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Overview
| Comment: | Enhance whereLoopCheaperProperSubset(X,Y) so that it does not report true if X uses skip-scan less than Y, since in that case X might deserve to be cheaper even if it is a proper subset. |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
c106b755369c1f8546e897ecd2ac56fd |
| User & Date: | drh 2014-11-05 13:13:13 |
Context
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2014-11-05
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| 14:19 | Add a test case to check that the previous commit is effective. (check-in: 948d6e5d user: dan tags: trunk) | |
| 13:13 | Enhance whereLoopCheaperProperSubset(X,Y) so that it does not report true if X uses skip-scan less than Y, since in that case X might deserve to be cheaper even if it is a proper subset. (check-in: c106b755 user: drh tags: trunk) | |
| 09:07 | Add the ".scanstats on" command to the shell tool. Executing this command causes the shell tool to print values from sqlite3_stmt_scanstatus() after each query is run. (check-in: 7974c0ed user: dan tags: trunk) | |
Changes
Changes to src/where.c.