Triggers in SQL Server - Learn about SQL Server triggers, their purpose, types, and benefits. Understand DML and DDL triggers with practical use cases.
Note that NEW is null in DELETEtriggers, so returning that is usually not sensible. The usual idiom in DELETE triggers is to return OLD.INSTEAD OF triggers (which are always row-level triggers, and may only be used on views) can return null to signal that they did not perform any up...
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.
What are the trigger differences between PostgreSQL and SQL Server? Compare the triggers in PostgreSQL vs. MSSQL 中文:两个数据库的trigger比较 PostgreSQL具有高级触发器。支持的触发事件为AFTER、BEFORE和INSTEAD OF,并可用于INSERT、UPDATE和DELETE事件。函数可用于在触发器被调用时执行复杂的SQL。PostgreSQL可以...
IGNORE_TRIGGERS 仅在INSERT选项与BULK一起使用时,才适用于语句。 指定大容量导入操作将忽略为表定义的所有触发器。 默认情况下,INSERT应用触发器。 仅当应用程序不依赖于任何触发器并最大程度地提高性能时,才使用IGNORE_TRIGGERS。 NOLOCK 等效于READUNCOMMITTED。 有关详细信息,请参阅本文后面的READUNCOMMITTED。
Use the SQL Editor to edit existing stored procedures, functions, triggers, and SQL scripts. This window opens when you open any of those objects. If you want to create a new SQL statement to run against your data source, use theSQL Paneof Query Designer. ...
Unlike DML triggers, DDL triggers are not scoped to schemas. Therefore, functions such as OBJECT_ID, OBJECT_NAME, OBJECTPROPERTY, and OBJECTPROPERTYEX cannot be used for querying metadata about DDL triggers. Use the catalog views instead. Server-scoped DDL triggers appear in the SQL Server ...
IGNORE_TRIGGERS 只有在 選項與 OPENROWSET搭配使用時,才適用於 語句。 指定大量匯入作業忽略資料表所定義的任何觸發程序。 根據預設,INSERT 會套用觸發程式。 只有在應用程式不依賴任何觸發程式且將效能最大化時,才使用 IGNORE_TRIGGERS。 NOLOCK 相當於 READUNCOMMITTED。 如需詳細資訊,請參閱本文稍後的 READUNCOMMIT...
A database's schema describes the definitions of its tables, columns, indices, and triggers. See the loadSchema() method for more information. The SQLConnection class provides the ability to encrypt databases using AES with CCM. This provides both authentication and privacy for data. To enc...
[DBA,ALL,USER]_TRIGGERS [DBA,ALL,USER]_TYPES [DBA,ALL,USER]_VIEWS [DBA,ALL,USER]_JOBS [DBA,ALL,USER]_JOBS_RUNNING [DBA,ALL,USER]_MVIEWS [DBA,ALL,USER]_MVIEW_LOGS [DBA,ALL,USER]_MVIEW_COMMENTS [DBA,ALL,USER]_USERS [DBA,ALL]_DIRECTORIES ...