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14 check-ins related to "unlikely-func"

2013-09-13
17:47
Adjust the query planner to take into account WHERE clause terms that do not drive indices. Add the unlikely() and likelihood() functions used to give hints to the query planner about the selectivity of WHERE clause terms. (check-in: bc446449 user: drh tags: trunk)
2013-09-12
23:42
Refactor the ExprSetIrreducible() macro into ExprSetVVAProperty(*,EP_NoReduce). This is a naming change only. The logic is the same. (Closed-Leaf check-in: 695aee46 user: drh tags: unlikely-func)
17:29
Merge in the Expr.flags expansion to 32-bits. Use an extra bit to help optimize the sqlite3ExprSkipCollate() routine. (check-in: 4c84d1b4 user: drh tags: unlikely-func)
16:50
Increase the number of bits available in Expr.flags. Other tweaks aimed at making expression processing more robust. (Closed-Leaf check-in: 579a5125 user: drh tags: expr-tuning)
2013-09-11
17:39
Improvements to likelihood processing so that commuting an unindexed term in the WHERE clause does not change the query plan. (check-in: 6e6bded0 user: drh tags: unlikely-func)
14:34
Additional unlikely() test cases. Logic tweaks to support test coverage. (check-in: 5d00cce7 user: drh tags: unlikely-func)
11:38
Change the name of the two-argument unlikely() function to likelihood(). Add test cases. (check-in: 29a359b8 user: drh tags: unlikely-func)
03:53
Tweaks to the index selection logic. (check-in: 52d52688 user: drh tags: unlikely-func)
2013-09-10
01:53
Merge trunk fixes into the unlikely-func branch. (check-in: a51d7515 user: drh tags: unlikely-func)
01:41
Deterministically initialize the PRNG used as a tie-breaker in the ANALYZE command, so that the analysis is always the same given the same database. This simplifies testing. (check-in: 48ed8b56 user: drh tags: trunk)
2013-09-07
00:29
Continuing refinements of the logic to take WHERE clause terms not used for indexing into account when computing the number of output rows from each table. (check-in: b65dc534 user: drh tags: unlikely-func)
2013-09-06
17:45
Enhance the plan solver to take into account the number of output rows when computing the set of paths to retain for the next cycle. (check-in: 1a46a724 user: drh tags: unlikely-func)
15:23
Initial implementation of the unlikely() SQL function used as a hint to the query planner. (check-in: 036fc37a user: drh tags: unlikely-func)
13:10
Combine the FuncDef.iPrefEnc and FuncDef.flags fields into a single new FuncDef.funcFlags field. (check-in: 97b10e66 user: drh tags: trunk)