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sqlsql-serversql-order-byrow-number

Multiple columns in OVER ORDER BY

Is there a way to specify multiple columns in the OVER ORDER BY clause?

SELECT ROW_NUMBER() OVER(ORDER BY (A.Col1)) AS ID FROM MyTable A

The above works fine, but trying to add a second column does not work.

SELECT ROW_NUMBER() OVER(ORDER BY (A.Col1, A.Col2)) AS ID FROM MyTable A

Incorrect syntax near ','.

Solution

  • The problem is the extra parentheses around the column name. These should all work:

    -- The standard way
SELECT ROW_NUMBER() OVER(ORDER BY A.Col1) AS ID FROM MyTable A
SELECT ROW_NUMBER() OVER(ORDER BY A.Col1, A.Col2) AS ID FROM MyTable A

-- Works, but unnecessary
SELECT ROW_NUMBER() OVER(ORDER BY (A.Col1), (A.Col2)) AS ID FROM MyTable A

    Also, when you ask an SQL question, you should always specify which database you are querying against.