可以使用INFORMATION.SCHEMA.TRIGGERS类列出当前定义的触发器。 这个类列出每个触发器的名称、关联的模式和表名称以及触发器创建时间戳。 对于每个触发器,它列出EVENT_MANIPULATION属性(INSERT,UPDATE,DELETE,INSERT/UPDATE,INSERT/UPDATE/DELETE)和ACTION_TIMING属性(BEFORE,AFTER)。 它还列出了ACTION_STATEMENT,这是生成的...
DELETE (Transact-SQL) DENSE_RANK (Transact-SQL) DENY (Transact-SQL) DIFFERENCE (Transact-SQL) DISABLE TRIGGER (Transact-SQL) DROP 陳述式 (Transact-SQL) ELSE (IF...ELSE) (Transact-SQL) ENABLE TRIGGER (Transact-SQL) ENCRYPTBYASYMKEY (Transact-SQL) ...
One of the most used scenarios for triggers is to maintain a log of changes in a given table. In such case, there is no point on having three different triggers, each one firing on INSERT, UPDATE and DELETE operations. Fortunately we have the chance to use one single trigger for all ...
-- 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...
使用INSTEAD OF选项定义的触发器为前触发器。在这种模式的触发器中,指定执行触发器而不是执行引发触发器执行的SQL语句,从而替代触发的操作。因此,可知本题中属于前触发器,即只执行tri触发器,而不实际执行INSERT操作。故答案为B项。
BEFORE must not be specified when aview-nameis specified. FOR EACH STATEMENT must not be specified for a BEFORE trigger. AFTER Specifies that the trigger is anaftertrigger. The database manager executes thetriggered-actionafter it applies any changes caused by an insert, delete, or update operat...
1 MS SQL Server Trigger after another trigger 0 Create trigger on SQL Server table 3 CREATE TRIGGER - SQL SERVER 1 Triggers - with SQL Server 0 SQL Server after insert Trigger 0 MS SQL Trigger for Creation&Modification 0 After Insert trigger creation 0 Sql server: create a trigg...
设在SQL Server 2008中有如下定义触发器的语句: CREATE TRIGGER tri ON Tl FOR INSERT AS…… 下列关于该语句的说法,正确的是( )。 A. 该语句声明的是一个后触发型触发器,每当在Tl表上执行完插入操作之后,执行tri触发器 B. 该语句声明的是一个后触发型触发器,每当执行完tri触发器后,再执行插入语句 C. ...
Transact-SQL 语法约定 语法 复制 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 ] [ , ...
CREATE TRIGGER (Transact-SQL) CREATE TYPE (Transact-SQL) CREATE USER (Transact-SQL) CREATE VIEW (Transact-SQL) CREATE XML SCHEMA COLLECTION (Transact-SQL) CURRENT_REQUEST_ID (Transact-SQL) CURRENT_TIMESTAMP (Transact-SQL) CURRENT_USER (Transact-SQL) ...