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Changes In Branch stat4-change Excluding Merge-Ins

This is equivalent to a diff from 1c2166cb2a to f2207a0691

2015-03-16
16:28
When estimating the number of rows visited by a range scan for which the keys consist of more than one field, consider prefixes of stat4 samples as well as the full samples. This generates more accurate estimates. (check-in: 3e0590dee0 user: dan tags: trunk)
13:48
Use #ifdef to omit code that is only used for STAT3 and STAT4. (check-in: f2c9c5b57b user: drh tags: trunk)
12:13
When a WHERE clause contains disjuncts with the same operands, try to combine them into a single operator. Example: (x=A OR x>A) becomes (x>=A). (check-in: 7a3097689d user: drh tags: combine-disjuncts)
09:21
Another test case for the planner change on this branch. (Closed-Leaf check-in: f2207a0691 user: dan tags: stat4-change)
2015-03-14
18:59
When estimating the number of rows visited by a range scan for which the keys consist of more than one field, consider prefixes of stat4 samples as well as the full samples. (check-in: e1caf93c9a user: dan tags: stat4-change)
2015-03-13
15:44
Add tests to ensure "PRAGMA incremental_vacuum" and "PRAGMA auto_vacuum = incremental" handle corrupt databases correctly. (check-in: 1c2166cb2a user: dan tags: trunk)
08:31
Extra tests for commit [0f250957]. (check-in: 5aa522dcb9 user: dan tags: trunk)

Changes to src/where.c.

Changes to test/analyze9.test.