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5 check-ins related to "join-strength-reduction"

2018-03-22
12:00
Add the left join strength reduction optimization. Enhance the push-down optimization so that it works with many LEFT JOINs. check-in: dd568c27 user: drh tags: trunk
2018-03-21
01:59
Relax LEFT-JOIN restrictions on the push-down optimization. Closed-Leaf check-in: b5d3dd8c user: drh tags: join-strength-reduction
2018-03-20
22:52
Do a more thorough job of cleaning traces of the strength-reduced LEFT JOIN. check-in: 08833dda user: drh tags: join-strength-reduction
21:16
If terms of the WHERE clause require that the right table in a LEFT JOIN not be a null row, then simplify the LEFT JOIN into an ordinary JOIN. check-in: 5b7abecc user: drh tags: join-strength-reduction
19:02
Fix incorrect testcase labels on two cases in join5.test. No changes to code. check-in: 4661ac81 user: drh tags: trunk