Обсуждение: Detaching multiple partitions in 1 ALTER TABLE statement

Поиск
Список
Период
Сортировка

Detaching multiple partitions in 1 ALTER TABLE statement

От
Ben Hood
Дата:
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

Re: Detaching multiple partitions in 1 ALTER TABLE statement

От
Simon Riggs
Дата:
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/
PostgreSQL Solutions for the Enterprise

Re: Detaching multiple partitions in 1 ALTER TABLE statement

От
Adrian Klaver
Дата:
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/>
> PostgreSQL Solutions for the Enterprise


-- 
Adrian Klaver
adrian.klaver@aklaver.com