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authorSimon Charette <charette.s@gmail.com>2022-08-10 08:22:01 -0400
committerMariusz Felisiak <felisiak.mariusz@gmail.com>2022-08-15 08:26:26 +0200
commitf387d024fc75569d2a4a338bfda76cc2f328f627 (patch)
tree61994be69d4dfa545158f7e887f0673ec281e479 /pyproject.toml
parentf3f9d03edf17ccfa17263c7efa0b1350d1ac9278 (diff)
Refs #28333 -- Added partial support for filtering against window functions.
Adds support for joint predicates against window annotations through subquery wrapping while maintaining errors for disjointed filter attempts. The "qualify" wording was used to refer to predicates against window annotations as it's the name of a specialized Snowflake extension to SQL that is to window functions what HAVING is to aggregates. While not complete the implementation should cover most of the common use cases for filtering against window functions without requiring the complex subquery pushdown and predicate re-aliasing machinery to deal with disjointed predicates against columns, aggregates, and window functions. A complete disjointed filtering implementation should likely be deferred until proper QUALIFY support lands or the ORM gains a proper subquery pushdown interface.
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