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SQLite training in Houston TX on 2019-11-05 (details)
Part of the 2019 Tcl Conference

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Overview
Comment:Disable the table selection rule that tried to prevent full table scans from migrating to the outer loop unless they were optimal. The new scaling of outer-loop costs by cost of inner loops obviates the need for that step. And, in fact, that step causes problems with the new inner-loop cost accounting.
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SHA1: 51bfd63b7f9fe53831570ad124c932cb3582b104
User & Date: drh 2012-11-09 18:22:26
Context
2012-11-09
18:32
Take into account the cost of inner loops when selecting which table of a join to use for the next outer loop. check-in: 3f87f459 user: drh tags: trunk
18:22
Disable the table selection rule that tried to prevent full table scans from migrating to the outer loop unless they were optimal. The new scaling of outer-loop costs by cost of inner loops obviates the need for that step. And, in fact, that step causes problems with the new inner-loop cost accounting. Closed-Leaf check-in: 51bfd63b user: drh tags: inner-loop-cost
17:59
Try to take into account the cost of inner loops when selecting which table of a join to use for the outer loop. check-in: 94255634 user: drh tags: inner-loop-cost
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Changes to src/where.c.