Re: Recommendations for partitioning? - Mailing list pgsql-performance

From Shaun Thomas
Subject Re: Recommendations for partitioning?
Date
Msg-id 52B46DCD.2070107@optionshouse.com
Whole thread Raw
In response to Re: Recommendations for partitioning?  (Alvaro Herrera <alvherre@2ndquadrant.com>)
Responses Re: Recommendations for partitioning?
List pgsql-performance
On 12/20/2013 09:59 AM, Alvaro Herrera wrote:

> WITH moved AS (
>     DELETE FROM src WHERE ..
>     RETURNING *
> ) INSERT INTO dst SELECT * FROM moved;

I know that's effectively an atomic action, but I'd feel a lot more
comfortable reversing that logic so the delete is based on the results
of the insert.

WITH saved AS (
     INSERT INTO dst
     SELECT * FROM src WHERE ...
     RETURNING *
)
DELETE FROM src
  WHERE ...;

I'll admit yours is cleaner, though. :)

--
Shaun Thomas
OptionsHouse | 141 W. Jackson Blvd. | Suite 500 | Chicago IL, 60604
312-676-8870
sthomas@optionshouse.com

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