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Comparision of a datetime variable against a column of the type nvarchar

  • September 2, 2012 at 11:19 pm

    #266149

    Hello All,

    I have a table like this:

    MinionRpt

    (

    Id [int], FullName [nvarchar](100), ..., EstDate [nvarchar](100)

    )

    If you noticed, the column [EstDate] (Estimated Date) is nvarchar(100). It need not always contain a date.

    Now I gotta query like this:

    select * from MinionRpt where DateDiff (d, EstDate, @StartDate) <= 0 and DateDiff(d, EstDate, @EndDate) >= 0

    The problem is when we have invalid formats or gibberish for EstDate in some records, the query would throw an error.

    I have no control over the existing data or any future data or even the schema design.

    Can some one tell me, how I should go about it?

    Thanks in advance,

    Venkat R Prasad.

  • September 2, 2012 at 11:59 pm

    #1532824

    Duplicate post. No replies here please.

    Replies belong here: http://www.sqlservercentral.com/Forums/Topic1353333-392-1.aspx

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    My advice:
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    The path of least resistance can be a slippery slope. Take care that fixing your fixes of fixes doesn't snowball and end up costing you more than fixing the root cause would have in the first place.

    Need to UNPIVOT? Why not CROSS APPLY VALUES instead?[/url]
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    [url url=http://www.sqlservercentral.com/articles/St

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