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|Comment:||Use histogram data to improve the row-count estimates on equality constraints.|
|Downloads:||Tarball | ZIP archive | SQL archive|
|Timelines:||family | ancestors | descendants | both | stat2-enhancement|
|Files:||files | file ages | folders|
|User & Date:||drh 2011-01-20 16:52:09|
|20:36||Update ANALYZE test cases to check out the use of histograms for equality constraints. (check-in: c7b59afa user: drh tags: stat2-enhancement)|
|16:52||Use histogram data to improve the row-count estimates on equality constraints. (check-in: 6bfc5c69 user: drh tags: stat2-enhancement)|
|02:56||The first of a planned series of enhancements to the query planner that enable it to make better use of sqlite_stat2 histograms when the table has many repeated values. (check-in: 2cd374cd user: drh tags: stat2-enhancement)|
Changes to src/where.c.
Changes to test/analyze5.test.