parallel-processing multiple similar query tasks - any example?

From: Shaozhong SHI <shishaozhong(at)gmail(dot)com>
To: pgsql-general <pgsql-general(at)lists(dot)postgresql(dot)org>
Subject: parallel-processing multiple similar query tasks - any example?
Date: 2022-04-27 23:34:38
Message-ID: CA+i5Jwa0_9oEPKJUqAi6wLoNzDOiMpD_pLBwEtqtgj48M1Yg3w@mail.gmail.com
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multiple similar query tasks are as follows:

select * from a_table where country ='UK'
select * from a_table where country='France'
and so on

How best to parallel-processing such types of multiple similar query tasks?

Any example available?

Regards,

David

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