... recently, MySQL had no support for transactions. In other words, when youexecuted a SQL statement under old versions of MySQL, it took effect immedi-ately. This behavior is still the default for MySQL. ... WHERE clause:UPDATE ACCOUNTSET BALANCE = 5.00, LAST_UPDATE_TIME = 996 432 238 000WHERE ACCOUNT_ID = 5 AND LAST_UPDATE_TIME = 996 432 191119If this transaction has dirty data, the update will fail and ... tothis question.Under MySQL, the right answer currently is to put the processing in the client dueto the lack of stored procedure support in MySQL. Stored procedures are on the MySQL to-do list,...