Home Forums Programming General get set of random rows with distinct values RE: get set of random rows with distinct values

  • June 17, 2013 at 5:39 am

    #1624549

    by introducing a row_number function that partitions by the two columns, you cna find unique rows; fromt here, it's just the same query you had before, but hitting a subquery isntead of the raw table:

    SELECT

    TOP 6

    WORKID,

    AUTHORID

    FROM (SELECT

    ROW_NUMBER() OVER(PARTITION BY WORKID, AUTHORID ORDER BY WORKID, AUTHORID) AS RW,

    WORKID,

    AUTHORID

    FROM dbo.LITERARYWORKS) MyAlias

    WHERE RW = 1--finds Uniqueness across WORKID, AUTHORID

    ORDER BY

    CHECKSUM(NEWID())

    Lowell

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