Detaching multiple partitions in 1 ALTER TABLE statement

Started by Ben Hoodalmost 7 years ago3 messagesgeneral
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#1Ben Hood
ben@relops.com

Hi,

I’m wondering what is the syntax for detaching multiple partitions in 1 ALTER TABLE statement.

I’ve tried this:

# ALTER TABLE movement_legs DETACH PARTITION movement_legs_2019_06_20_11_15, DETACH PARTITION movement_legs_2019_06_20_11_20;
psql: ERROR: syntax error at or near ","
LINE 1: ...gs DETACH PARTITION movement_legs_2019_06_20_11_15, DETACH P…

The documentation suggests "DETACH PARTITION can be combined into a list of multiple alterations to be applied together”:

https://www.postgresql.org/docs/12/sql-altertable.html

But I haven’t found an example of where multiple partitions are detached in 1 statement.

This is using version 12 beta 1.

Many thanks,

Ben

#2Simon Riggs
simon@2ndQuadrant.com
In reply to: Ben Hood (#1)
Re: Detaching multiple partitions in 1 ALTER TABLE statement

On Thu, 20 Jun 2019 at 15:19, Ben Hood <ben@relops.com> wrote:

Hi,

I’m wondering what is the syntax for detaching multiple partitions in 1
ALTER TABLE statement.

I’ve tried this:

# ALTER TABLE movement_legs DETACH PARTITION
movement_legs_2019_06_20_11_15, DETACH PARTITION
movement_legs_2019_06_20_11_20;
psql: ERROR: syntax error at or near ","
LINE 1: ...gs DETACH PARTITION movement_legs_2019_06_20_11_15, DETACH P…

The documentation suggests "DETACH PARTITION can be combined into a list
of multiple alterations to be applied together”:

Docs say this" All the forms of ALTER TABLE that act on a single table,
except RENAME , SET SCHEMA , ATTACH
PARTITION , and DETACH PARTITION can be combined into a list of multiple
alterations to be
applied together."

Perhaps a comma would be helpful, but its clear that you can do multiple
detaches in one command at present.

But it sounds like a great feature.

--
Simon Riggs http://www.2ndQuadrant.com/
<http://www.2ndquadrant.com/&gt;
PostgreSQL Solutions for the Enterprise

#3Adrian Klaver
adrian.klaver@aklaver.com
In reply to: Simon Riggs (#2)
Re: Detaching multiple partitions in 1 ALTER TABLE statement

On 6/20/19 9:00 AM, Simon Riggs wrote:

On Thu, 20 Jun 2019 at 15:19, Ben Hood <ben@relops.com
<mailto:ben@relops.com>> wrote:

Hi,

I’m wondering what is the syntax for detaching multiple partitions
in 1 ALTER TABLE statement.

I’ve tried this:

# ALTER TABLE movement_legs DETACH PARTITION
movement_legs_2019_06_20_11_15, DETACH PARTITION
movement_legs_2019_06_20_11_20;
psql: ERROR:  syntax error at or near ","
LINE 1: ...gs DETACH PARTITION movement_legs_2019_06_20_11_15, DETACH P…

The documentation suggests "DETACH PARTITION can be combined into a
list of multiple alterations to be applied together”:

Docs say this" All the forms of ALTER TABLE that act on a single table,
except RENAME , SET SCHEMA , ATTACH
PARTITION , and DETACH PARTITION  can be combined into a list of
multiple alterations to be
applied together."

Perhaps a comma would be helpful, but its clear that you can do multiple

^not
Or I am thoroughly confused:)

detaches in one command at present.

But it sounds like a great feature.

--
Simon Riggshttp://www.2ndQuadrant.com/ <http://www.2ndquadrant.com/&gt;
PostgreSQL Solutions for the Enterprise

--
Adrian Klaver
adrian.klaver@aklaver.com