In this article, I am going to give a detailed explanation of how to use the SQL MERGE statement in SQL Server. TheMERGEstatement in SQL is a very popular clause that can handle inserts, updates, and deletes all in a single transaction without having to write separate logic for each of ...
在Merge Not Matched 操作中,只允许执行 INSERT 语句。 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...
在Merge Not Matched 操作中,只允许执行 INSERT 语句。 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 ...
Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance Azure Synapse Analytics SQL database in Microsoft FabricThe 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 ...
"SELECT INTO" with indexes? "Simple" SQL to check for alpha or numeric charcters isn't working right "String or binary data would be truncated.\r\nThe statement has been terminated." "String or binary data would be truncated" and field specifications “Unable to enlist in the transaction”...
For every insert, update, or delete action specified in the MERGE statement, SQL Server fires any corresponding AFTER triggers defined on the target table, but doesn't guarantee on which action to fire triggers first or last. Triggers defined for the same action honor the order you specify....
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。
UPDATE Production.UnitMeasure SET Name = @Name WHERE UnitMeasureCode = @UnitMeasureCode -- Insert the row if the UPDATE statement failed. IF (@@ROWCOUNT = 0) BEGIN INSERT INTO Production.UnitMeasure ( UnitMeasureCode, Name ) VALUES (@UnitMeasureCode, @Name) END END; GO -- Test the ...
-- MERGE statement with the join conditions specified correctly. USE tempdb; GO BEGIN TRAN; MERGE Target AS T USING Source AS S ON (T.EmployeeID = S.EmployeeID) WHEN NOT MATCHED BY TARGET AND S.EmployeeName LIKE 'S%' THEN INSERT(EmployeeID, EmployeeName) VALUES(S.EmployeeID, S.Employe...