Re: generic crosstab

I was having the same problem.
I defined a "crosstab definition table" where I declare the things I want
out of crosstab and then I dynamically build views that will add the
needed "AS ct42( .... )".

Maybe someone else can suggest a better solution ...

Il Tuesday 06 November 2007 13:46:06 Toni Casueps ha scritto:
> 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?
>
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