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Overview
| Comment: | Adjustments to the result row estimator for the IN operator so that it gives the same estimates as the equivalent OR operator. Test cases for the same. |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | stat2-enhancement |
| Files: | files | file ages | folders |
| SHA1: |
c82cb9c028b3ba5463ae50c30196dbf1 |
| User & Date: | drh 2011-01-21 18:18:13 |
Context
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2011-01-22
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| 00:10 | Add the ability to use indices for constraints of the form "x IS NOT NULL" when sqlite_stat2 is available and most entries for column x are NULL. check-in: 5d5bddd2 user: drh tags: stat2-enhancement | |
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2011-01-21
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| 18:18 | Adjustments to the result row estimator for the IN operator so that it gives the same estimates as the equivalent OR operator. Test cases for the same. check-in: c82cb9c0 user: drh tags: stat2-enhancement | |
| 16:27 | Make use of histogram data to make better estimates for the number of rows that will be returned from "x IN (v1,v2,v3,...)" constraints. check-in: fd3977a2 user: drh tags: stat2-enhancement | |
Changes
Changes to src/where.c.
Changes to test/analyze5.test.