Re: PARALLEL CTAS

The issue is there are certain performance benefits to be had by doing parallel CTAS operations and when converting from Oracle to PostgreSQL switching to a “COPY” operation isn’t feasible.
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Thanks,

Shane Borden
sborden76(at)gmail(dot)com

> On Dec 12, 2022, at 11:55 AM, Erik Brandsberg <erik(at)heimdalldata(dot)com> wrote:
>
> Copy operations are by far the most efficient way to do bulk loads. The fdw extension isn't very efficient based on prior experience.
>
> On Mon, Dec 12, 2022 at 11:17 AM Shane Borden <sborden76(at)gmail(dot)com <mailto:sborden76(at)gmail(dot)com>> wrote:
>> Based on testing thus far, it appears that the only way to get a bulk load operation (similar to oracle) would be to use the COPY command or to use multiple connections and break up the inserts across connections. I did see a possibility of using the postgres_fdw extension and use the batch functionality, but I haven’t tested that yet.
>>
>> Does anyone know the status of this feature / patch that was discussed in this link?
>>
>> https://www.postgresql.org/message-id/CAJcOf-cXnB5cnMKqWEp2E2z7Mvcd04iLVmV%3DqpFJrR3AcrTS3g%40mail.gmail.com
>>
>> Is there a way in PostgreSQL to parallelize a CTAS statement similar to how you can do it in Oracle?
>>
>> ---
>>
>> Thanks,
>>
>>
>> Shane Borden
>> sborden76(at)gmail(dot)com <mailto:sborden76(at)gmail(dot)com>