如何从 SQL Server 中的 SELECT 更新?

2021-12-01 00:00:00 sql select tsql sql-server

在SQL Server中，可以使用INSERT.. SELECT语句将行插入到表中:

In SQL Server, it is possible to insert rows into a table with an INSERT.. SELECT statement:

INSERT INTO Table (col1, col2, col3)
SELECT col1, col2, col3 
FROM other_table 
WHERE sql = 'cool'

是否也可以使用SELECT更新表?我有一个包含值的临时表，并想使用这些值更新另一个表.也许是这样的:

Is it also possible to update a table with SELECT? I have a temporary table containing the values and would like to update another table using those values. Perhaps something like this:

UPDATE Table SET col1, col2
SELECT col1, col2 
FROM other_table 
WHERE sql = 'cool'
WHERE Table.id = other_table.id

推荐答案

UPDATE
    Table_A
SET
    Table_A.col1 = Table_B.col1,
    Table_A.col2 = Table_B.col2
FROM
    Some_Table AS Table_A
    INNER JOIN Other_Table AS Table_B
        ON Table_A.id = Table_B.id
WHERE
    Table_A.col3 = 'cool'

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