Home Forums SQL Server 2012 SQL Server 2012 - T-SQL How do I convert column data into row data? RE: How do I convert column data into row data?

  • September 4, 2013 at 7:46 am

    #1647309

    Or CROSS APPLY VALUES:

    -- sample data

    ;WITH gennum (tollnum, n1, n2, n3) AS (

    SELECT 800123, 1234, 1235, 1236 UNION ALL

    SELECT 999123, 9876, 9875, 9874

    )

    -- solution

    SELECT g.tollnum, d.code

    FROM gennum g

    CROSS APPLY (VALUES (n1), (n2), (n3)) d (code)

    “Write the query the simplest way. If through testing it becomes clear that the performance is inadequate, consider alternative query forms.” - Gail Shaw

    For fast, accurate and documented assistance in answering your questions, please read this article.
    Understanding and using APPLY, (I) and (II) Paul White
    Hidden RBAR: Triangular Joins / The "Numbers" or "Tally" Table: What it is and how it replaces a loop Jeff Moden