Horton

Re: [HACKERS] Proposal: Local indexes for partitioned table

Robert Haas <robertmhaas@gmail.com>

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From: Robert Haas <robertmhaas@gmail.com>
To: David Rowley <david.rowley@2ndquadrant.com>
Cc: Alvaro Herrera <alvherre@alvh.no-ip.org>, Peter Eisentraut <peter.eisentraut@2ndquadrant.com>, Amit Langote <Langote_Amit_f8@lab.ntt.co.jp>, Jesper Pedersen <jesper.pedersen@redhat.com>, Simon Riggs <simon@2ndquadrant.com>, Pg Hackers <pgsql-hackers@postgresql.org>, Maksim Milyutin <milyutinma@gmail.com>, Jaime Casanova <jaime.casanova@2ndquadrant.com>
Date: 2018-01-17T13:49:26Z
Lists: pgsql-hackers 
On Tue, Jan 16, 2018 at 6:08 PM, David Rowley
<david.rowley@2ndquadrant.com> wrote:
> On 17 January 2018 at 03:58, Alvaro Herrera <alvherre@alvh.no-ip.org> wrote:
>>> 9. Error details claim that p2_a_idx is not a partition of p.
>>> Shouldn't it say table "p2" is not a partition of "p"?
>>
>> You missed the "on" in the DETAIL:
>>   DETAIL:  Index "p2_a_idx" is not on a partition of table "p".
>> You could argue that this is obscurely worded, but if you look at the
>> command:
>>    ALTER INDEX p_a_idx ATTACH PARTITION p2_a_idx;
>> nowhere is table p2 mentioned, so I'm not sure it's a great idea to
>> mention the table in the error message.
>
> I think I did miss the "on".

I think you will not be the only person to make that mistake.  I think
it would be better phrased as

DETAIL: "p2_a_idx" is not an index of any partition of table "p"

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

Commits

  1. Local partitioned indexes

  2. Fix StoreCatalogInheritance1 to use 32bit inhseqno

  3. Get rid of copy_partition_key

  4. Simplify index_[constraint_]create API