SET @start_value = @@global.slave_ddl_exec_mode;
SELECT @@global.slave_ddl_exec_mode;
@@global.slave_ddl_exec_mode
IDEMPOTENT
SELECT @@slave_ddl_exec_mode = @@GLOBAL.slave_ddl_exec_mode;
@@slave_ddl_exec_mode = @@GLOBAL.slave_ddl_exec_mode
1
1 Expected
SELECT COUNT(@@slave_ddl_exec_mode);
COUNT(@@slave_ddl_exec_mode)
1
1 Expected
SELECT COUNT(@@local.slave_ddl_exec_mode);
ERROR HY000: Variable 'slave_ddl_exec_mode' is a GLOBAL variable
Expected error 'Variable is a GLOBAL variable'
SELECT COUNT(@@SESSION.slave_ddl_exec_mode);
ERROR HY000: Variable 'slave_ddl_exec_mode' is a GLOBAL variable
Expected error 'Variable is a GLOBAL variable'
SELECT COUNT(@@GLOBAL.slave_ddl_exec_mode);
COUNT(@@GLOBAL.slave_ddl_exec_mode)
1
1 Expected
SELECT slave_ddl_exec_mode = @@SESSION.version;
ERROR 42S22: Unknown column 'slave_ddl_exec_mode' in 'field list'
Expected error 'Readonly variable'
SET @@GLOBAL.slave_ddl_exec_mode=STRICT;
SELECT @@GLOBAL.slave_ddl_exec_mode;
@@GLOBAL.slave_ddl_exec_mode
STRICT
SET @@GLOBAL.slave_ddl_exec_mode=IDEMPOTENT;
SELECT @@GLOBAL.slave_ddl_exec_mode;
@@GLOBAL.slave_ddl_exec_mode
IDEMPOTENT
SET @@GLOBAL.slave_ddl_exec_mode=XXX;
ERROR 42000: Variable 'slave_ddl_exec_mode' can't be set to the value of 'XXX'
SELECT @@GLOBAL.slave_ddl_exec_mode;
@@GLOBAL.slave_ddl_exec_mode
IDEMPOTENT
SET @@global.slave_ddl_exec_mode= @start_value;