-- SQL Server Syntax-- Trigger on an INSERT, UPDATE, or DELETE statement to a table or view (DML Trigger)CREATE[ORALTER]TRIGGER[schema_name. ]trigger_nameON{ table | view } [WITH<dml_trigger_option>[ ,...n ] ] {FOR|AFTER|INSTEADOF} { [INSERT] [ , ] [UPDATE] [ , ] [DELETE...
-- SQL Server Syntax-- Trigger on an INSERT, UPDATE, or DELETE statement to a table or view (DML Trigger)CREATE[ORALTER]TRIGGER[schema_name. ]trigger_nameON{ table | view } [WITH<dml_trigger_option>[ ,...n ] ] {FOR|AFTER|INSTEADOF} { [INSERT] [ , ] [UPDATE] [ , ] [DELETE...
如需詳細資訊,請參閱 CREATE TRIGGER。 FOREIGN KEY 條件約束可以參考相同資料表中的另一個資料行。 這稱為自我參考。 資料行層級 FOREIGN KEY 條件約束的 REFERENCES 子句只能列出一個參考資料行。 這個資料行必須有定義了條件約束的資料行之相同資料類型。 資料表層級 FOREIGN KEY 條件約束的 REFERENCES 子句,必須...
Gli eventi DML sono istruzioni INSERT, UPDATE o DELETE eseguite su una tabella o una vista. Questi trigger vengono attivati quando viene generato un evento valido, indipendentemente dal fatto che esistano o meno righe di tabella interessate. I trigger DDL vengono eseguiti in risposta a vari...
CREATE TRIGGER Purchasing.savedel ON Purchasing.PurchaseOrderDetail FOR DELETE AS INSERT del_save SELECT * FROM deleted; We do not recommend using nested triggers in an order-dependent sequence. Use separate triggers to cascade data modifications. ...
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SQL Server 允许为每个 DML、DDL 或 LOGON 事件创建多个触发器。例如,如果为已经有了 UPDATE 触发器的表执行 CREATE TRIGGER FOR UPDATE,则将再创建一个 UPDATE 触发器。在 SQL Server 早期版本中,对于每个表,每个 INSERT、UPDATE 或 DELETE 数据修改事件只允许有一个触发器。
在SQL Server 2008中,设要在T表上创建一个针对插入和更新操作的后触发型触发器。请补全下列语句:CREATE TRIGGER tri_T ON T1 1INS
FL 500The CREATE TRIGGER (advanced) statement defines an advanced trigger in a schema and builds a trigger package at the current server. Each time that the trigger activates, the trigger package executes one or more times.
Transact-SQL Syntax Conventions Syntax Trigger on an INSERT, UPDATE, or DELETE statement to a table or view (DML Trigger) CREATE TRIGGER [ schema_name . ]trigger_name ON { table | view } [ WITH <dml_trigger_option> [ ,...n ] ] { FOR | AFTER | INSTEAD OF } { [ INSERT ] [ ...