[英]Update Table's rows based on another table'rows
I have 2 tables SQL Server(Tab1,Tab2)我有 2 个表 SQL Server(Tab1,Tab2)
Tab1 has表1有
col1
col2
col3
Tab2 has Tab2 有
col11
col22
col33
I want to copy data form我要复制数据表格
col1 into col11, and col2 into col22. col1 到 col11,col2 到 col22。
if col3 equal to col33.如果 col3 等于 col33。
How can i do that?我怎样才能做到这一点?
Just Join the tables Based on col3 = col33 and Update the other columns.只需加入基于 col3 = col33 的表并更新其他列。
UPDATE T2
SET
col11 = T1.col1,
col22 = T1.col2
FROM Tab1 T1
INNER JOIN Tab2 T2
ON T2.col33 = T1.col3
You have to just select column values from Tab2 and insert in Tab1 as below:您只需从 Tab2 中选择列值并插入 Tab1,如下所示:
INSERT INTO Tab2 (col11,col22,col33)
SELECT T1.col1,T1.col2,T1.col3
FROM Tab1 T1
WHERE T1.col3 EXISTS IN(SELECT col33 FROM Tab2 WHERE col33=T1.col3)
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