Horton

Re: [POC] hash partitioning

Robert Haas <robertmhaas@gmail.com>

View thread View on postgr.es
From: Robert Haas <robertmhaas@gmail.com>
To: Dilip Kumar <dilipbalaut@gmail.com>
Cc: amul sul <sulamul@gmail.com>, Yugo Nagata <nagata@sraoss.co.jp>, David Steele <david@pgmasters.net>, Greg Stark <stark@mit.edu>, PostgreSQL-development <pgsql-hackers@postgresql.org>
Date: 2017-05-12T01:42:32Z
Lists: pgsql-hackers 
On Thu, May 11, 2017 at 12:02 PM, Dilip Kumar <dilipbalaut@gmail.com> wrote:
> We need to add PARTITION_STRATEGY_HASH as well, we don't support NULL
> for hash also, right?

I think it should.

Actually, I think that not supporting nulls for range partitioning may
have been a fairly bad decision.

-- 
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company

Commits

  1. Refactor get_partition_for_tuple a bit.

  2. Adopt Bob Jenkins' improved hash function for hash_any(). This changes the

  3. Improve hash_any() to use word-wide fetches when hashing suitably aligned