From: | "Pavel Stehule" <pavel(dot)stehule(at)gmail(dot)com> |
---|---|
To: | "Toni Casueps" <casueps(at)hotmail(dot)com> |
Cc: | pgsql-general(at)postgresql(dot)org |
Subject: | Re: generic crosstab |
Date: | 2007-11-06 14:14:38 |
Message-ID: | 162867790711060614i6a053004w5e8606204301d303@mail.gmail.com |
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Thread: | |
Lists: | pgsql-general |
On 06/11/2007, Toni Casueps <casueps(at)hotmail(dot)com> wrote:
>
> I'm using the PostgreSQL crosstab functions to do something like this:
>
> From this table ...
>
> a x 10
> b x 13
> a y 11
> b y 17
>
>
> ... I get:
>
> x y
> a 10 11
> b 13 17
>
>
> To get the second table I have to specify the field list when I call the crosstab function (in this example it would be AS t(x integer, y integer))
> My problem arises when that field list changes, for example when someone inserts a record in the first table with a new value, for example "z". In that case I have to change my queries to AS t(x integer, y integer, z integer)
>
> Do you know how to declare a "generic" field list, or some other library similar to crosstab?
>
Hello
it isn't possible. PostgreSQL'SQL is strict typed language :(.
Pavel Stehule
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