/* SerialNoMapper.getSerialNoForLock */ SELECT NEXT_ID FROM IDS WHERE TABLE_NAME = 'MSG_ID' FOR UPDATE /* SerialNoMapper.insert */ INSERT IDS (TABLE_NAME, NEXT_ID) VALUES ('MSG_ID', 1) /* SerialNoMapper.update */ UPDATE IDS SET NEXT_ID = NEXT_ID + 1 WHERE TABLE_NAME = 'MSG_ID' /* SerialNoMapper.getSerialNo */ SELECT CONCAT('MSGID_', lpad(NEXT_ID, 14, '0')) FROM IDS WHERE TABLE_NAME = 'MSG_ID'