How do I UPDATE from a SELECT in SQL Server?

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Question Description

In SQL Server, it’s possible to insert into a table using a SELECT statement:

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

Is it also possible to update via a 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 =

Practice As Follows

    Table_A.col1 = Table_B.col1,
    Table_A.col2 = Table_B.col2
    Some_Table AS Table_A
    INNER JOIN Other_Table AS Table_B
        ON =
    Table_A.col3 = 'cool'

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