Re: Add SPLIT PARTITION/MERGE PARTITIONS commands

From: Alexander Lakhin <exclusion(at)gmail(dot)com>
To: Alexander Korotkov <aekorotkov(at)gmail(dot)com>, Dmitry Koval <d(dot)koval(at)postgrespro(dot)ru>
Cc: Robert Haas <robertmhaas(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: Add SPLIT PARTITION/MERGE PARTITIONS commands
Date: 2024-05-11 09:00:00
Message-ID: 86b4f1e3-0b5d-315c-9225-19860d64d685@gmail.com
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-hackers

Hello Dmitry and Alexander,

Please look at one more anomaly with temporary tables:
CREATE TEMP TABLE t (a int) PARTITION BY RANGE (a);
CREATE TEMP TABLE tp_0 PARTITION OF t FOR VALUES FROM (0) TO (1) ;
CREATE TEMP TABLE tp_1 PARTITION OF t FOR VALUES FROM (1) TO (2);
ALTER TABLE t MERGE PARTITIONS (tp_0, tp_1) INTO tp_0;
-- succeeds, but:
ALTER TABLE t SPLIT PARTITION tp_0 INTO
  (PARTITION tp_0 FOR VALUES FROM (0) TO (1),  PARTITION tp_1 FOR VALUES FROM (1) TO (2));
-- fails with:
ERROR:  relation "tp_0" already exists

Though the same SPLIT succeeds with non-temporary tables...

Best regards,
Alexander

In response to

Responses

Browse pgsql-hackers by date

  From Date Subject
Next Message Alvaro Herrera 2024-05-11 09:40:01 Re: cataloguing NOT NULL constraints
Previous Message Tatsuo Ishii 2024-05-11 07:23:07 Re: Row pattern recognition