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日期:2024-10-28
您可以直接從Transact-SQL 陳述式建立觸發程序,也可以利用Microsoft . ... SQL Server Syntax Trigger on an INSERT, UPDATE, or DELETE statement to a table or ......
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日期:2024-11-01
選擇性的ELSE 關鍵字是Boolean_expression 得出FALSE 或NULL 時,所執行的替代Transact-SQL 陳述式。 主題連結圖示 Transact-SQL 語法慣例 ......
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日期:2024-11-03
透過 sysobjects 可以查詢資料庫裡面的物件,根據欄位 xtype 可以查各種物件 select * from sysobjects where xtype= '種類代碼' xType種類代碼如下(請注意不同版本的MS-SQL支援的會略有不同): MSSQL 2000 object types: C = CHECK constraint...
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日期:2024-10-29
to 張小呆的碎碎唸 : 因為剛接觸trigger所以就把大大範例套在自己的運用上了 我是先判定寫入在做動作!!所以會才這樣解釋 #...
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日期:2024-11-01
The trick with these kinds of situations is to turn the sequential operation (for each record do xyz) into a set-based operation (an UPDATE statement). I have analyzed your stored procedure and merged your separate UPDATE statements into a single one. Thi...
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日期:2024-10-29
Hi, I am trying to create a trigger on my Projects table on Insert and Update. If a record is inserted the trigger needs to check another table Forecasts to see if the related record ......
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日期:2024-10-29
SQL Server Trigger - SQL Trigger Example in SQL Server 2008 or in SQL Server 2005 ... The sql CTE select statement returns the list of customers affected by Insert, Delete and Update sql command. Now, we can develop t-sql code to fetch the total sales amo...
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日期:2024-10-28
Microsoft SQL Server has trigger functions that are used to insert, update, or delete records when a change occurs on a table. Triggers are used to change records to keep data integrity intact. They are also used to audit tables for security reasons. A tr...