Re: PARALLEL CTAS

From: Rob Sargent <robjsargent(at)gmail(dot)com>
To: pgsql-sql(at)lists(dot)postgresql(dot)org
Subject: Re: PARALLEL CTAS
Date: 2022-12-12 17:25:08
Message-ID: 1e0484b6-40a6-15a9-9890-0991c8b8c1da@gmail.com
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On 12/12/22 10:13, Shane Borden wrote:
> 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.
> ---
>
> Thanks,
>
Today I suspect you're left with something like the following:
- CTAS from source where 1=2 (i.e. table definition via select semantics)
- copy from stdin (filled with intended CTAS select)

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