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100 descendants of a00d2ed49c9f5326
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2013-11-21
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| 04:18 | Another improvement to OP_Function and an improvement to OP_Move. (check-in: 70b056fb user: drh tags: trunk) | |
| 03:43 | A simple change to the OP_Function opcode improves overall performance by about 0.5%. (check-in: b890eefd user: drh tags: trunk) | |
| 03:12 | Performance optimization to the OP_Next and OP_Prev opcodes. (check-in: ecaac28a user: drh tags: trunk) | |
| 01:33 | Refactor the OP_Column opcode to make it clearer and easier to maintain. Overall, performance tests show about a 1% speed increase with this change. (check-in: 972881c6 user: drh tags: trunk) | |
| 01:04 | Reduce the size of VdbeCursor again, this time without a performance hit. (Closed-Leaf check-in: 93393993 user: drh tags: OP_Column-refactor) | |
| 00:10 | Unpack some fields, adding some space back to the VdbeCursor object, in order to help the code to run a little faster. (check-in: f8d5efcd user: drh tags: OP_Column-refactor) | |
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2013-11-20
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| 21:51 | Reduce the size of the VdbeCursor object from 144 to 120 bytes. (check-in: 5f9d5068 user: drh tags: OP_Column-refactor) | |
| 20:58 | Improved comments on the OP_Column changes. Optimize out loading of overflow pages for content with zero length. Add test cases for the latter. (check-in: 0e05679d user: drh tags: OP_Column-refactor) | |
| 19:28 | Further performance tweaks to OP_Column. (check-in: 0e3f5df6 user: drh tags: OP_Column-refactor) | |
| 17:25 | Refactoring the OP_Column opcode for improved performance and maintainability. (check-in: 7c914e39 user: drh tags: OP_Column-refactor) | |
| 02:53 | Simplifications to the VdbeCursor object. (check-in: 5562cd34 user: drh tags: trunk) | |
| 00:59 | Performance improvement for the OP_MustBeInt opcode in the VDBE. (check-in: 96a65388 user: drh tags: trunk) | |
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2013-11-19
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| 18:17 | Fix a harmless MSVC compiler warning. (check-in: 6cc023bb user: drh tags: trunk) | |
| 13:55 | Minor performance improvement to sqlite3SerialTypeGet(). (check-in: 17e8524f user: drh tags: trunk) | |
| 12:33 | Change Noop-comments in where.c into Module-comments, so that they are omitting without SQLITE_ENABLE_MODULE_COMMENTS. (check-in: 3e577f40 user: drh tags: trunk) | |
| 02:34 | Avoid seeking on the main data table during the first loop of an UPDATE if an index is sufficient to check the WHERE clause. (check-in: 57158d9d user: drh tags: trunk) | |
| 00:31 | Fix an requirement mark in a test script so that it matches the typo-corrected requirement. No changes to code. (check-in: 072412d5 user: drh tags: trunk) | |
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2013-11-18
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| 19:32 | Add comments identifing where the skip-scan option is decided in the query planner, to aid in tuning that decision. No changes to code. (check-in: e9df04ce user: drh tags: trunk) | |
| 18:48 | Fix documentation typos. No changes to code. (check-in: 7caeb09c user: drh tags: trunk) | |
| 11:20 | Fix harmless compiler warnings from clang scan-build. (check-in: 8d002740 user: drh tags: trunk) | |
| 08:41 | Fix a problem with the shell tool EXPLAIN indentation code and VDBE sub-programs. (check-in: 9c8d6856 user: dan tags: trunk) | |
| 03:11 | Enable the ONEPASS optimization for DELETE, for both rowid and WITHOUT ROWID tables. (check-in: 44a07afd user: drh tags: trunk) | |
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2013-11-17
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| 02:42 | Make sure one-pass DELETE for WITHOUT ROWID tables correctly positions the PRIMARY KEY cursor. Make the same fix for UPDATE. (Closed-Leaf check-in: 6bd5750b user: drh tags: optimize-delete) | |
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2013-11-16
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| 23:16 | Fix a couple of minor problems with the new delete logic. (check-in: a11243f8 user: drh tags: optimize-delete) | |
| 23:03 | Fix an OOM-recovery problem in the DELETE code generator. (check-in: dc7be158 user: drh tags: optimize-delete) | |
| 22:48 | Combine the rowid and WITHOUT ROWID paths for DELETE into a single path. (check-in: c4734b88 user: drh tags: optimize-delete) | |
| 20:45 | The one-pass optimization is now working for DELETE on WITHOUT ROWID tables. (check-in: e4d220a3 user: drh tags: optimize-delete) | |
| 20:13 | Enhance the DELETE logic so that it can make use of WHERE_ONEPASS_DESIRED for rowid tables. (check-in: 8f479a72 user: drh tags: optimize-delete) | |
| 15:35 | Fully constraint the ORDER BY on the top-10 line of the --summary output from the wordcount test program. Add the run-wordcount.bash script for running wordcount in various configurations. (check-in: 7edf39eb user: drh tags: trunk) | |
| 14:03 | Avoid unnecessary OP_IfNull checks when doing a range query where there is a constraint on the lower bound of the range. (check-in: de08a7e7 user: drh tags: trunk) | |
| 13:55 | Simplification and performance improvement to the logic that factors constant expressions ouf of inner loops. (check-in: ee9353fd user: drh tags: trunk) | |
| 12:56 | Fix testcase misc7-16 so that it works with the new UNIQUE constraint error message format. (check-in: c7f2ed9f user: drh tags: trunk) | |
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2013-11-15
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| 20:06 | Add ALWAYS and NEVER macros to currently unreachable but important branches in sqlite3ExprCompare(). (Closed-Leaf check-in: cee835fe user: drh tags: expr-codegen-enhancement) | |
| 19:00 | Merge the operator comment fixes from trunk. (check-in: 9f14f55c user: drh tags: expr-codegen-enhancement) | |
| 18:58 | Fix comments on the OP_Divide and OP_Remainder operators, especially the "Synopsis:" comment, so that they agree with the actual implementation. (check-in: cc17f1f0 user: drh tags: trunk) | |
| 18:15 | Changes to make the new constant expression factoring logic more general and more testable. (check-in: d10fb49a user: drh tags: expr-codegen-enhancement) | |
| 16:48 | Add test cases for INSERT INTO ... DEFAULT VALUES on tables with numeric constants in CHECK constraints. (check-in: 79ec485b user: drh tags: expr-codegen-enhancement) | |
| 15:52 | Improvements to the Expr comparison routine to make it more general. Improvements to unary-minus code generation so that it can make use of a global constant register with a zero value. (check-in: 835be656 user: drh tags: expr-codegen-enhancement) | |
| 13:12 | Add the --query option to the wordcount test program. (check-in: 5960d11e user: drh tags: trunk) | |
| 12:41 | Simplify the range scan code generate while also avoiding an unnecessary OP_Affinity opcode. (check-in: 372686bf user: drh tags: expr-codegen-enhancement) | |
| 03:30 | Merge EXPLAIN fixes from trunk. (check-in: cd579727 user: drh tags: expr-codegen-enhancement) | |
| 03:21 | Fix a typo in the "synopsis" for the OP_Lt opcode that causes an incorrect comment to be added to EXPLAIN output. (check-in: d99a30a2 user: drh tags: trunk) | |
| 03:16 | Another adjustment to the EXPLAIN indentation logic, in order to deal with the sorter loop on a CREATE INDEX statement. (check-in: cbe85cc2 user: drh tags: trunk) | |
| 01:10 | Rework the logic that factors constant expressions out of inner loops, making it both simpler and faster. (check-in: 8dc5c76c user: drh tags: expr-codegen-enhancement) | |
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2013-11-14
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| 23:59 | Adjust the command-line shell EXPLAIN indentation logic to handle the second loop of an UPDATE that reads out a RowSet. (check-in: ea141a9b user: drh tags: trunk) | |
| 19:34 | Remove an unused local variable. (check-in: 10d59226 user: drh tags: trunk) | |
| 19:18 | Merge the skip-scan optimization into the sessions branch. (check-in: 7596d1bf user: drh tags: sessions) | |
| 15:35 | An experimental virtual tables for showing the content of internal schema objects. (Leaf check-in: d1fbc6ca user: drh tags: schema2-vtab) | |
| 00:09 | Simplification to the progress callback check. One branch removed. (check-in: 24ef1654 user: drh tags: trunk) | |
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2013-11-13
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| 23:48 | Make sure the progress callback is invoked prior to an SQLITE_ROW return if it is overdue to be called. (check-in: 21f59b04 user: drh tags: trunk) | |
| 20:46 | Merge the skip-scan enhancement into trunk. (check-in: b0bb975c user: drh tags: trunk) | |
| 19:01 | Import the "PRAGMA vdbe_eqp" enhancement and the enhanced EXPLAIN formatting the shell from trunk. Fix a bug in skip-scan and add a test case to prevent a regression. (Closed-Leaf check-in: f668616a user: drh tags: skip-scan) | |
| 18:35 | In the shell tool, if an "EXPLAIN" command is executed in ".explain on" mode, attempt to automatically indent the bodies of loops in the output VDBE program. (check-in: e7d34ec6 user: dan tags: trunk) | |
| 17:58 | Add the "PRAGMA vdbe_eqp" command, only available with SQLITE_DEBUG. Simplify some of the other debugging logic. (check-in: 8ce33f4c user: drh tags: trunk) | |
| 17:24 | Add VDBE comments to the beginning and end of skip-scan loops. (check-in: 0c85d93b user: drh tags: skip-scan) | |
| 16:58 | Improve the way that skip-scan loops are constructued. Add test cases. Improved the scoring of skip-scan loops. (check-in: 5e75ab93 user: drh tags: skip-scan) | |
| 15:32 | Add test cases for skip-scan. Enhance "do_test" so that if the expected result is of the form "/*..*/" or "~/*..*/" it treats the expected result as a glob pattern rather than as a regular expression. Fix a bug in ANALYZE result loading associated with WITHOUT ROWID tables. (check-in: d3e6e9b2 user: drh tags: skip-scan) | |
| 12:27 | Add the ability to use an index even if the left-most columns of the index are unconstrainted, provided that the left-most columns have few distinct values. (check-in: 27dd5993 user: drh tags: skip-scan) | |
| 08:55 | Avoid an unnecessary OP_IfNull while doing an indexed search. (check-in: 51960009 user: drh tags: trunk) | |
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2013-11-12
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| 21:37 | Adjust the SQLITE_MALLOCSIZE defines, primarily to make sure _msize gets used with MSVC when appropriate. (check-in: 4e7e805e user: mistachkin tags: trunk) | |
| 21:10 | Fix harmless compiler warning. (check-in: ddacd101 user: mistachkin tags: trunk) | |
| 20:18 | Minor enhancements to the auxiliary information added to EXPLAIN output with SQLITE_EXPLAIN_ENABLE_COMMENTS. (check-in: 0d1328e3 user: drh tags: trunk) | |
| 18:37 | Break out the structure and macro definitions of where.c into a separate header file whereInt.h for easier editing and debugging. (check-in: c4446712 user: drh tags: trunk) | |
| 17:46 | When possible, have FTS use 32-bit operations to read varints from the database. (check-in: aa7ba302 user: dan tags: trunk) | |
| 15:39 | Import recent bug fixes from trunk. (check-in: 20eeee4c user: drh tags: sessions) | |
| 15:33 | A better (simpler) fix to the count(*) problem addressed in the previous check-in. (check-in: 0f924c6e user: drh tags: trunk) | |
| 14:55 | Make sure the count(*) optimization works correctly on WITHOUT ROWID tables. (check-in: 91174779 user: drh tags: trunk) | |
| 12:30 | Update test command [explain_i] to handle the opcodes used by virtual tables (VNext, VFilter etc.). (check-in: 1b215ee3 user: dan tags: trunk) | |
| 12:17 | Fix for [4065ac8595]: Do not order CROSS or LEFT joins, even if the right-hand-side is a virtual table. (check-in: e2684ece user: dan tags: trunk) | |
| 01:11 | Fix an error message in the spellfix extension so that it conforms to the style of error messages in the core. (check-in: b896ae3d user: drh tags: trunk) | |
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2013-11-11
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| 23:26 | Add a comment to the sqlite3_index_info structure indicating that the new field is only available in SQLite 3.8.2 or later. (check-in: 239648f8 user: drh tags: trunk) | |
| 23:02 | Fix two test cases (due to changes in the formatting of constraint errors) so that all tests now pass. (check-in: 129e2b69 user: drh tags: sessions) | |
| 22:55 | Merge in the WITHOUT ROWID changes. A few tests are failing now. They will be fixed in a follow-on check-in. (check-in: 5addd123 user: drh tags: sessions) | |
| 19:56 | Fix typos in compile and run-time tests of the sqlite library version number in rtree.c. (check-in: f58d5701 user: dan tags: trunk) | |
| 19:01 | Add a way for virtual tables to return the expected number of rows for a scan (not just the overall cost) to SQLite. Have the rtree module make use of this. (check-in: 5a3cfd74 user: dan tags: trunk) | |
| 16:55 | Remove unreachable code, replacing it in most cases with assert() or NEVER() macros. (check-in: 924d63b2 user: drh tags: trunk) | |
| 03:37 | Fix issue with several memory allocation tests due to KeyInfo allocations now being shared. (check-in: 569fedd6 user: mistachkin tags: trunk) | |
| 03:24 | Convert several ALWAYS() macros in vdbe.c into assert() statements. (check-in: acc40ff6 user: drh tags: trunk) | |
| 02:46 | Fix several harmless compiler warnings. (check-in: e6ff492f user: mistachkin tags: trunk) | |
| 01:42 | Modify a HeapValidate assert in the Win32 native allocator. (check-in: aaed7d1d user: mistachkin tags: trunk) | |
| 00:43 | Fix a problem in OP_IdxDelete as used by REPLACE conflict resolution that comes up due to recent enhancements that reduce the work required for UNIQUE NOT NULL indices. (check-in: 61d7d475 user: drh tags: trunk) | |
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2013-11-10
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| 00:03 | Fix typo in comment and remove superfluous blank line. No changes to code. (check-in: 023233f1 user: mistachkin tags: trunk) | |
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2013-11-09
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| 23:55 | Fix compilation errors with some compilers that do not reference recent Windows SDK header files. (check-in: a5805976 user: mistachkin tags: trunk) | |
| 23:44 | Fix memory type mismatch when compiled with MEMDEBUG. (check-in: 2c32bd6d user: mistachkin tags: trunk) | |
| 22:08 | Add the sqlite3_win32_compact_heap() function for cleaning up memory allocations on Win32 system. Also cleanup the winGetTempname() function. Changes to the Win32 VFS only. (check-in: d06d9fdb user: drh tags: trunk) | |
| 21:19 | Updates to documentation on sqlite3_last_insert_rowid(). No changes to code. (check-in: a4c5804e user: drh tags: trunk) | |
| 21:11 | Use the UNICODE_STRING_MAX_CHARS constant from WinNT.h. (Closed-Leaf check-in: 3fefe4dd user: mistachkin tags: win32heap) | |
| 21:10 | Furhter cleanup of the winGetTempname function. (check-in: 674de36b user: mistachkin tags: win32heap) | |
| 19:47 | Updates to requirements marks. No changes to code. (check-in: 8a036628 user: drh tags: trunk) | |
| 18:15 | Throw an error if AUTOINCREMENT appears in a WITHOUT ROWID table. Updates to API documentation to discuss WITHOUT ROWID. (check-in: b1abb2b0 user: drh tags: trunk) | |
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2013-11-08
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| 20:10 | Add more assert() statements and fix compilation issues when the Win32 native heap is not enabled. (check-in: fbf8c382 user: mistachkin tags: win32heap) | |
| 19:51 | Disable use of HeapCompact on Windows CE as it is not available on all versions. (check-in: e9694b87 user: mistachkin tags: win32heap) | |
| 18:52 | Adjust the winMemInit return code handling used when resetting the Win32 native heap. (check-in: 37853665 user: mistachkin tags: win32heap) | |
| 18:37 | Minor corrections to logging for sqlite3_win32_compact_heap(). (check-in: 71347d02 user: mistachkin tags: win32heap) | |
| 18:13 | Enhancements to the Win32 native heap integration. (check-in: c54dc967 user: mistachkin tags: win32heap) | |
| 17:13 | Fix harmless compiler warnings. (check-in: 0077c077 user: drh tags: trunk) | |
| 17:03 | Merge the Cygwin directory separator fix. Also fix a C++-ism in the multiplexor code so that it will compile on MSVC. (check-in: 830629d3 user: drh tags: trunk) | |
| 16:54 | Performance improvement: Avoid unnecessary seeks on REPLACE INTO for a WITHOUT ROWID table. (check-in: fd11afa5 user: drh tags: trunk) | |
| 15:19 | Performance improvements: Avoid unnecessary seeks when doing a single-row UPDATE on a WITHOUT ROWID table. (check-in: 6f187a0f user: drh tags: trunk) | |
| 12:14 | Merge change to drop the mutex on the multiplexor before entering the xRead VFS call, in order to enhance parallelizability. (check-in: 3c566e41 user: drh tags: trunk) | |
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2013-10-21
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| 13:15 | Drop the mutex on the multiplexor before entering the xRead VFS call. (Closed-Leaf check-in: a00d2ed4 user: drh tags: multiplex-parallel-read) | |