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SET @start_value = @@global.expire_logs_days; SELECT @start_value; @start_value 0 '#--------------------FN_DYNVARS_029_01------------------------#' SET @@global.expire_logs_days = 99; SET @@global.expire_logs_days = DEFAULT; SELECT @@global.expire_logs_days; @@global.expire_logs_days 0 '#---------------------FN_DYNVARS_029_02-------------------------#' SET @@global.expire_logs_days = @start_value; SELECT @@global.expire_logs_days = 0; @@global.expire_logs_days = 0 1 '#--------------------FN_DYNVARS_029_03------------------------#' SET @@global.expire_logs_days = 0; SELECT @@global.expire_logs_days; @@global.expire_logs_days 0 SET @@global.expire_logs_days = 99; SELECT @@global.expire_logs_days; @@global.expire_logs_days 99 SET @@global.expire_logs_days = 10; SELECT @@global.expire_logs_days; @@global.expire_logs_days 10 SET @@global.expire_logs_days = 21; SELECT @@global.expire_logs_days; @@global.expire_logs_days 21 '#--------------------FN_DYNVARS_029_04-------------------------#' SET @@global.expire_logs_days = -1; Warnings: Warning 1292 Truncated incorrect expire_logs_days value: '-1' SELECT @@global.expire_logs_days; @@global.expire_logs_days 0 SET @@global.expire_logs_days = 100; Warnings: Warning 1292 Truncated incorrect expire_logs_days value: '100' SELECT @@global.expire_logs_days; @@global.expire_logs_days 99 SET @@global.expire_logs_days = 1024; Warnings: Warning 1292 Truncated incorrect expire_logs_days value: '1024' SELECT @@global.expire_logs_days; @@global.expire_logs_days 99 SET @@global.expire_logs_days = 10000.01; ERROR 42000: Incorrect argument type to variable 'expire_logs_days' SELECT @@global.expire_logs_days; @@global.expire_logs_days 99 SET @@global.expire_logs_days = -1024; Warnings: Warning 1292 Truncated incorrect expire_logs_days value: '-1024' SELECT @@global.expire_logs_days; @@global.expire_logs_days 0 SET @@global.expire_logs_days = 42949672950; Warnings: Warning 1292 Truncated incorrect expire_logs_days value: '42949672950' SELECT @@global.expire_logs_days; @@global.expire_logs_days 99 SET @@global.expire_logs_days = ON; ERROR 42000: Incorrect argument type to variable 'expire_logs_days' SELECT @@global.expire_logs_days; @@global.expire_logs_days 99 SET @@global.expire_logs_days = 'test'; ERROR 42000: Incorrect argument type to variable 'expire_logs_days' SELECT @@global.expire_logs_days; @@global.expire_logs_days 99 '#-------------------FN_DYNVARS_029_05----------------------------#' SET @@session.expire_logs_days = 0; ERROR HY000: Variable 'expire_logs_days' is a GLOBAL variable and should be set with SET GLOBAL SELECT @@expire_logs_days; @@expire_logs_days 99 '#----------------------FN_DYNVARS_029_06------------------------#' SELECT @@global.expire_logs_days = VARIABLE_VALUE FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME='expire_logs_days'; @@global.expire_logs_days = VARIABLE_VALUE 1 SELECT @@expire_logs_days = VARIABLE_VALUE FROM INFORMATION_SCHEMA.SESSION_VARIABLES WHERE VARIABLE_NAME='expire_logs_days'; @@expire_logs_days = VARIABLE_VALUE 1 '#---------------------FN_DYNVARS_029_07----------------------#' SET @@global.expire_logs_days = TRUE; SELECT @@global.expire_logs_days; @@global.expire_logs_days 1 SET @@global.expire_logs_days = FALSE; SELECT @@global.expire_logs_days; @@global.expire_logs_days 0 '#---------------------FN_DYNVARS_029_08----------------------#' SET @@global.expire_logs_days = 1; SELECT @@expire_logs_days = @@global.expire_logs_days; @@expire_logs_days = @@global.expire_logs_days 1 '#---------------------FN_DYNVARS_029_09----------------------#' SET expire_logs_days = 1; ERROR HY000: Variable 'expire_logs_days' is a GLOBAL variable and should be set with SET GLOBAL SELECT @@expire_logs_days; @@expire_logs_days 1 SET local.expire_logs_days = 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 'local.expire_logs_days = 1' at line 1 SELECT local.expire_logs_days; ERROR 42S02: Unknown table 'local' in field list SET global.expire_logs_days = 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 'global.expire_logs_days = 1' at line 1 SELECT global.expire_logs_days; ERROR 42S02: Unknown table 'global' in field list SELECT expire_logs_days = @@session.expire_logs_days; ERROR 42S22: Unknown column 'expire_logs_days' in 'field list' SET @@global.expire_logs_days = @start_value; SELECT @@global.expire_logs_days; @@global.expire_logs_days 0