From: | Scott Cain <cain(at)cshl(dot)edu> |
---|---|
To: | pgsql-interfaces(at)postgresql(dot)org |
Subject: | finding indexed functions from pg_index |
Date: | 2005-09-20 18:15:36 |
Message-ID: | Pine.GSO.4.05.10509201409020.23347-100000@phage.cshl.edu |
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Lists: | pgsql-interfaces |
Hi,
I am trying to modify SQL::Translator, a perl module for translating
various dialects of SQL ddl (table, index creates, constraints, etc) (and
it does other cool things too, check it out!), to talk directly to a
PostgreSQL database to determine what tables it has, what columns they
have, indexes, constraints, etc. I have mostly figured out what I need
from pg_namespace, pg_class, pg_index and pg_attribute.
What I haven't figure out is this: how does one determine what the
declarative statement is for a functional index that is obtained from
pg_index.indexprs? What I would like to be able to do is be able to
recreate the SQL that defined that index. Is that represented somewhere
in another system table?
Thanks,
Scott
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Scott Cain, Ph. D. cain(at)cshl(dot)org
GMOD Coordinator, http://www.gmod.org/ (216)392-3087
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