SET @start_value = @@global.table_definition_cache; '#--------------------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 > 0; @@global.table_definition_cache > 0 1 '#--------------------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 400 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 400 SET @@global.table_definition_cache = 2097151; SELECT @@global.table_definition_cache; @@global.table_definition_cache 2097151 SET @@global.table_definition_cache = 2097152; SELECT @@global.table_definition_cache; @@global.table_definition_cache 2097152 '#--------------------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 400 SET @@global.table_definition_cache = -1024; Warnings: Warning 1292 Truncated incorrect table_definition_cache value: '-1024' SELECT @@global.table_definition_cache; @@global.table_definition_cache 400 SET @@global.table_definition_cache = 2097153; Warnings: Warning 1292 Truncated incorrect table_definition_cache value: '2097153' SELECT @@global.table_definition_cache; @@global.table_definition_cache 2097152 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 2097152 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 400 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 400 '#---------------------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 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;