/ Timeline
Login

Many hyperlinks are disabled.
Use anonymous login to enable hyperlinks.

9 check-ins tagged with "transitive-constraints"

2015-05-18
12:18
Use an ALWAY() on conditionals in the transitive constraint logic that are always true as far as we know. Closed-Leaf check-in: 204e567f user: drh tags: transitive-constraints
11:34
Refinements to the determination of when an A==B term is an equivalence. Add test cases. check-in: 6bfaf525 user: drh tags: transitive-constraints
2015-05-16
20:51
Further restrictions on the use of the transitive property in WHERE clauses. check-in: 8c886c43 user: drh tags: transitive-constraints
19:17
Fix the transitive constraint processing to only allow transitivity if the operands of the == or IS operator have compatible affinities. check-in: a46a247f user: drh tags: transitive-constraints
2013-01-17
16:43
Add the ability to disable transitive constraints using the sqlite3_test_control(SQLITE_TESTCTRL_OPTIMIZATIONS) interface. Closed-Leaf check-in: 593d67c8 user: drh tags: transitive-constraints
16:18
Avoid unnecessary collating sequence and affinity restrictions on the use of transitivity. Add test cases to show that the restrictions are not needed. check-in: 56549f45 user: drh tags: transitive-constraints
15:05
Make more aggressive use of transitivity in optimizing queries. Add a test case. check-in: d9676284 user: drh tags: transitive-constraints
00:08
Improved comments explaining the operation of the findTerm() utility routine in where.c. Increase the maximum number of levels of transitivity from 4 to 11. check-in: fe152f8b user: drh tags: transitive-constraints
2013-01-16
17:08
Enhance the query planner to exploit transitivity of join constraints in a multi-way join. check-in: 13171eb5 user: drh tags: transitive-constraints