OUTPUT子句从 SQL Server 2005 版本开始支持。如果使用的是较旧版本的 SQL Server,可能需要使用其他方法记录数据变更。 5. 总结 OUTPUT子句是 SQL Server 中一个非常有用的功能,能够在执行INSERT、UPDATE、DELETE和MERGE操作时捕获数据变更的结果。通过掌握OUTPUT子句的使用,可以实现数据审计、日志记录、数据同步等多种...
一个Merge 语句中出现的 Matched 操作,只能出现一次 UPDATE 或者 DELETE 语句,否则就会出现下面的错误 -An action of type 'WHEN MATCHED' cannot appear more than once in a 'UPDATE' clause of a MERGE statement. Merge 语句最后必须包含分号,以 ; 结束。 执行一下上面的 MERGE 语句查看一下结果,两个表的...
一个Merge 语句中出现的 Matched 操作,只能出现一次 UPDATE 或者 DELETE 语句,否则就会出现下面的错误 – An action of type ‘WHEN MATCHED’ cannot appear more than once in a ‘UPDATE’ clause of a MERGE statement. Merge 语句最后必须包含分号,以 ; 结束。 执行一下上面的 MERGE 语句查看一下结果,两...
通过在 MERGE 语句中指定OPTION (<query_hint>)子句,可以强制使用某种特定联接。 建议不要将哈希联接用作 MERGE 语句的查询提示,因为该联接类型不使用索引。 有关参数化的最佳做法 如果在没有参数的情况下执行 SELECT 、 INSERT 、 UPDATE 或 DELETE 语句, SQL Server 查询优化器可能会选择在内部参数化语句。 也...
SQL Server Azure SQL Database Azure SQL Managed Instance Azure Synapse Analytics SQL database in Microsoft Fabric The MERGE statement runs insert, update, or delete operations on a target table from the results of a join with a source table. For example, synchronize two tables by inserting, up...
Insert data returned from an OUTPUT clause into a table Show 7 more Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance SQL database in Microsoft Fabric Returns information from, or expressions based on, each row affected by anINSERT,UPDATE,DELETE, orMERGEstatement. These resul...
Insert data returned from an OUTPUT clause into a table Show 7 more Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance SQL database in Microsoft Fabric Returns information from, or expressions based on, each row affected by an INSERT, UPDATE, DELETE, or MERGE statement. ...
FL 500The MERGE statement updates a target (a table or view) using data from a source (the result of a table reference or the specified input data). Rows in the target that match the input data can be deleted or updated as specified, and rows that do not exist in the target can be...
When you run a query by using the MERGE statement in Microsoft SQL Server, you notice that the MERGE statement fails and returns an access violation error at BTreeRow::DisableAccessReleaseOnWait. Status Microsoft has confirmed th...
When you run a query by using the MERGE statement in Microsoft SQL Server, you notice that the MERGE statement fails and returns an access violation error at BTreeRow::DisableAccessReleaseOnWait. Status Microsoft has confirmed th...