SQL更新 - 多列(SQL Update - Multiple Columns)

我想在基于使用从第二表值的表更新多列Select语句来获得这样的价值观：

UPDATE tbl1 
SET (col1, col2, col3) = (SELECT colA, colB, colC 
                          FROM tbl2 
                          WHERE tbl2.id = 'someid') 
WHERE tbl1.id = 'differentid'

然而，这似乎并不虽然有可能“SET”多列名 - 是否有替代品，而不是编写单独的更新语句为每列？

UPDATE tbl1 
SET col1 = (SELECT colA FROM tbl2 WHERE tbl2.id = 'someid') 
WHERE tbl1.id = 'differentid'

UPDATE tbl1 
SET col2 = (SELECT colB FROM tbl2 WHERE tbl2.id = 'someid') 
WHERE tbl1.id = 'differentid'

UPDATE tbl1 
SET col3 = (SELECT colC FROM tbl2 WHERE tbl2.id = 'someid') 
WHERE tbl1.id = 'differentid'

Answer 1:

update tbl1
set col1 = a.col1, col2 = a.col2, col3 = a.col3
from tbl2 a
where tbl1.Id = 'someid'
and a.Id = 'differentid'

Answer 2:

这应该工作 -

    Update Tbl1 
    SET 
    Col1 = B.ColA,
    Col2 = B.ColB,
    Col3 = B.ColC
    FROM
    Tbl2 B
    Where
    B.Id = 'Someid'

文章来源: SQL Update - Multiple Columns