Re: Array detection in pg_dump

From: Bruce Momjian <bruce(at)momjian(dot)us>
To: PostgreSQL-development <pgsql-hackers(at)postgreSQL(dot)org>
Subject: Re: Array detection in pg_dump
Date: 2009-08-06 23:19:27
Message-ID: 200908062319.n76NJR628415@momjian.us
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Bruce Momjian wrote:
> Is there a reason we don't use pg_type.typcategory to detect arrays in
> Postgres 8.4? Right now I see this in pg_dump.c:
>
> if (g_fout->remoteVersion >= 80300)
> {
> appendPQExpBuffer(query, "SELECT tableoid, oid, typname, "
> "typnamespace, "
> "(%s typowner) AS rolname, "
> "typinput::oid AS typinput, "
> "typoutput::oid AS typoutput, typelem, typrelid, "
> "CASE WHEN typrelid = 0 THEN ' '::\"char\" "
> "ELSE (SELECT relkind FROM pg_class WHERE oid = typrelid) END AS typrelkind, "
> "typtype, typisdefined, "
> "typname[0] = '_' AND typelem != 0 AND "
> --> "(SELECT typarray FROM pg_type te WHERE oid = pg_type.typelem) = oid AS isarray "

^^

Oh, and what does that 'te' do? Seems useless.

--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com

+ If your life is a hard drive, Christ can be your backup. +

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