快速問題,我正在構建一個簡單的觸發器,目的是減少一個名爲openSeats的表字段的值,觸發器在插入時執行,但我不知道用什麼命令說: 減少值openSeats,其中ID是等於插入標識插入sql觸發器
USE [Training]
GO
/****** Object: Trigger [dbo].[DecrementSeat] Script Date: 11/04/2011 14:55:17 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
-- =============================================
-- Author: <Author,,Name>
-- Create date: <Create Date,,>
-- Description: <Description,,>
-- =============================================
ALTER TRIGGER [dbo].[DecrementSeat]
ON [dbo].[personTraining]
AFTER INSERT
AS
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.
SET NOCOUNT ON;
UPDATE [dbo].[tbl_training]
SET openSeats = openSeats - 1
WHERE training_id =
END
「插入」列前綴不匹配查詢中使用 – user959443
由於表名或別名,得到它的工作,你可以給我推薦一個很好的教程或書觸發器? – user959443
這裏有一篇很好的關於觸發器的文章讓你入門(http://msdn.microsoft.com/en-us/magazine/cc164047.aspx)。任何有關SQL Server的書籍都會有很好的信息。如果這解決了你的答案,請標記爲答案。樂意效勞! – 2011-11-04 20:43:42