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Message-ID: <162867790712282329x2ff4d99cyd8057ec6aca76d70@mail.gmail.com>
Date: Sat, 29 Dec 2007 08:29:22 +0100
From: "Pavel Stehule" <pavel.stehule@gmail.com>
To: "Daniel Myers" <danielsmyers@gmail.com>
Subject: Re: PL/pgsql: function passing argument to IN operator
Cc: pgsql-sql@postgresql.org
In-Reply-To: <455d64770712282240h3c93a2f0y9e357d1d23882b10@mail.gmail.com>
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References: <455d64770712282240h3c93a2f0y9e357d1d23882b10@mail.gmail.com>

Hello

it has sense only for array type

so you can try:
create replace function foo(anyarray)
returns bool as $$
begin
  return (select 1 = any($1));
end ; $$ language plpgsql;


postgres=# select foo(array[1,2,3]);
 foo
-----
 t
(1 row)

postgres=# select foo(array[2,3]);
 foo
-----
 f
(1 row)

Regards
Pavel Stehule

On 29/12/2007, Daniel Myers <danielsmyers@gmail.com> wrote:
> Hello list,
>    I'm trying to write a function that uses one of its arguments as
> an input to an IN operator in a WHERE clause. I.e., something like:
>
> -- ids are actually integers
> CREATE FUNCTION foo(ids SOMETYPE) RETURNS [whatever] AS $$
> BEGIN
>    SELECT id, [other stuff] FROM table WHERE [other conditions] AND
> id IN (ids);
>    RETURN;
> END
> $$ plpgsql
>
> I had wanted to avoid using the EXECUTE statement and dynamically
> creating the query string, because 1) I'd rather not recompile the
> query each time and 2) I'm doing a SELECT INTO, which apparently
> doesn't work with EXECUTE.
>
> Can anyone help me out?
>
> Thanks,
> Daniel
>
> P.S.: Sorry if capitalizing SQL keywords is bad list etiquette...
>
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