Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance Azure Synapse AnalyticsThe MERGE statement runs insert, update, or delete operations on a target table from the results of a join with a sourc
UPDATE and DELETE. In simple words, the MERGE statement in SQL provides a convenient way to perform all these three operations together which can be very helpful when it comes to handle the large running databases. But unlike INSERT, UPDATE and DELETE statements MERGE statement requires a source...
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...
命名空間:Microsoft.SqlServer.TransactSql.ScriptDom 組件:Microsoft.SqlServer.TransactSql.ScriptDom (在 Microsoft.SqlServer.TransactSql.ScriptDom.dll 中) 語法 C#複製 publicMergeStatement() 請參閱 參考 MergeStatement 類別 Microsoft.SqlServer.TransactSql.ScriptDom 命名空間...
SQL Server Management Studio 显示计划功能显示关系引擎为这两个 SELECT 语句生成相同的执行计划。对视图使用提示在视图扩展为访问其基表时,放置在查询中的视图的提示可能会与其他提示冲突。 发生这种情况时,查询将返回错误。 例如,请考虑下列视图,它们的定义中包含有表提示:SQL 复制 ...
MergeStatement 类型公开以下成员。 属性 展开表 名称说明 FirstTokenIndex Gets or sets the first token index. (从 TSqlFragment 继承。) FragmentLength Gets the fragment length. (从 TSqlFragment 继承。) LastTokenIndex Gets or sets the last token index. (从 TSqlFragment 继承。) MergeSpecification...
Here are two, TSQL examples: -- Using an explicit transaction BEGIN TRANSACTION; DELETE FROM HumanResources.JobCandidate WHERE JobCandidateID = 13; COMMIT; -- the ROLLBACK statement rolls back the INSERT statement, but the created table still exists. CREATE TABLE ValueTable (i...
SQL Server Azure SQL Database Azure SQL Managed Instance SQL analytics endpoint in Microsoft Fabric Warehouse in Microsoft Fabric SQL database in Microsoft Fabric Query hints specify that the indicated hints are used in the scope of a query. They affect all operators in the statement. IfUNIONis...
SQL Server Azure SQL Database Azure SQL Managed Instance SQL analytics endpoint in Microsoft Fabric Warehouse in Microsoft Fabric SQL database in Microsoft Fabric Query hints specify that the indicated hints are used in the scope of a query. They affect all operators in the statement. IfUNIONis...
Here are two, TSQL examples: -- Using an explicit transaction BEGIN TRANSACTION; DELETE FROM HumanResources.JobCandidate WHERE JobCandidateID = 13; COMMIT; -- the ROLLBACK statement rolls back the INSERT statement, but the created table still exists. CREATE TABLE ValueTable (id...