Re: multivariate statistics / patch v7

From: Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>
To: Josh Berkus <josh(at)agliodbs(dot)com>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>
Cc: Jeff Janes <jeff(dot)janes(at)gmail(dot)com>, Stephen Frost <sfrost(at)snowman(dot)net>, Kyotaro HORIGUCHI <horiguchi(dot)kyotaro(at)lab(dot)ntt(dot)co(dot)jp>
Subject: Re: multivariate statistics / patch v7
Date: 2015-09-24 16:58:42
Message-ID: 56042BC2.6030201@2ndquadrant.com
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Hi,

On 09/24/2015 06:43 PM, Josh Berkus wrote:
> Tomas,
>
>> attached is v7 of the multivariate stats patch. The main improvement is
>> major refactoring of the clausesel.c portion - splitting the awfully
>> long spaghetti-style functions into smaller pieces, making it much more
>> understandable etc.
>
> So presumably v7 handles varlena attributes as well, yes? I have a
> destruction test case for correlated column stats, so I'd like to test
> your patch on it.

Yes, it should handle varlena OK. Let me know if you need help with
that, and I'd like to hear feedback - whether it fixed your test case or
not, etc.

regards

--
Tomas Vondra http://www.2ndQuadrant.com
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services

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