Re: Issue with delete - Mailing list pgsql-admin

From Keith
Subject Re: Issue with delete
Date
Msg-id CAHw75vum=nO9FrJSOPBa_gg-Qi-F+becksyteHEzNhaBZ+X4Bw@mail.gmail.com
Whole thread Raw
In response to Issue with delete  (Rohit Rajput <rht.rajput@yahoo.com>)
List pgsql-admin


On Thu, Jun 24, 2021 at 5:08 AM Rohit Rajput <rht.rajput@yahoo.com> wrote:
Good day everyone,

I have few tables where i need to delete above 50 million rows each. Since i dont want to delete them all in one shot and block my table for extended time, i am trying to use limit with delete but its giving me error every time. May i please get some assistance here? Thanks

Here is what i am running:

delete from mytable where id in (select id from mytable where condition=true limit 1000);

where i run this, i get following error:

    Error: current transaction is aborted, commands ignored until end of transaction block.
SQL state: 25P02.


I am running it in RDS.


TIA, Best,
Rohit

As others said, there is no limit with the UPDATE/DELETE statements in PostgreSQL. However, you can get around that using a common table expression (CTE). We have a blog post on doing exactly this up at CrunchyData


Keith

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