dan 46133d98a6 Do not use the flattening optimization for a sub-query on the RHS of a LEFT ...

JOIN if that subquery reads data from a virtual table. Because it prevents the
planner from creating an automatic index on the results of the sub-query, the
flattening optimization sometimes slows things down in this case.

FossilOrigin-Name: 9dbae1df75219e2accd8993015ce0ffc21966d7e69d04178b1a2cc46207fe260

2017-07-18 17:34:41 +00:00

2.9 KiB

Raw Permalink Blame History

View Raw