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wvenable
on Oct 3, 2019
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SQL queries don't start with SELECT
> Are CTEs an optimization barrier in MSSQL?
They are not. They are, however, in Postgres.
dragonwriter
on Oct 3, 2019
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They are not (or at least less likely to be) in Postgres 12, as they are inlined in a wide variety of cases.
jeltz
on Oct 4, 2019
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Not anymore since PostgreSQL 12 was released yesterday.
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They are not. They are, however, in Postgres.