Re: parallel-processing multiple similar query tasks - any example?
От | Steve Midgley |
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Тема | Re: parallel-processing multiple similar query tasks - any example? |
Дата | |
Msg-id | CAJexoSJy1yXa9vQuoN0U8ykf0w29yWJWw9aODak6sHsx+wzjNw@mail.gmail.com обсуждение исходный текст |
Ответ на | parallel-processing multiple similar query tasks - any example? (Shaozhong SHI <shishaozhong@gmail.com>) |
Ответы |
Re: parallel-processing multiple similar query tasks - any example?
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Список | pgsql-sql |
On Wed, Apr 27, 2022 at 4:34 PM Shaozhong SHI <shishaozhong@gmail.com> wrote:
multiple similar query tasks are as follows:select * from a_table where country ='UK'select * from a_table where country='France'and so onHow best to parallel-processing such types of multiple similar query tasks?
This depends on how you are engaging with the queries when they return results. Let's assume you are running them from a programming environment with an ORM layer. In that case you can run each query in a separate thread and connection pipe, and the queries will run async just fine. If you are running at the command line using psql, you can just open multiple shells and run each query from a different shell terminal.
Postgres is very good at async queries, so your challenge is really figuring out how you will use the results of each query and setting up the environment sending the queries to perform asynchronously.
Steve
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