On Tue, Jul 21, 2009 at 04:08:51PM +0600, Murat Kabilov wrote:
> I would like to know if there is a function that extracts an element by its
> index from an array?
No, the syntax most people expect and use would be arr[ndx]. If you
want a function, it would be easy to do:
CREATE FUNCTION array_index(anyarray,int)
RETURNS anyelement IMMUTABLE
LANGUAGE sql AS $$
SELECT $1[$2]; $$;
--
Sam http://samason.me.uk/