Re: coalesce view error

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От mikeo
Тема Re: coalesce view error
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Msg-id 3.0.1.32.20000616112756.00924c80@pop.spectrumtelecorp.com
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Ответ на Re: coalesce view error  (Tom Lane <tgl@sss.pgh.pa.us>)
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the underlying table fields are varchars...

At 10:22 AM 6/16/00 -0400, Tom Lane wrote:
>mikeo <mikeo@spectrumtelecorp.com> writes:
>>   thanks for the patch.  one of my coworkers came up with a working
>>   solution:
>
>>> Hi Mike, try adding ::text before the AS...
>
>Hmm, offhand I do not see why that would work.  The two fields you're
>coalescing are both type text, no?  In that case the cast ought to be
>dropped out of the expression as redundant.
>
>If the fields are varchar or bpchar, then casting to text would work
>(at least in 7.0.*) because the parser would include an explicit
>RelabelType node in the stored expression...
>
>            regards, tom lane
>

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