我需要编写一个存储过程,它将返回一个string.logic
当用户尝试插入新记录时,我需要检查该记录是否已经存在。如果存在则需要返回msg“记录存在”,否则返回“已插入”
以下是我现在所做的事情,我被困在这里。一些人帮我完成了程序
CREATE PROCEDURE [dbo].[spInsetPurpose]
@Purpose VARCHAR(500),
@Type VARCHAR(6),
@Result VARCHAR(10)= NULL OUTPUT
AS
BEGIN
Declare @Position VARCHAR(20)
DECLARE @TempTable TABLE (Purpose VARCHAR(500))
INSERT INTO @TempTable
SELECT Purpose FROM tblPurpose WHERE Purpose=@Purpose
INSERT INTO tblPurpose(Purpose,[Type]) VALUES(@Purpose,@Type)
END
答案 0 :(得分:3)
要检查该行是否已存在,您可以执行
If Exists (Select Top 1 1 from tblPurpose where Purpose = @Purpose and [Type] = @Type)
Begin
Insert Into tblPurpose
(Purpose, [Type])
Select
@Purpose, @Type
SET @Result = 'Inserted'
End
Else
Begin
SET @Result = 'Record exists'
End