A rollback for backup should be easy a rollback for query is more complex and yes rollback can take more time and resource than a original query to run if you killed it in between you have no option but to wait. Before killing you should have run Kill SPID with statusonly to know ...
transaction. After you create a table, the following statements start a named transaction, insert two rows, and then roll back the transaction named in the variable@TransactionName. Another statement outside of the named transaction inserts two rows. The query returns the results of the previous ...
"; $params2 = array($qty, $productId); $stmt2 = sqlsrv_query( $conn, $tsql2, $params2 ); /* If both queries were successful, commit the transaction. */ /* Otherwise, rollback the transaction. */ if( $stmt1 && $stmt2 ) { sqlsrv_commit( $conn ); echo "Transaction was ...
Another statement outside of the named transaction inserts two rows. The query returns the results of the previous statements.SQL Kopéieren USE tempdb; GO CREATE TABLE ValueTable ([value] INT); GO DECLARE @TransactionName VARCHAR(20) = 'Transaction1'; BEGIN TRANSACTION @TransactionName INSERT...
回滚SQL语句用于在MS SQL Server中手动回滚事务。 Transactions in SQL Server are used to execute a set of SQL statements in a group. With transactions, either all the statements in a group execute or none of the statements execute. SQL Server中的事务用于在一个组中执行一组SQL语句。 使用事务时...
sqlsrv_fetch_object sqlsrv_field_metadata sqlsrv_free_stmt sqlsrv_get_config sqlsrv_get_field sqlsrv_has_rows sqlsrv_next_result sqlsrv_num_fields sqlsrv_num_rows sqlsrv_prepare sqlsrv_query sqlsrv_rollback sqlsrv_rows_affected sqlsrv_send_stream_data sqlsrv_server_info PDO_SQLSRV 驱动...
mysql> ROLLBACK; Query OK, 0 rows affected (0.00 sec) mysql> SELECT * FROM customer; +---+---+ | a | b | +---+---+ | 10 | Heikki | +---+---+ 1 row in set (0.00 sec) mysql> Transactions in Client-Side Languages In APIs such as PHP, Perl DBI, JDBC, ODBC, or th...
表から過去のデータを取り出す方法の詳細は、「SELECT」の「flashback_query_clause」を参照してください。 FLASHBACK TABLE文を使用する方法の詳細は、『Oracle Databaseバックアップおよびリカバリ・ユーザーズ・ガイド』を参照してください。 前提...
It is hard to tell without some specific details but if the original query used parallel workers it could have done more than 14 hours of work. For example if the update ran with 4 workers, in parallel, it would have done 56 hours of work or 2.3 days. Rollback is most...
Query OK, 2 rows affected (0.02 sec) Records: 2 Duplicates: 0 Warnings: 0 3)、开启两个session,分别命名为A和B。 注意:建表的时候,如果选择的字段(where里面用的)没有加索引,会造成加表锁,影响测试. 2、**先来验证innodb_rollback_on_timeout=off的情况** ...