Re: function returning result set of varying column - Mailing list pgsql-sql

From maria s
Subject Re: function returning result set of varying column
Date
Msg-id d9d42a0f0806030706w3f6a724ble8bd964885099c3b@mail.gmail.com
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In response to Re: function returning result set of varying column  (Ivan Sergio Borgonovo <mail@webthatworks.it>)
Responses Re: function returning result set of varying column
Re: function returning result set of varying column
List pgsql-sql
Hi Ivan,
If I have to know the column names then I can't use the Functions.
As I said before, the columns will vary. or As Pavel Stehule said
I will use arrays.

Is anyone can show an example of returning a record with string and array?

Thanks,
Maria

On Tue, Jun 3, 2008 at 9:57 AM, Ivan Sergio Borgonovo <mail@webthatworks.it> wrote:
On Tue, 3 Jun 2008 09:41:27 -0400
"maria s" <psmg01@gmail.com> wrote:

> Thanks for all your replies.
>
> Actually I don't know the number of columns that I am going to
> return.
>
> I have 2 tables. For a single entry E1  in one table(t1), I have
> to fetch all the matching entries for E1 from the other
> table(t2),  K1,..Kn. and finally the function should return E1,
> K1..Kn. So I don't know the number of columns that I am going to
> get.
>
> Is it possible to write a function that returns this kind of
> result?

Up to my knowledge as Bart wrote in pl/pgsql you'll have to specify
somewhere the return type: in the function or in the select calling
the function.
If you use sql (not pl/pgsql) function you shouldn't be obliged to
specify the return type.
But I haven't written enough sql function to actually remember how
it works.

If you post your tentative sql it could give us more clue.

--
Ivan Sergio Borgonovo
http://www.webthatworks.it


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