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Overview
| Comment: | Disable the skip-scan optimization for DISTINCT queries. Fix for ticket [ced41c7c7d6b4d36] |
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| Downloads: | Tarball | ZIP archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: |
a871d69c6de65038360aa6142fbad226 |
| User & Date: | drh 2019-07-30 01:17:03.473 |
References
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2019-07-30
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| 14:22 | Improved fix for ticket [ced41c7c7d6b4d36] that keeps skip-scan enabled, but avoids identifying a skip-scan as order-distinct (because it is not) and thus forces a separate b-tree to implement the DISTINCT clause of a query. This undoes check-in [a871d69c6de65038] and substitutes a new fix. (check-in: 89bf0399e8 user: drh tags: trunk) | |
Context
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2019-07-30
| ||
| 14:22 | Improved fix for ticket [ced41c7c7d6b4d36] that keeps skip-scan enabled, but avoids identifying a skip-scan as order-distinct (because it is not) and thus forces a separate b-tree to implement the DISTINCT clause of a query. This undoes check-in [a871d69c6de65038] and substitutes a new fix. (check-in: 89bf0399e8 user: drh tags: trunk) | |
| 01:17 | Disable the skip-scan optimization for DISTINCT queries. Fix for ticket [ced41c7c7d6b4d36] (check-in: a871d69c6d user: drh tags: trunk) | |
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2019-07-29
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| 17:18 | Convert an assert() in R-Tree into a database corruption detection case. (check-in: 48b518eb6f user: drh tags: trunk) | |
Changes
Changes to src/where.c.
Changes to test/skipscan1.test.