array_to_set functions

David Fetter and I just came up with these, perhaps others will find
them useful:

CREATE OR REPLACE FUNCTION array_to_set(anyarray, int) RETURNS SETOF anyelement LANGUAGE SQL AS $$
    SELECT $1[i] from generate_series(array_lower($1, $2), array_upper($1, $2)) i
$$;
CREATE OR REPLACE FUNCTION array_to_set(anyarray) RETURNS SETOF anyelement LANGUAGE SQL AS $$
    SELECT array_to_set($1, 1)
$$;
--
Decibel!, aka Jim Nasby                        decibel@decibel.org
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