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POcheck if value in column is date, and then do something with it
 

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  1. POcheck if value in column is date, and then do something with it
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    <p>I have a column that holds a rejected reason for a person. The value is either something like "Person refused" or "10/18/2012"</p> <p>I'm trying to setup my query to check if the value is a date, then it can put a blank space in its place. Otherwise, keep the text that's in there.</p> <p>The query that I setup is:</p> <pre><code>SELECT DISTINCT person_id, CASE description WHEN ISDATE(description) THEN '' END AS refuseReason FROM person </code></pre> <p>But this returns an error. If the dates themselves are saved as VARCHAR, then would I have to convert them first to a date, then check to see if ISDATE? If I did that, would it convert the text when it comes accross that?</p> <p>EDIT: I tried it by casting it to datetime, and i keep getting error as well:</p> <pre><code>SELECT DISTINCT person_id, CASE description WHEN ISDATE(CAST(OBSVALUE AS DATETIME)) THEN '' END AS refuseReason FROM person </code></pre>
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    1. USYuriy Galanter
    1. USGeorge
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    1. COIf you have the power to do so, *fix your schema*! Having a single column that is either a string or a date is a *Really really bad idea*!
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      1. USFlimzy
    2. COI totally agree Flimzy. Unfortunately that is out of my control :(
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      1. USGeorge
    3. COI don't even understand how a date can be a reason.
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      1. USAaron Bertrand
 

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