- File src/select.c — part of check-in [9dbae1df] at 2017-07-18 17:34:41 on branch trunk — 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. (user: dan size: 222174) [more...]
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