Hi,
I have to use sqlalchemy to execute a very complex query.
It would be the union of ~30.000 smaller queries, joined with
query.union() or query.union_all().

I wonder whether it is better to just execute all these queries
separately and merge the results in python, or try the query.union
approach.
I noticed that unifying two queries usually produces a bit of garbaged
query, in the sense that the ORM tries to rename every object the the
verbose output is very long.

Has anyone ever tried to unify something like 30.000 query objects?
Thanks

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