Re: COPY threads - Mailing list pgsql-general

From Ravi Krishna
Subject Re: COPY threads
Date
Msg-id 4382AB2D-744F-4A4C-B847-AC3556C2F80E@aol.com
Whole thread Raw
In response to Re: COPY threads  (Andres Freund <andres@anarazel.de>)
Responses Re: COPY threads
List pgsql-general
Thank you.  Let me test it and see the benefit. We have a use case for this.


> On Oct 10, 2018, at 17:18 , Andres Freund <andres@anarazel.de> wrote:
>
>
>
> On October 10, 2018 2:15:19 PM PDT, Ravi Krishna <srkrishna1@aol.com> wrote:
>>>
>>> pg_restore doesn't take locks on the table for the COPY, it does so
>>> because creating the table takes an exclusive lock.
>>
>>
>> Interesting.  I seem to recollect reading here that I can't have
>> concurrent COPY on the same table because of the lock.
>> To give an example:
>>
>> If I have a large file with say 400 million rows, can I first split it
>> into 10 files of 40 million rows each and then fire up 10 different
>> COPY sessions , each reading from a split file, but copying into the
>> same table.  I thought not.  It will be great if we can do this.
>
> Yes, you can.
>
> Andres
> --
> Sent from my Android device with K-9 Mail. Please excuse my brevity.



pgsql-general by date:

Previous
From: Andres Freund
Date:
Subject: Re: COPY threads
Next
From: Adrian Klaver
Date:
Subject: Re: tds_fdw binary column