From: | Michael Paquier <michael(at)paquier(dot)xyz> |
---|---|
To: | Amit Langote <amitlangote09(at)gmail(dot)com> |
Cc: | PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: Fix example in partitioning documentation |
Date: | 2019-09-24 02:14:42 |
Message-ID: | 20190924021442.GE2012@paquier.xyz |
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Lists: | pgsql-hackers |
On Tue, Sep 24, 2019 at 10:52:30AM +0900, Amit Langote wrote:
> As of v12, Append node is elided when there's a single subnode under
> it. An example in the partitioning documentation needs to be fixed to
> account for that change. Attached a patch.
Indeed, using the same example as the docs:
CREATE TABLE measurement (
logdate date not null,
peaktemp int,
unitsales int
) PARTITION BY RANGE (logdate);
CREATE TABLE measurement_y2016m07
PARTITION OF measurement (
unitsales DEFAULT 0
) FOR VALUES FROM ('2016-07-01') TO ('2016-08-01');
SET enable_partition_pruning = on;
EXPLAIN SELECT count(*) FROM measurement WHERE logdate = DATE
'2016-07-02';
I'll take care of committing that, however this will have to wait
until v12 RC1 is tagged.
--
Michael
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