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100 check-ins occurring around fc4f4d1eccec2e09.
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2015-06-25
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| 15:04 | Minor optimization to allocateSpace(). (check-in: d007bc33 user: drh tags: trunk) | |
| 13:03 | Enhance the Btree object to remember whether or not it is holding an Incrblob cursor. Use this knowledge to improve performance in the common case where it does not. (check-in: 476b1156 user: drh tags: trunk) | |
| 02:26 | Remove a line of code that doesn't do any useful work. (check-in: 3ee888be user: drh tags: trunk) | |
| 02:25 | Increase the default timeout on fuzzcheck to 120 seconds - sufficient for running under valgrind on a slow workstation. (check-in: fad0eacc user: drh tags: trunk) | |
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2015-06-24
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| 23:44 | Add the --timeout option to fuzzcheck. (check-in: a8f4f7fa user: drh tags: trunk) | |
| 23:17 | Fix fuzzcheck so that it works with SQLITE_OMIT_PROGRESS_CALLBACK. (check-in: 7a9c4eb3 user: drh tags: trunk) | |
| 18:22 | Add "ON CONFLICT" handling to the spellfix module. (check-in: 07937a81 user: drh tags: trunk) | |
| 17:21 | Add "ON CONFLICT" handling to the spellfix module. (Closed-Leaf check-in: 1d04def7 user: dan tags: spellfix-constraints) | |
| 14:45 | In the fuzzcheck test program, use the progress handler to limit the number of VDBE cycles to avoid getting stuck if the SQL under test contains an infinite CTE loop. Add the --limit-vdbe command-line option. (check-in: fbf9c432 user: drh tags: trunk) | |
| 14:36 | Fix the progress handler so that it does not fire too soon during an sqlite3_step() call other than the first. (check-in: b41ef5d6 user: drh tags: trunk) | |
| 13:32 | Fix a harmless compiler warning. (check-in: 3b6fa95e user: drh tags: trunk) | |
| 13:25 | Rig the fuzzcheck test program so that it times out after 10 seconds in case of an infinite loop in the test case. (check-in: 659cfc9d user: drh tags: trunk) | |
| 13:05 | Update the database fuzz test cases to cover all recent findings. (check-in: 47ba7d96 user: drh tags: trunk) | |
| 12:44 | Add the --rebuild object to fuzzcheck. (check-in: db87664a user: drh tags: trunk) | |
| 12:24 | Prevent an infinite loop while searching a corrupt freelist. (check-in: 4e5424fe user: drh tags: trunk) | |
| 12:07 | Strengthen the new balance_nonroot() code against various corrupt database problems. (check-in: 5ba98343 user: drh tags: trunk) | |
| 10:46 | Adjustment to a malloc test so that it accepts a narrow range of values to account for variations in malloc subsystems. (check-in: e0195070 user: drh tags: trunk) | |
| 01:07 | Remove an invalid NEVER() and add a test case to cover it. (check-in: 14b73d20 user: drh tags: trunk) | |
| 00:05 | Performance optimization on balance_nonroot() and related routines. 2.6% faster overall with a size increase of less than 750 bytes. (check-in: 25131e70 user: drh tags: trunk) | |
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2015-06-23
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| 23:31 | Mark some branches as unreachable after the recent change that recognizes mismatch result set sizes on compound SELECT statements sooner. (check-in: c8d1f305 user: drh tags: trunk) | |
| 21:35 | Testability improvement. (Closed-Leaf check-in: eed6a331 user: drh tags: btree-opt2) | |
| 18:47 | Improve test coverage of fts5. (check-in: df5ccea8 user: dan tags: fts5) | |
| 18:24 | Multiple overflow cells are always adjacent and sequential. Exploit this invariant for a small size reduction and performance increase and add assert()s to prove the invariant. (check-in: f77f2f48 user: drh tags: btree-opt2) | |
| 17:09 | Faster loading of cell pointers into the b.apCell array in balance_nonroot. (check-in: fda89b05 user: drh tags: btree-opt2) | |
| 16:00 | Avoid unnecessary cachedCellSize() calls in the cell partition adjustment phase of balance_nonroot(). (check-in: 6319ee12 user: drh tags: btree-opt2) | |
| 15:36 | Change pageInsertArray() and pageFreeArray() so that they use the CellArray object and compute cell sizes as needed, resulting in smaller and faster code. (check-in: f7f41818 user: drh tags: btree-opt2) | |
| 15:06 | Merge latest trunk changes with this branch. Add tests for columnsize=0. (check-in: ef44c71a user: dan tags: fts5) | |
| 14:49 | Improvements to the way balance_nonroot() constructs the b.apCell array of pointers to cells. (check-in: ee44bb25 user: drh tags: btree-opt2) | |
| 13:02 | Merge the compound SELECT operator fix from trunk. (check-in: a7be554f user: drh tags: btree-opt2) | |
| 12:19 | Test that the left and right sides of a compound SELECT operator have the same number of expressions in the expanded expression list before beginning to generate code. (check-in: 4df852ce user: dan tags: trunk) | |
| 02:37 | Avoid computing cell sizes in balance_nonroot() until they are really needed. This gives an overall 1.7% performance gain for about 1000 extra bytes of code space. (check-in: 43844537 user: drh tags: btree-opt2) | |
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2015-06-22
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| 20:02 | Change the way that balance_nonroot() partitions cells between the sibling pages such that a scan of the cell size array is not required. (check-in: 16872871 user: drh tags: btree-opt2) | |
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2015-06-20
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| 18:13 | Split out all four cases of cellSizePtr() into different methods, each optimized for the specific page type. This gives a 0.36% performance increase at a cost of about 300 bytes of code. (Leaf check-in: 522502ec user: drh tags: btree-opt) | |
| 14:11 | Update the fuzztest data using the latest test vectors discovered by AFL. (check-in: b97f9cf7 user: drh tags: trunk) | |
| 13:18 | Make sure that the likelihood() function does not mess up generation of result-set code when it is used (inappropropriately) in a result-set expression. (check-in: 7cdbae62 user: drh tags: trunk) | |
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2015-06-19
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| 20:31 | Performance improvements in btreeParseCell() by inlining the varint decoder. (check-in: 172a864d user: drh tags: trunk) | |
| 20:08 | Fix corner cases involving corrupt varint values in record headers. (Closed-Leaf check-in: 3189116b user: drh tags: btree-opt) | |
| 18:24 | Performance improvements in btreeParseCell() by inlining the varint decoder. (check-in: faab0ed9 user: drh tags: btree-opt) | |
| 17:19 | Add the MemPage.xParseCell method and provide various implementations (variations on the former btreeParseCellPtr()) depending on the page type. (check-in: 41d03d88 user: drh tags: trunk) | |
| 15:07 | Make cellSizePtr() a method on the MemPage object, with alternative implementations depending on the page type. This results is a small performance improvement and size reduction. (check-in: 02f7e9d7 user: drh tags: trunk) | |
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2015-06-18
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| 15:26 | Further #ifdef changes in speedtest1.c in order to support SQLite back to version 3.3.9 and perhaps even earlier. (check-in: 9246eca5 user: drh tags: trunk) | |
| 14:32 | Pervent the likelihood() function from moving ON clause terms of a LEFT JOIN into the WHERE clause. Fix for ticket [5f60b11fc8e23490e2] (check-in: ed96e14a user: drh tags: trunk) | |
| 14:09 | Show the values of Expr.flag in the AST of ".selecttrace" (check-in: a84d1004 user: drh tags: trunk) | |
| 12:37 | Add #ifdefs to some features speedtest1.c so that it compiles with older versions of SQLite, going back to version 3.5.1. (check-in: f50dd154 user: drh tags: trunk) | |
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2015-06-17
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| 23:28 | Performance improvement in sqlite3VdbeMemShallowCopy() for the common case where the receiver does not require prior resource deallocation. (check-in: d718ea36 user: drh tags: trunk) | |
| 19:06 | Use 'binary' mode for popen with MSVC. (Closed-Leaf check-in: 7b84641e user: mistachkin tags: popenMsvc) | |
| 18:57 | Improve spacing and comment style for the shell. No changes to code. (check-in: 5b547da0 user: mistachkin tags: trunk) | |
| 18:24 | Improved comments on the fuzzcheck.c test program. No changes to code. (check-in: a7e27d19 user: drh tags: trunk) | |
| 18:18 | Merge all recent enhancements and fixes from trunk. (check-in: 199bfb67 user: drh tags: sessions) | |
| 17:08 | Fix a uninitialized variable use in the command-line shell when the ".open" command is invoked without any arguments. (check-in: fc4f4d1e user: drh tags: trunk) | |
| 13:20 | Performance optimization and comment fixes for the LIKE and GLOB operators. (check-in: c89d7726 user: drh tags: trunk) | |
| 02:11 | Make getCellInfo() a real function instead of a macro, for a size reduction and a 0.2% performance gain. (check-in: 55c393ea user: drh tags: trunk) | |
| 01:31 | Optimizations to two VDBE accessory routines for a 0.2% performance increase. (check-in: 66d033b9 user: drh tags: trunk) | |
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2015-06-16
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| 16:39 | Ensure that the CREATE TABLE AS statement correctly undoes partial changes to the sqlite_master table if the SELECT on the right-hand side aborts with an error. Fix for ticket [873cae2b6e25b] (check-in: 400e025e user: drh tags: trunk) | |
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2015-06-15
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| 16:40 | Adjust ICU tests to account for recent changes in the official Unicode definition of whitespace. (check-in: 08165253 user: drh tags: trunk) | |
| 16:09 | Fix a harmless comment typo. No code changes. (check-in: ae687652 user: drh tags: trunk) | |
| 14:43 | Fix harmless compiler warnings. (check-in: b0badb99 user: drh tags: trunk) | |
| 12:58 | Improved detection of database corruption in freeSpace(). (check-in: 29bcb568 user: drh tags: trunk) | |
| 10:49 | Comment typo fix. No code changes. (check-in: 17f185ad user: drh tags: trunk) | |
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2015-06-13
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| 19:05 | Added test cases based on Bruce Momjian's talk on SQL NULLs. (Leaf check-in: 68c168b5 user: drh tags: is-distinct-from) | |
| 11:48 | Add the IS DISTINCT FROM and IS NOT DISTINCT FROM operators. (check-in: 0be44782 user: drh tags: is-distinct-from) | |
| 11:19 | Omit mutex calls in pcache1 when the mutex is NULL, for a significant performance improvement. (check-in: caf8f574 user: drh tags: trunk) | |
| 11:10 | Avoid unnecessary mutex usage in pcache1, for a significant speedup. (Closed-Leaf check-in: dcf4fb8d user: drh tags: faster-pcache1-fetch) | |
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2015-06-12
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| 13:49 | Add a fast-path implementation of pcache1Fetch() for the common case of separate caches that do not use a mutex. (check-in: 760700ed user: drh tags: faster-pcache1-fetch) | |
| 13:04 | Minor performance optimization in pcache1.c. (check-in: 2e8ad2ea user: drh tags: trunk) | |
| 12:54 | Add the OP_ColumnsUsed opcode (when compiled with SQLITE_ENABLE_COLUMN_USED_MASK) as a hint to the b-tree layer as to which columns of a btree cursor will be used. (check-in: 711a176c user: drh tags: trunk) | |
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2015-06-11
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| 18:01 | Merge recent trunk enhancements and fixes. (check-in: c39cb0e2 user: drh tags: sessions) | |
| 17:58 | Merge trunk fixes. (Leaf check-in: 1df8cbbe user: drh tags: view-optimization) | |
| 17:26 | Add the sqlite3changegroup_xxx() APIs to the sessions module. For combining multiple changesets or patchsets. (check-in: 0c1a901c user: dan tags: sessions) | |
| 14:19 | Remove stray outputs from the test suite. (check-in: afc6db9b user: drh tags: trunk) | |
| 13:58 | When generating code for partial indexes, be sure not to modify the index condition expression in the schema. (check-in: e63d01c6 user: drh tags: trunk) | |
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2015-06-10
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| 23:02 | More test output refinements. (Closed-Leaf check-in: e64a5681 user: mistachkin tags: testerOutput) | |
| 22:51 | Remove possibly stray output from various tests. (check-in: f38e0be5 user: mistachkin tags: testerOutput) | |
| 22:03 | Fix minor typo in the quicktest MSVC makefile target. (check-in: 75b65f9d user: mistachkin tags: trunk) | |
| 20:00 | Merge enhancements from trunk. (check-in: 0e23a079 user: drh tags: view-optimization) | |
| 18:53 | "test" targets on all makefiles use --verbose=file --output=test-out.txt. Add the new "quicktest" target to all makefiles - designed to run in under three minutes. The --quick option on releasetest.tcl now uses quicktest. (check-in: 6ddef2ad user: drh tags: trunk) | |
| 17:20 | Resolve FROM-clause subqueries after query planning instead of before. Greatly reduce the estimated cost of automatic indexes for VIEWs and ephemeral tables since performance problems there cannot be mitigated via a CREATE INDEX. (check-in: a1eaf171 user: drh tags: view-optimization) | |
| 14:27 | Avoid passing constraints that are unusable due to LEFT or CROSS joins to virtual table xBestIndex() methods. (check-in: 7b446771 user: dan tags: trunk) | |
| 10:45 | Fix the fts5 xRename() method. (check-in: 0f7fd513 user: dan tags: fts5) | |
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2015-06-09
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| 20:58 | Add the "columnsize=" option to fts5, similar to fts4's "matchinfo=fts3". (check-in: aa12f9d9 user: dan tags: fts5) | |
| 15:58 | Add the --output=$file and --verbose=(0|1|file) options to tester.tcl. (check-in: f7b2c703 user: dan tags: trunk) | |
| 10:58 | Remove some repeated lines of source code. Probably introduced by careless cut'n'pasting. (Closed-Leaf check-in: a34cd71c user: dan tags: vtab-left-join) | |
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2015-06-08
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| 22:59 | Code refactoring to try to shift FROM-clause subquery manifesting until after the query planner runs. Except this does not currently work because the query planner needs an estimated of the number of rows in the manifested table. Work in progress. (check-in: cabf2187 user: drh tags: view-optimization) | |
| 19:15 | Add the valgrindfuzz target to unix makefile. (check-in: e62aed01 user: drh tags: trunk) | |
| 18:48 | If a query contains "FROM t1 LEFT JOIN t2, t3, t4", ensure that tables t3 and t4 are not scanned before t2. The trunk already does this. (check-in: 0d9edfab user: dan tags: vtab-left-join) | |
| 18:05 | Avoid passing constraints that are unusable due to LEFT or CROSS joins to virtual table xBestIndex() methods. (check-in: 80ee56dd user: dan tags: vtab-left-join) | |
| 17:42 | Fix typo in comment. No changes to code. (check-in: e49c2917 user: mistachkin tags: trunk) | |
| 17:40 | Split out some source code into new files: wherecode.c, whereexpr.c, and treeview.c. Other minor refactoring changes. (check-in: 50f33681 user: drh tags: trunk) | |
| 15:08 | Factor out the TreeView parse tree printing module into a separate file. (check-in: c32ce54c user: drh tags: view-optimization) | |
| 14:23 | Split more subfunctions of where.c out into a new whereexpr.c source file, for improved maintainability. (check-in: 46ef95c1 user: drh tags: view-optimization) | |
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2015-06-06
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| 20:12 | Split out the bulk of the actual VDBE code generation logic from where.c into a new file, leaving behind the analysis logic. This makes the original where.c smaller and hopefully easier to edit. (check-in: faa0e420 user: drh tags: view-optimization) | |
| 19:23 | Fix a comment in fts5.h. (check-in: e964b587 user: dan tags: fts5) | |
| 18:30 | Code simplifications in select.c and where.c. (check-in: 4f20ac90 user: drh tags: view-optimization) | |
| 16:28 | Fix handling of fts5 rowid constraints in the absence of a MATCH clause. Add tests to cover recently added branches. (check-in: 3a9cb648 user: dan tags: fts5) | |
| 00:18 | Minor cleanup of the sqlite3Select() procedure. (check-in: f4c90d06 user: drh tags: view-optimization) | |
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2015-06-05
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| 22:33 | Split FROM-clause subquery flattening and code generation into separate loops. (check-in: be8e3fc7 user: drh tags: view-optimization) | |
| 20:27 | Provide one final Select tree dump prior to WHERE clause analysis when ".selecttrace 0x400" tracing bit is set with SELECTTRACE_ENABLED. Analysis and debug changes only - normal builds are unaffected. (check-in: 283bf0b6 user: drh tags: trunk) | |
| 19:05 | Make use of range constraints on the rowid field of an fts5 table in full-text queries. (check-in: 32cbc0ed user: dan tags: fts5) | |
| 15:59 | Add a new opcode to the VDBE that gives the b-tree a hint about the set of columns in a table or index that are actually used by the query. (Closed-Leaf check-in: f167bba4 user: drh tags: column-usage-hint) | |
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2015-06-04
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| 12:08 | Change the name of SrcList.a[].zIndex to the more descriptive SrcList.a[0].zIndexedBy. (check-in: 6a9cf063 user: drh tags: trunk) | |