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Changes In Branch improved-index-scan Excluding Merge-Ins
This is equivalent to a diff from 483994a54d to 50f8ea37fb
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2016-07-27
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| 19:30 | Enhance the query planner cost estimation for index scans to take into account WHERE clause terms that can be computed using only the index and that do not require looking up rows in the original table. This fixes an obscure performance regression that arose when the ORDER BY LIMIT optimization was added by check-in [bf46179d44843]. (check-in: 9e2b268114 user: drh tags: trunk) | |
| 19:20 | Add test cases and fix a comment. (Closed-Leaf check-in: 50f8ea37fb user: drh tags: improved-index-scan) | |
| 18:27 | When estimating the cost of an index scan, factor in the cost savings of being able to use the index to evaluate some WHERE clause terms without having to do a table lookup. (check-in: a59b5622f7 user: drh tags: improved-index-scan) | |
| 16:03 | Initialize a variable in where.c to avoid a valgrind warning. (check-in: 4d59df02d3 user: dan tags: trunk) | |
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2016-07-26
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| 18:15 | Merge latest trunk changes into this branch. (check-in: d4f3d52c5a user: dan tags: rowvalue) | |
| 15:17 | Merge fixes to sqlite3_scrub_backup() from trunk. (check-in: 91e811f51e user: drh tags: apple-osx) | |
| 10:46 | Ensure that the sqlite3_scrub_backup() extension creates a backup database at least as large as indicated by the database header, even if the last page of the input database is a free-list leaf. (check-in: 483994a54d user: dan tags: trunk) | |
| 04:49 | Copy the cache_spill setting from the main database over to the vacuum_db transient database when running a VACUUM. (check-in: c0e7d98ef2 user: drh tags: trunk) | |
Changes to src/expr.c.
Changes to src/sqliteInt.h.
Changes to src/where.c.
Added test/index8.test.
Changes to test/scanstatus.test.