Question

我有两张桌子：

目标表：Specialisation (id , name , description)

来源表TempSpecialisation(id , name , description)

如果名称匹配，我想将TempSpe.description复制到Specialisation.Description，或在Specialisation中插入所有列的新记录。由于Specialisation.name末尾有空格，我得到重复的条目。

我的程序是：

USE [TempDatabase]
GO
/****** Object:  StoredProcedure [dbo].[TempDatabase2]    Script Date:      23/12/2015 3:46:49 PM ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO

ALTER PROCEDURE [dbo].[TempDatabase2]
WITH EXECUTE AS owner
as
BEGIN 

MERGE Specialisation as T
USING TempSpecialisation as S
ON s.Name = T.Name
WHEN NOT MATCHED BY Target 
THEN INSERT(id ,Name, Description1) VALUES(S.id ,S.Name, S.Description1)
WHEN MATCHED and t.name =s.name
THEN UPDATE SET T.Description1 = S.Description1 
OUTPUT $action, inserted.*;
End

表专业化

id       Name           Descriptions
545454   "Allergist  "  null

表TEmpSpecialisation

id       Name         Descriptions
1        "Allergist"  This is a doctor who helps with allergies.

我需要从TEmpSpecialisation更新专业化描述。但它给出了像

这样的输出

id       Name           Descriptions  
1        "Allergist"    This is a doctor who helps with allergies. 
545454   "Allergist  "  null

Answer 1

使用LTRIM(RTRIM(s.Name))从字段的开头和结尾删除空格，以便合并语句变为：

MERGE Specialisation as T
USING TempSpecialisation as S
ON LTRIM(RTRIM(s.Name)) = LTRIM(RTRIM(T.Name))
WHEN NOT MATCHED BY Target 
THEN INSERT(id ,Name, Description1) VALUES(S.id ,S.Name, S.Description1)
WHEN MATCHED
THEN UPDATE SET T.Description1 = S.Description1 
OUTPUT $action, inserted.*;
End

LTRIM Documentation

RTRIM Documentation

Answer 2

ALTER PROCEDURE [dbo].[TempDatabase2]
WITH EXECUTE AS OWNER
AS
BEGIN

    MERGE dbo.Specialisation T
    USING dbo.TempSpecialisation S ON LTRIM(S.Name) = LTRIM(T.Name)
    WHEN NOT MATCHED BY TARGET
        THEN
            INSERT (id, Name, Description1)
            VALUES (S.id, S.Name, S.Description1)
    WHEN MATCHED AND ISNULL(T.Description1, '') != ISNULL(S.Description1, '') -- remove ISNULL if Description1 NOT NULL
        THEN
            UPDATE SET T.Description1 = S.Description1
    OUTPUT $ACTION, INSERTED.*;

END

Answer 3

我用过

ON CHARINDEX(s.name,t.name) = 1

现在正在工作!! 谢谢

如何在存储过程中修剪字符串的空格？

3 个答案: