Cosmos querying over arrays of structural type #33998
Merged
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This PR adds general support for querying over arrays of structural types in Cosmos. Most translations work, various problems and edge cases are tracked separately.
Note that this PR introduces a bit of expression type explosion, with many types representing the same NoSQL syntax (but returning different things, i.e. scalar vs. structural type). See #33999 for more information, hopefully we clean this up at some point.
Closes #16926
Closes #20441
Closes #25700
Closes #25701
Closes #33032