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Overview
| Comment: | Add the OP_IfNoHope and OP_SeekHit opcodes used to reduce the number of unnecessary sqlite3BtreeMovetoUnpacked() calls when checking for an early exit on IN-operator loops. Futher optimizations are likely possible here. |
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| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | multikey-opt-idea |
| Files: | files | file ages | folders |
| SHA3-256: |
6bf251af4347165a470d39457d61ab6d |
| User & Date: | drh 2018-06-05 20:45:20 |
Context
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2018-06-07
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| 14:32 | Merge recent trunk enhancements. (check-in: e9d7bf4f user: drh tags: multikey-opt-idea) | |
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2018-06-05
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| 20:45 | Add the OP_IfNoHope and OP_SeekHit opcodes used to reduce the number of unnecessary sqlite3BtreeMovetoUnpacked() calls when checking for an early exit on IN-operator loops. Futher optimizations are likely possible here. (check-in: 6bf251af user: drh tags: multikey-opt-idea) | |
| 15:16 | Use an OP_NotFound opcode to cancel futile IN operators early. The current implementation is suboptimal because it always runs teh OP_NotFound. This still needs to be enhanced to only do the OP_NotFound if no results have been seen on the current loop. (check-in: 87a9fc50 user: drh tags: multikey-opt-idea) | |
Changes
Changes to src/vdbe.c.
Changes to src/vdbeInt.h.
Changes to src/where.c.
Changes to src/wherecode.c.