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50 ancestors of 10a6e510497b471d
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2014-09-22
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| 03:22 | Disable shared memory operations using the unix-nolock VFS. (check-in: 10a6e51049 user: drh tags: trunk) | |
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2014-09-21
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| 22:31 | Correctly handle an ORDER BY clause on an outer query when applying the compound-subquery flattening optimization. Ticket [d11a6e908f]. Also add the SQLITE_ENABLE_SELECTTRACE option for additional debugging and analysis information about select statement processing. (check-in: d5880abd63 user: drh tags: trunk) | |
| 20:31 | Add test cases for ticket [d11a6e908f]. (Closed-Leaf check-in: 9683e001ed user: drh tags: select-trace) | |
| 17:51 | Add the "showauth" extension in ext/misc. (check-in: 28d52c1c38 user: drh tags: select-trace) | |
| 00:27 | Improved ".selecttrace" output. (check-in: c0b61f7092 user: drh tags: select-trace) | |
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2014-09-20
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| 20:38 | Candidate fix for [d11a6e908f]. (check-in: 89398880bc user: dan tags: select-trace) | |
| 20:24 | Fix the SELECTTRACE_ENABLE macro so that it doesn't cause problems for testfixture. Add new SELECTTRACE() calls. (check-in: f1ba68f131 user: drh tags: select-trace) | |
| 18:18 | Enable SELECT query planning tracing when compiled with SQLITE_ENABLE_SELECTTRACE and either SQLITE_DEBUG or SQLITE_TEST. (check-in: cbe0cf9ddf user: drh tags: select-trace) | |
| 00:35 | Fix the usage of the _GNU_SOURCE and _BSD_SOURCE macros in the main internal header file, sqliteInt.h. Set HAVE_STRCHRNUL to 1 by default on Linux only. (check-in: 59e2c9df02 user: drh tags: trunk) | |
| 00:29 | Only enable HAVE_STRCHRNUL by default on linux, as that is the only place it appears to work by default. (Closed-Leaf check-in: 0fac2c045f user: drh tags: sqliteIntMacros) | |
| 00:02 | Revise macro usage in 'sqliteInt.h'. (check-in: 35db3e2f35 user: mistachkin tags: sqliteIntMacros) | |
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2014-09-19
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| 22:44 | Simplify two conditionals and add testcase() macros to the affinity transform logic in the comparison operators. (check-in: 544664cadf user: drh tags: trunk) | |
| 22:30 | Recognize the invariant that a Mem object cannot be MEM_Dyn and have a non-zero szMalloc at the same time. Enforce this with assert()s and exploit it in the sqlite3VdbeMemClearAndResize() routine for a performance increase. (check-in: 3b21cf2b28 user: drh tags: trunk) | |
| 22:01 | Tighten the conditions under which applyNumericAffinity() be called and add assert() statements to prove that it is never called otherwise. (check-in: e996ca32cb user: drh tags: trunk) | |
| 20:13 | Fix the affinity on inserts into the ANALYZE tables. Change the affinity characters to be upper case, to make the P5 parameter of comparison operators easier to read. (check-in: 3f3ca76aea user: drh tags: trunk) | |
| 19:43 | Do not attempt to extend the temp file if VFS version 3 is not supported and hence memory mapped I/O is unavailable. (check-in: 3ab20ba14f user: drh tags: trunk) | |
| 19:00 | Make the "nolock" VFS on unix a version-3 VFS so that the sorter can use memory-mapped I/O. (check-in: 3db78d6100 user: drh tags: trunk) | |
| 16:56 | Remove a local variable from the OP_Column implementation, resulting in a modest size reduction and a performance increase. (check-in: 6199760d13 user: drh tags: trunk) | |
| 16:13 | Small size reduction and performance increase for releaseMemArray(). (check-in: 24cd32d681 user: drh tags: trunk) | |
| 16:02 | Updates to comments. No code changes. (check-in: 9b42c3da6b user: drh tags: trunk) | |
| 15:28 | The OP_Column opcode runs faster and is smaller by manually in-lining the code that persists string values in the output register. (check-in: 36b613ccf0 user: drh tags: trunk) | |
| 04:42 | Add the sqlite3VdbeMemClearAndResize() function. Fix a sorting-index prefilter problem. (check-in: 987a7a2119 user: drh tags: trunk) | |
| 02:01 | Make sure that the sorting-index pre-filter recognizes that a rowid reference might be sortable. This fixes a performance regression. (Closed-Leaf check-in: 72727b68cd user: drh tags: Cplusplus-comment) | |
| 00:43 | Add the sqlite3VdbeMemClearAndResize() interface to be used in place of sqlite3VdbeMemGrow(). A C++ style comment was left in this check-in by mistake, and so it has been moved into a branch to avoid problems in any future bisects on windows. (check-in: 5b9b898779 user: drh tags: Cplusplus-comment) | |
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2014-09-18
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| 21:25 | Add the Mem.szMalloc element to the Mem object and use it to keep track of the size of the Mem.zMalloc allocation. (check-in: 9c09ac353d user: drh tags: trunk) | |
| 18:55 | Correct typos in comments. No changes to code. (check-in: 5587993211 user: mistachkin tags: trunk) | |
| 17:52 | Merge the Mem.r value into the MemValue union as Mem.u.r. Hence, a Mem can now store an integer or a real but not both at the same time. Strings are still stored in a separate element Mem.z, for now. (check-in: 4c8c89d7e6 user: drh tags: trunk) | |
| 16:28 | Performance improvement for affinity transformations on comparison operators. (check-in: d7afdcbac2 user: drh tags: trunk) | |
| 14:36 | Since numeric affinity is the most common case, check it first. Interchange the NONE and TEXT affinity codes for easier checking of no affinity. (check-in: 4ef4c9a7c8 user: drh tags: trunk) | |
| 09:59 | Modify an assert() within sqlite3PagerWalFramesize(), a function only ever used by zipvfs, to account for recent zipvfs changes. (check-in: 3bd7c1b2fa user: dan tags: trunk) | |
| 02:20 | Fix harmless warnings on 32-bit MSVC builds. (check-in: 5192f964b2 user: drh tags: trunk) | |
| 01:50 | Make sure of the strchrnul() library function on platforms where it is available. (check-in: ef1aa10b7f user: drh tags: trunk) | |
| 01:29 | Merge micro-optimizations into trunk after fixing the build on MSVC. Performance now shows 7.58% faster than the 3.8.6 release on x64 with gcc 4.8.1 and -Os. (check-in: 1de558bcb1 user: drh tags: trunk) | |
| 01:21 | Fix compiler warnings and change the nullMem structure initializer into a format that MSVC can understand. (Closed-Leaf check-in: 163bfae858 user: drh tags: micro-optimizations) | |
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2014-09-17
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| 23:37 | Performance improvement and slight size reduction to the comparison operators in the VDBE. (check-in: 14052a7d08 user: drh tags: micro-optimizations) | |
| 16:41 | In the Mem object, stop requiring that Mem.xDel be NULL when the MEM_Dyn bit is clear. Also reduce the amount of initialization of Mem objects. All for a small size reduction and performance increase. (check-in: fdddb477c8 user: drh tags: micro-optimizations) | |
| 14:52 | Improved interface to the Mem object handling. Small size reduction and performance increase. (check-in: 4e43784432 user: drh tags: micro-optimizations) | |
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2014-09-16
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| 21:54 | Continuing cleanup of memory register memory allocation handling. (check-in: 2598aedc5d user: drh tags: micro-optimizations) | |
| 20:05 | Make sure registers are cleared properly prior to being used to store the result of an OP_Column operator. (check-in: 78fb8838d8 user: drh tags: micro-optimizations) | |
| 18:22 | Simplification of the OP_Column logic for the case of rows with overflow. (check-in: f73678038d user: drh tags: micro-optimizations) | |
| 14:55 | Remove an unused parameter from sqlite3VdbeIdxRowid(). This is cosmetic only as the C-compiler optimizers were already omitting this parameter on amalgamation builds. (check-in: a10a6bba49 user: drh tags: micro-optimizations) | |
| 14:37 | Reduce the number of arguments to RecordCompare functions from 4 to 3, resulting in a small performance increase. (check-in: 8239c35aed user: drh tags: micro-optimizations) | |
| 14:16 | Reorder the elements of the Mem object for a small size reduction and performance improvement. Moved into a branch because MSVC is unable to handle named structure initializer on nullMem. (check-in: 0be3019ed7 user: drh tags: micro-optimizations) | |
| 13:30 | Changes to sqlite3VdbeRecordUnpack() to make it slightly smaller and faster. (check-in: 8fb90da77c user: drh tags: trunk) | |
| 03:24 | Performance improvement to the sqlite3MemCompare() routine by factoring out sqlite3BlobCompare(). (check-in: 20ed2321b0 user: drh tags: trunk) | |
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2014-09-15
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| 16:53 | Fix tool/showwal.c so that it handles WAL files that contain 64KiB pages. (check-in: 4060efb646 user: dan tags: trunk) | |
| 16:50 | Avoid attempting to call the xFetch() method of an sqlite3_io_methods object with a version number less than 3. (check-in: dedaa6fb3d user: dan tags: trunk) | |
| 14:59 | Remove the EXPENSIVE_ASSERTS in pcache.c having to do with the pSynced field of the Pcache object, as they are incorrect, as revealed by recent pcache enhancements. (check-in: 69a6456077 user: drh tags: trunk) | |
| 14:46 | Do not flatten aggregate subqueries that contain min() or max() functions so that if the min()/max() are discarded by the outer query, they still function and cause non-aggregate expression to be evaluated on the minimal or maximal row. (check-in: 0bdf1a086b user: drh tags: trunk) | |
| 11:14 | Adjust comments to show that subquery flattening restriction (10) was removed from the code back in 2005. This is a comment change only. (check-in: 4ff0eb96bc user: drh tags: trunk) | |
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2014-09-12
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| 20:30 | Small performance improvement to the dirty list handling in the pager. (check-in: b332a84d51 user: drh tags: trunk) | |