sql 批量操作（存在的更新，不存在的插入）

 

标签： sql

2012-09-06 18:13 2408人阅读 评论(0) 收藏 举报

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Sql Server（123）

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update A SET A.NAME=
(
    select B.NAME from #tmpTB2 B where B.ID=A.ID
)
FROM #tmpTB3 A

insert into #tmpTB3
select * from #tmpTB2 B
where B.ID not in(select ID from #tmpTB3)

以上为：存在的更新，不存在的插入

以下为 批量更新某个标识字段：

 

UPDATE A SET A.Provider_IsActive=
(
    SELECT CASE WHEN
    (
        SELECT 1 FROM
        (
            SELECT DISTINCT Provider_System_Provider_Id
            FROM YOUR_DB_NAME.[dbo].[YOUR_TABLE_NAME2] P
            WHERE p.data_source = 'ika' and soft_delete_flag = 'n' and Provider_Active_Flag = 'y'
        ) B WHERE B.Provider_System_Provider_Id = left(A.External_provider_id,7)
    ) IS NULL THEN 0 ELSE 1 END AS Provider_IsActive
)
FROM YOUR_DB_NAME.[dbo].[YOUR_TABLE_NAME1] A

-- SELECT COUNT(*) FROM YOUR_DB_NAME.[dbo].[YOUR_TABLE_NAME1] A WHERE Provider_IsActive=0