CREATE TRIGGER update_another_table AFTER UPDATE ON table1 FOR EACH ROW BEGIN UPDATE table2 SET column1 = NEW.column1 WHERE column1 = OLD.column1; END; 在上述示例中,update_another_table 是触发器的名称,table1 是要触发更新操作的表名。table2 是需要更新旧值的目标表名,column1 是...
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.
This circuitous implementation of a recursive trigger is called 'direct recursion,' whereas 'indirect recursion' in SQL Server 7.0 involves a trigger that updates another table whose trigger could update the original table, thus causing the original trigger to fire again. In SQL Server 7.0 and ...
This example trigger ensures that any insert, update or delete of a row in the emp table is recorded (i.e., audited) in the emp_audit table. The current time and user name are stamped into the row, together with the type of operation performed on it. CREATETABLEemp ( empname textNOT...
Update a field of a SQL table using a trigger from another table-field (PK) Good afternoon community, I have the following tables: dbo.RegistroGeneral: IdInpeccion (PK) int, IdEquipo int, IdEmpleado int, FechaFin datetime, FechaInicio datetime dbo.RegistroPasos:...S...
trigger_name を有効または無効にします。 トリガーを無効にした場合、それはまだテーブルに対して定義されています。 ただし、テーブルに対して INSERT、UPDATE、または DELETE ステートメントを実行すると、トリガーが再度有効化されるまでトリガー内のアクションは実行されません。 ALL テ...
If the object being updated appears more than one time in the FROM clause, one, and only one, reference to the object must not specify a table alias. All other references to the object in the FROM clause must include an object alias. A view with an INSTEAD OF UPDATE trigger can't be...
trigger_name 是触发器的名称。 AFTER INSERT ON table_name 指定触发器是在 table_name 表上执行插入操作之后触发的。 FOR EACH ROW 表示触发器会为每一行执行一次。 触发器体以 BEGIN 开始,以 END 结束,其中包含在触发事件发生时执行的SQL语句。 触发条件 触发器可以与不同的触发事件相关联,常见的触发事件包括...
trigger is called 'direct recursion,' whereas 'indirect recursion' in SQL Server 7.0 involves a trigger that updates another table whose trigger could update the original table, thus causing the original trigger to fire again. In SQL Server 7.0 and later, you can use the RECURSIVE TRIGGERS ...
You must also have space quota in the tablespace in which space is to be acquired in order to use the add_table_partition, modify_table_partition, move_table_partition, and split_table_partition clauses. Additional Prerequisites for Constraints and Triggers...