Re: Compare with CHAR

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От Josh Berkus
Тема Re: Compare with CHAR
Дата
Msg-id web-682319@davinci.ethosmedia.com
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Ответ на Compare with CHAR  ("Tomas Eriksson" <tomas_@spray.se>)
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Tomas,

> I'm using a table with a indexed CHAR(3)-column. When I use SELECT ..
>  WHERE
> Col = 'XXX', some results are empty, but the value in the row seems
>  to be
> correct like other rows. If I update the row with same data I can get
>  it
> into the result. So I didn't find any logic reason for this. I can
>  find all
> rows using LIKE (or with some substring tests) with no problems.
>  Shouldn't =
> always works the same..?  (Postgres 7.1.3)

I'm pretty sure that your problem has something to do with thespace-padding of CHAR columns.  Please remember that 
'JB'::CHAR(5) = 'JB   ' != 'JB'::VARCHAR(5)

If you're sure that's not it, how about posting a tabledef and somequeries?

-Josh

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