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Asked: 2026-05-11T12:08:19+00:00

Sorry for the nondescript title. I’ll edit as we go along. I have a

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Sorry for the nondescript title. I’ll edit as we go along.

I have a table RateTable:

| Code   |  Date     |   Rate  |    B001     2009-01-01   1.05   B001     2009-01-02   1.05   B001     2009-01-03   1.05   B001     2009-01-04   1.05   B001     2009-01-05   1.06   B001     2009-01-06   1.06   B001     2009-01-07   1.06   B001     2009-01-08   1.07

There is an entry for each day, but the Rate rarely changes. Can I write a SQL query that will only return the rows in which a Rate change occurs? I’m using SQLServer

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1 Answer

  1. If I read this right, you aren’t looking for modified rows, but rows where the rate changes from the previous date. This query or something like it should do it:

    SELECT  r1.Code, r1.Date, r1.Rate FROM    RateTable r1 WHERE   r1.Rate <> (SELECT TOP 1 Rate                    FROM    RateTable                    WHERE   Date < r1.Date                    ORDER BY Date DESC)
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