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