I would like to be able to say:
SELECT url,score_a(text, CAST('term' AS TEXT)) AS score FROM articles
WHERE score > 0
ORDER BY score DESC;
This returns: ERROR: Attribute 'score' not found.
The following works:
SELECT url,score_a(text, CAST('term' AS TEXT)) AS score FROM articles
WHERE score_a(text, CAST('term' AS TEXT)) > 0
ORDER BY score DESC;
Doesn't seem efficient to me? Or are the results from score_a cached
somehow?
score_a is a (rather computation-intensive :-) PL/Perl function which
returns an integer.
I am using PostgreSQL 7.0
--
Eric Jain
