1SET @start_global_value = @@global.innodb_change_buffering_debug; 2SELECT @start_global_value; 3@start_global_value 40 5select @@global.innodb_change_buffering_debug in (0, 1); 6@@global.innodb_change_buffering_debug in (0, 1) 71 8select @@global.innodb_change_buffering_debug; 9@@global.innodb_change_buffering_debug 100 11select @@session.innodb_change_buffering_debug; 12ERROR HY000: Variable 'innodb_change_buffering_debug' is a GLOBAL variable 13show global variables like 'innodb_change_buffering_debug'; 14Variable_name Value 15innodb_change_buffering_debug 0 16show session variables like 'innodb_change_buffering_debug'; 17Variable_name Value 18innodb_change_buffering_debug 0 19select * from information_schema.global_variables where variable_name='innodb_change_buffering_debug'; 20VARIABLE_NAME VARIABLE_VALUE 21INNODB_CHANGE_BUFFERING_DEBUG 0 22select * from information_schema.session_variables where variable_name='innodb_change_buffering_debug'; 23VARIABLE_NAME VARIABLE_VALUE 24INNODB_CHANGE_BUFFERING_DEBUG 0 25set global innodb_change_buffering_debug=1; 26select @@global.innodb_change_buffering_debug; 27@@global.innodb_change_buffering_debug 281 29select * from information_schema.global_variables where variable_name='innodb_change_buffering_debug'; 30VARIABLE_NAME VARIABLE_VALUE 31INNODB_CHANGE_BUFFERING_DEBUG 1 32select * from information_schema.session_variables where variable_name='innodb_change_buffering_debug'; 33VARIABLE_NAME VARIABLE_VALUE 34INNODB_CHANGE_BUFFERING_DEBUG 1 35set @@global.innodb_change_buffering_debug=0; 36select @@global.innodb_change_buffering_debug; 37@@global.innodb_change_buffering_debug 380 39select * from information_schema.global_variables where variable_name='innodb_change_buffering_debug'; 40VARIABLE_NAME VARIABLE_VALUE 41INNODB_CHANGE_BUFFERING_DEBUG 0 42select * from information_schema.session_variables where variable_name='innodb_change_buffering_debug'; 43VARIABLE_NAME VARIABLE_VALUE 44INNODB_CHANGE_BUFFERING_DEBUG 0 45set session innodb_change_buffering_debug='some'; 46ERROR HY000: Variable 'innodb_change_buffering_debug' is a GLOBAL variable and should be set with SET GLOBAL 47set @@session.innodb_change_buffering_debug='some'; 48ERROR HY000: Variable 'innodb_change_buffering_debug' is a GLOBAL variable and should be set with SET GLOBAL 49set global innodb_change_buffering_debug=1.1; 50ERROR 42000: Incorrect argument type to variable 'innodb_change_buffering_debug' 51set global innodb_change_buffering_debug='foo'; 52ERROR 42000: Incorrect argument type to variable 'innodb_change_buffering_debug' 53set global innodb_change_buffering_debug=-2; 54Warnings: 55Warning 1292 Truncated incorrect innodb_change_buffering_debug value: '-2' 56set global innodb_change_buffering_debug=1e1; 57ERROR 42000: Incorrect argument type to variable 'innodb_change_buffering_debug' 58set global innodb_change_buffering_debug=2; 59Warnings: 60Warning 1292 Truncated incorrect innodb_change_buffering_debug value: '2' 61select @@global.innodb_change_buffering_debug; 62@@global.innodb_change_buffering_debug 631 64SET @@global.innodb_change_buffering_debug = @start_global_value; 65SELECT @@global.innodb_change_buffering_debug; 66@@global.innodb_change_buffering_debug 670 68