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50 check-ins occurring around fc4d04e6b039ea5a.
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2014-04-03
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| 16:25 | Fix an integer overflow problem in the sorter. (check-in: 9d3351b8d7 user: dan tags: threads) | |
| 16:18 | Increase the version number to 3.8.4.3 (check-in: f05a49b6e0 user: drh tags: branch-3.8.4) | |
| 16:16 | Use OP_Copy instead of OP_SCopy when moving results out of a subquery, to prevent the subquery results from changing out from under the outer query. Fix for ticket [98825a79ce1456]. Problem introduced by check-in [1e64dd782a126f48d78]. (check-in: ec6a06246e user: drh tags: branch-3.8.4) | |
| 14:31 | Fix a typo in the "Synopsis:" comment for the OP_VFilter opcode. (check-in: 48ecdd4aff user: drh tags: trunk) | |
| 14:29 | Fix minor errors causing compilation to fail with SQLITE_MAX_WORKER_THREADS set to a value greater than zero. (check-in: 0561272abf user: dan tags: threads) | |
| 02:54 | Refactor local object and method names in vdbesort.c so that their names more closely reflect their actual use. (check-in: d284e30eb1 user: drh tags: threads) | |
| 00:32 | In the command-line shell, run set writable_schema before running the ".clone" command. (check-in: 9d2ae6342c user: drh tags: trunk) | |
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2014-04-02
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| 18:58 | Add a big introductory comment to vdbesort.c explaining its operation at a high level. Also adjust some symbolic names and fix other comment issues in that file. (check-in: eef60f1bf5 user: drh tags: threads) | |
| 15:15 | Fix some problems with OOM handling in vdbesort.c. (check-in: 47e702bd83 user: dan tags: threads) | |
| 14:38 | Change the name of the SorterThread object to "SortSubtask" to avoid confusion with the SQLiteThread object. (check-in: 4ee2d910fb user: drh tags: threads) | |
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2014-04-01
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| 18:41 | When sorting data for a CREATE INDEX statement in single-threaded mode, assume that keys are delivered to the sorter in primary key order. Also fix various comments that had fallen out of date. (check-in: 821d1ac450 user: dan tags: threads) | |
| 15:38 | Even if compile time option SQLITE_MAX_WORKER_THREADS is set to one or greater, set the default number of worker threads to zero. Distribute data more evenly between threads in sqlite3VdbeSorterWrite() to improve performance when sorting large amounts of data. Add new test file sort2.test. (check-in: 643c86a056 user: dan tags: threads) | |
| 10:19 | Fix a problem with OOM handling in the sorter code. (check-in: 59cd5229e2 user: dan tags: threads) | |
| 01:24 | Remove an unnecessary conditional, replacing it with an assert(). Improvements to comments. (Closed-Leaf check-in: 834bf1c367 user: drh tags: overflow-pgno-cache) | |
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2014-03-31
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| 23:57 | Fix a compiler warning when SQLITE_DIRECT_OVERFLOW_READ is defined. Minor performance enhancement and size reduction. (check-in: 96385dc460 user: drh tags: overflow-pgno-cache) | |
| 22:03 | Merge in the latest changes and fixes from trunk. (check-in: f6211540c9 user: drh tags: overflow-pgno-cache) | |
| 20:05 | Remove an unnecessary conditional. (Closed-Leaf check-in: 7473c4dfc1 user: drh tags: query-plan-experiments) | |
| 19:57 | Add the SQLITE_MAX_WORKER_THREADS compile time option. And the SQLITE_CONFIG_WORKER_THREADS sqlite3_config() switch. (check-in: 2774710df8 user: dan tags: threads) | |
| 19:49 | Also make sure an index that is a proper subset of some other index has a higher cost than that other index. Add test cases. (check-in: b7830d232b user: drh tags: query-plan-experiments) | |
| 18:24 | Make sure that an index that covers a proper superset of the WHERE clause terms of some other index has a lower cost than the other index. (check-in: ea8b091004 user: drh tags: query-plan-experiments) | |
| 13:42 | Avoid a (harmless) buffer overread that is possible on an OOM when MEMSYS5 is engaged. (check-in: b3296267fb user: drh tags: trunk) | |
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2014-03-29
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| 21:16 | Experiments in picking better query plans, especially when the usage of one index is a subset of another. (check-in: 8f869ca7a6 user: drh tags: query-plan-experiments) | |
| 19:48 | Changes to make the multi-threaded sorter sort stably. (Closed-Leaf check-in: 83a105c864 user: dan tags: threads-closed) | |
| 10:01 | Fix a broken assert() in vdbesort.c. (check-in: 18d1b402f2 user: dan tags: threads) | |
| 09:34 | Fix a problem in vdbesort.c causing spurious SQLITE_NOMEM errors when using memsys3 or memsys5. (check-in: a683c05f62 user: dan tags: threads) | |
| 06:27 | Add the optimization to avoid some unnecessary calls to sqlite3VdbeRecordUnpack() added to the trunk by [707ea170b3]. (check-in: fc4d04e6b0 user: dan tags: threads) | |
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2014-03-28
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| 19:47 | Fix a compiler warning and an after-OOM memory leak. (check-in: 58f7ca2930 user: drh tags: orderby-planning) | |
| 19:18 | Merge latest changes from orderby-planning branch. (check-in: 4c7fb54234 user: dan tags: threads) | |
| 18:35 | Merge the latest changes from trunk. (check-in: 3047a25f1c user: drh tags: orderby-planning) | |
| 14:41 | Disable the wal64k.test script for non-unix systems since it depends on unix-only features. (check-in: 27deb6e49b user: drh tags: trunk) | |
| 12:56 | Fix a harmless compiler warning. (check-in: a4e47150f3 user: drh tags: trunk) | |
| 03:12 | Enhance the sqlite3VdbeRecordCompare() routines so that if they encounter database corruption, they will set the UnpackedRecord.isCorrupt field and return 0. The sqlite3BtreeMovetoUnpacked() routine detects this and returns SQLITE_CORRUPT, causing the corruption to be reported back to the top-level. (check-in: 7fa85eaaaf user: drh tags: trunk) | |
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2014-03-27
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| 19:25 | Instead of allocating a single large buffer at the beginning of each sort operation, start with a small buffer and extend it using realloc() as required. (check-in: 81987c8ceb user: dan tags: orderby-planning) | |
| 18:36 | Minor cleanup of the code in the query planner that computes the costs estimates for the various plans. There are no changes to the costs at this time. But the code is slightly more readable now and that might facilitate future enhancements. (check-in: 9b4d7226bc user: drh tags: trunk) | |
| 17:23 | Use xFetch() to access temporary files in vdbesort.c. Use a single large allocation instead of many small allocations when accumulating records in vdbesort.c. This is an interim commit - it allocates a buffer the size of the page-cache every time data is sorted. (check-in: f4ac1bf28c user: dan tags: orderby-planning) | |
| 14:05 | Enhance the logest.c utility with new operators: "dup", "inv", "log", and "nlogn". Provide help on an invalid input. (check-in: b4bd2a062c user: drh tags: trunk) | |
| 00:09 | Merge the latest trunk changes and the fix for the crash on a corrupt database. (check-in: 0b35346c32 user: drh tags: orderby-planning) | |
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2014-03-26
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| 19:45 | Merge from trunk the fix for the crash on a corrupt database. (check-in: 8cb2b02baa user: drh tags: threads) | |
| 19:43 | Merge in fixes (including the corrupt-database crash fix) and performance enhancements from trunk. (check-in: fc8ca1a87e user: drh tags: sessions) | |
| 18:51 | Version 3.8.4.2 (check-in: 02ea166372 user: drh tags: release, version-3.8.4.2, branch-3.8.4) | |
| 16:25 | Increase the version number to 3.8.4.2. (check-in: 59978a2e42 user: drh tags: branch-3.8.4) | |
| 16:22 | Fix a potential buffer overread that could have occurred when searching a corrupt database file. (check-in: db2935473e user: drh tags: branch-3.8.4) | |
| 15:14 | Add an extra test case for the potential buffer overread patched by [28ddecff04]. (check-in: f585f5d7a0 user: dan tags: trunk) | |
| 15:05 | Add a test case to verify that the previous change avoids excess buffer overread in sqlite3VdbeRecordCompare(). (check-in: 2b28e8d582 user: drh tags: trunk) | |
| 14:51 | Earlier detection of corruption in sqlite3VdbeRecordCompare() in order to avoid a potential buffer overread. (check-in: 28ddecff04 user: drh tags: trunk) | |
| 12:02 | Add an assert() and a comment to clarify the operation of the vdbeRecordCompareInt() routine. (check-in: 851abdb8fd user: drh tags: trunk) | |
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2014-03-25
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| 20:28 | Adjust the repeat counts on several tests in speedtest1 so that the relative time spent on the test is roughly the same regardless of --size. (check-in: 7922809ee0 user: drh tags: trunk) | |
| 18:29 | Merge enhancements and fixes from trunk. (check-in: e005f2d6dd user: drh tags: orderby-planning) | |
| 17:45 | Add another performance test case to speedtest1. This case is another ORDER BY test but this time without LIMIT. (check-in: 9ab7ffd592 user: drh tags: trunk) | |
| 17:07 | Fix a problem in the code added by [707ea170b3] causing vdbesort.c to sort unstably. (check-in: d3e640afe6 user: dan tags: orderby-planning) | |