Sqlserver mereg 合并 Insert、Update、Delete 增删改

CREATE TABLE TestA
(
	Id INT PRIMARY KEY IDENTITY(1,1),
    poisId VARCHAR(16) NOT NULL UNIQUE,
	pName VARCHAR(16)
)

INSERT dbo.TestA
(
    poisId,
    pName
)
VALUES
(   'B031704RPP', -- poisId - varchar(16)
    '中石化跨世加油站'  -- pName - varchar(16)
    ),
	(   'B0FFLCCK9Y', -- poisId - varchar(16)
    '中国石化加油站'  -- pName - varchar(16)
    ),
	(   'B0FFL2TG2I', -- poisId - varchar(16)
    '奔驰宝马汽车'  -- pName - varchar(16)
    )



MERGE dbo.TestA AS TargetA
USING (
	  SELECT 'B031704RPP' AS poisId, '第一条3次' as pName
	  UNION
	  SELECT 'B0FFGAWMVT' AS poisId, '第四条3次' as pName
	  UNION
	  SELECT 'B0FFLCCK9Y' AS poisId, '第二条3次' as pName
	  UNION
	  SELECT 'B0G0ANQBJR' AS poisId, '百世德' AS pName
) AS source (poidId,pName)
ON TargetA.poisId=source.poidId
WHEN MATCHED THEN 
UPDATE SET TargetA.pName=source.pName
WHEN NOT MATCHED THEN 
INSERT (poisId,pName)
VALUES(source.poidId,source.pName);

-- 写法二

MERGE dbo.TestA AS TargetA
USING (
	  Values( 'B031704RPP', '第一条3次'),
	   ('B0FFGAWMVT', '第四条3次'),
	  ('B0FFLCCK9Y', '第二条3次')
) AS source (poidId,pName)
ON TargetA.poisId=source.poidId
WHEN MATCHED THEN 
UPDATE SET TargetA.pName=source.pName
WHEN NOT MATCHED THEN 
INSERT (poisId,pName)
VALUES(source.poidId,source.pName);

　　

 官方文档地址 
https://docs.microsoft.com/zh-cn/sql/t-sql/statements/merge-transact-sql?view=sql-server-ver15
参考地址
https://blog.csdn.net/qq_27628011/article/details/89319710