Dear friends, Please help me to understand several LOCKing the same tables without unlocking them between "LOCKs". Imagine the following code:
LOCK TABLES t1 READ, t2 READ; -- some hard select queries which need that other threads do not update tables LOCK TABLES t1 WRITE, t2 WRITE; -- some easy update queries UNLOCK TABLES; Is this code equal to the following: LOCK TABLES t1 READ, t2 READ; -- some hard select queries which need that other threads do not update tables UNLOCK TABLES; -- here other threads have a moment to update these tables! LOCK TABLES t1 WRITE, t2 WRITE; -- some easy update queries UNLOCK TABLES; or t1 and t2 will not be unlocked even for a moment before the second lock? Really, I don't want to have a single WRITE LOCK here and freeze everything for some time, but I can't understand if here is a chance for other threads to update tables between two lockings or not... MySQL 4.1, myisam tables (if it is important). Best regards, Denis Solovyov -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED]
