对于当需要更新或一次插入所有的值的情况下,不仅对一个记录我用这个片段
第一次运行更新脚本
UPDATE Table1
SET OPIS = T1.OPIS
FROM
Table1 AS T
INNER JOIN
Table2 AS T1
ON
T.col = T1.col;
然后执行插入脚本
INSERT INTO Table1
SELECT * FROM
(
SELECT T1.* Table2 AS T1
LEFT JOIN Table1 AS T2 ON (T2.col = T1.col)
WHERE T2.col IS NULL
) AS T;
希望有人认为这有用。
这在MySQL中相当于(在某些情况下)是这样的:
INSERT INTO table (a,b,c) VALUES (1,2,3)
ON DUPLICATE KEY UPDATE c=c+1;
有人可以发现,这是在Solutions for INSERT OR UPDATE on SQL Server
相关的文章更新的版本使用MERGE (Transact-SQL):
DECLARE @USER_ID AS INT=76;
DECLARE @TYPE AS NVARCHAR(MAX)='set.global';
DECLARE @FKEY AS NVARCHAR(MAX)='21';
DECLARE @DATA AS NVARCHAR(MAX)='test';
begin tran
MERGE UserData
USING (SELECT @USER_ID, @TYPE, @FKEY, @DATA) AS Source([UserId], [Type], [FKey], [Data])
ON (UserData.[UserId] = Source.[UserId] AND UserData.[Type] = Source.[Type] AND (UserData.[FKey] = Source.[FKey] OR (Source.[FKey] IS NULL AND UserData.[FKey] IS NULL)))
WHEN MATCHED
THEN
UPDATE SET [Data] = Source.[Data]
WHEN NOT MATCHED BY TARGET THEN
INSERT
([UserId]
,[Type]
,[FKey]
,[Data])
VALUES
(Source.[UserId]
,Source.[Type]
,Source.[FKey]
,Source.[Data]);
commit tran
您正在使用哪个版本的SQL Server? – RobS 2008-12-04 14:06:40