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I don't know what is better to use Start Transaction OR Begin Work, and what is the difference.
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To start a transaction, you use the START TRANSACTION statement. The BEGIN or BEGIN WORK are the aliases of the START TRANSACTION . To commit the current transaction and make its changes permanent, you use the COMMIT statement. To roll back the current transaction and cancel its changes, you use the ROLLBACK statement.
START TRANSACTION; SELECT @A:=SUM(salary) FROM table1 WHERE type=1; UPDATE table2 SET summary=@A WHERE type=1; COMMIT; With START TRANSACTION , autocommit remains disabled until you end the transaction with COMMIT or ROLLBACK . The autocommit mode then reverts to its previous state.
BEGIN TRANSACTION represents a point at which the data referenced by a connection is logically and physically consistent. If errors are encountered, all data modifications made after the BEGIN TRANSACTION can be rolled back to return the data to this known state of consistency.
In MySQL, the transactions begin with the statement BEGIN WORK and end with either a COMMIT or a ROLLBACK statement. The SQL commands between the beginning and ending statements form the bulk of the transaction.
How to Begin and End Transactions. You begin a transaction with the first executable SQL statement (other than CONNECT) in your program. When one transaction ends, the next executable SQL statement automatically begins another transaction. Thus, every executable statement is part of a transaction.
From the MySQL manual:
BEGINandBEGIN WORKare supported as aliases ofSTART TRANSACTIONfor initiating a transaction.START TRANSACTIONis standard SQL syntax and is the recommended way to start an ad-hoc transaction.
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