache; @@global.table_definition_cache 256 SET @@global.table_definition_cache = 2; Warnings: Warning 1292 Truncated incorrect table_definition_cache value: '2' SELECT @@global.table_definition_cache; @@global.table_definition_cache 256 SET @@global.table_definition_cache = 524287; SELECT @@global.table_definition_cache; @@global.table_definition_cache 524287 SET @@global.table_definition_cache = 524288; SELECT @@global.table_definition_cache; @@global.table_definition_cache 524288 '#--------------------FN_DYNVARS_019_04-------------------------#' SET @@global.table_definition_cache = 0; Warnings: Warning 1292 Truncated incorrect table_definition_cache value: '0' SELECT @@global.table_definition_cache; @@global.table_definition_cache 256 SET @@global.table_definition_cache = -1024; Warnings: Warning 1292 Truncated incorrect table_definition_cache value: '0' SELECT @@global.table_definition_cache; @@global.table_definition_cache 256 SET @@global.table_definition_cache = 524289; Warnings: Warning 1292 Truncated incorrect table_definition_cache value: '524289' SELECT @@global.table_definition_cache; @@global.table_definition_cache 524288 SET @@global.table_definition_cache = 42949672950; Warnings: Warning 1292 Truncated incorrect table_definition_cache value: '42949672950' SELECT @@global.table_definition_cache; @@global.table_definition_cache 524288 'Bug # 34837: Errors are not coming on assigning invalid values to variable'; SET @@global.table_definition_cache = 21221204.10; ERROR 42000: Incorrect argument type to variable 'table_definition_cache' SET @@global.table_definition_cache = ON; ERROR 42000: Incorrect argument type to variable 'table_definition_cache' '#-------------------FN_DYNVARS_019_05----------------------------#' SET @@session.table_definition_cache = 0; ERROR HY000: Variable 'table_definition_cache' is a GLOBAL variable and should be set with SET GLOBAL SELECT @@session.table_definition_cache; ERROR HY000: Variable 'table_definition_cache' is a GLOBAL variable '#----------------------FN_DYNVARS_019_06------------------------#' SELECT @@global.table_definition_cache = VARIABLE_VALUE FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME='table_definition_cache'; @@global.table_definition_cache = VARIABLE_VALUE 1 '#---------------------FN_DYNVARS_019_07----------------------#' SET @@global.table_definition_cache = TRUE; Warnings: Warning 1292 Truncated incorrect table_definition_cache value: '1' SELECT @@global.table_definition_cache; @@global.table_definition_cache 256 SET @@global.table_definition_cache = FALSE; Warnings: Warning 1292 Truncated incorrect table_definition_cache value: '0' SELECT @@global.table_definition_cache; @@global.table_definition_cache 256 '#---------------------FN_DYNVARS_019_08----------------------#' SET @@global.table_definition_cache = 5; Warnings: Warning 1292 Truncated incorrect table_definition_cache value: '5' SELECT @@table_definition_cache = @@global.table_definition_cache; @@table_definition_cache = @@global.table_definition_cache 1 '#---------------------FN_DYNVARS_019_09----------------------#' SET table_definition_cache = 1; ERROR HY000: Variable 'table_definition_cache' is a GLOBAL variable and should be set with SET GLOBAL SET global.table_definition_cache = 1; ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'table_definition_cache = 1' at line 1 SELECT global.table_definition_cache; ERROR 42S02: Unknown table 'global' in field list SELECT table_definition_cache = @@session.table_definition_cache; ERROR 42S22: Unknown column 'table_definition_cache' in 'field list' SET @@global.table_definition_cache = @start_value; SELECT @@global.table_definition_cache; @@global.table_definition_cache 256