From: | Ken Tanzer <ken(dot)tanzer(at)gmail(dot)com> |
---|---|
To: | John R Pierce <pierce(at)hogranch(dot)com> |
Cc: | PG-General Mailing List <pgsql-general(at)postgresql(dot)org> |
Subject: | Re: How to assemble all fields of (any) view into a string? |
Date: | 2016-09-08 17:17:11 |
Message-ID: | CAD3a31Um9h7C3dcwVpNTz+43-kPD-pmMSDXhEycdWMb2sFi1Bw@mail.gmail.com |
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Lists: | pgsql-general |
On Wed, Sep 7, 2016 at 4:31 PM, John R Pierce <pierce(at)hogranch(dot)com> wrote:
> On 9/7/2016 1:36 PM, Ken Tanzer wrote:
>
>> No transformation is needed, except for padding the fields out to their
>> maximum lengths.
>>
>
> without accessing metadata, how would you know what those maximum lengths
> are??
>
I agree you'd need metadata. My OP mentioned looking this up in the
information schema
>
> and how would the calling program even know what the fields are if its not
> aware of the field lengths?
>
> Do you mean how would the function know? I didn't see a better way than
by explicitly passing the view name.
> what if a field is type 'text' ? or an array type ?
>
>
They won't be. This has to work for a very specific set of views I've
created, not for any view in the universe!
Cheers,
Ken
>
> --
> john r pierce, recycling bits in santa cruz
>
>
>
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