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100 check-ins occurring around 9402f81fade5fcae.
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2012-09-28
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| 00:44 | Query planner enhancements to be more agressive about optimizing out ORDER BY clauses - in particular the query planner now has the ability to omit ORDER BY clauses that span multiple tables in a join. (check-in: 1e874629 user: drh tags: trunk) | |
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2012-09-27
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| 23:27 | Fix some corner case behavior in the new ORDER BY optimization logic. Remove the SQLITE_OrderByIdx bit from the SQLITE_TESTCTRL_OPTIMIZATIONS mask, since enabling it caused many TH3 tests to fail when the NO_OPT configuration parameter was engaged, and since there really isn't any need to turn that optimization off. The SQLITE_OrderByIdxJoin bit remains. (Closed-Leaf check-in: 98b63371 user: drh tags: qp-enhancements) | |
| 21:03 | Modify generation of resource header file for MSVC so that it can work from outside the working directory. (check-in: 20caf80c user: mistachkin tags: trunk) | |
| 19:53 | More test cases an bug fixes for the ORDER BY optimization of joins. All veryquick tests now pass. (check-in: 0d573320 user: drh tags: qp-enhancements) | |
| 17:31 | Test cases and bug fixes applied to the ORDER BY optimization for joins. Some test cases fail, but except for the new orderby1.test failures, all failures appear to be issues with the tests, not with the core code. (check-in: 75cda864 user: drh tags: qp-enhancements) | |
| 15:05 | Add more bits to the bit vector that is used to disable optimizations for built-in test. Add specific bit patterns to disable ORDER BY using an index in general and for joins. Use macros to test for bits in the disabled-optimization bit vector, in order to make the code clearer. (check-in: d2fcba1e user: drh tags: qp-enhancements) | |
| 14:11 | Enable ORDER BY clauses that span joins to be optimized out. (check-in: c29538f9 user: drh tags: qp-enhancements) | |
| 12:11 | Merge the "PRAGMA busy_timeout" change into trunk. (check-in: 1a679a1e user: drh tags: trunk) | |
| 12:05 | Further tweaks to the query planner logic in preparation for adding ORDER BY opt-out for joins. (check-in: 53efc10a user: drh tags: qp-enhancements) | |
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2012-09-26
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| 23:17 | Further refactoring of the ORDER BY related query-planning logic in order to make it easier to extend to support optimizing out ORDER BY on joins. No actual behavior changes, yet. (check-in: 96496dda user: drh tags: qp-enhancements) | |
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2012-09-25
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| 20:43 | Augment the WhereBestIdx structure to pass down into the query planner information that might be used to better detect ORDER BY and DISTINCT optimizations spanning multiple tables of a join. (check-in: 4226e51f user: drh tags: qp-enhancements) | |
| 14:29 | Pass information around between the major routines of the query planner using a single pointer to a structure rather than a long list of parameters. (check-in: 1104d42e user: drh tags: qp-enhancements) | |
| 12:45 | Merge updates from trunk. (check-in: 4a470741 user: mistachkin tags: configReadOnly) | |
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2012-09-24
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| 19:50 | Remove an unused subfunction parameter and an obsolete comment from the query planner logic in where.c. (check-in: 349a55cd user: drh tags: trunk) | |
| 15:30 | Change the internal sqlite3WhereBegin() to report that the ORDER BY clause is satisfied by indices using the WhereInfo.nOBSat field of the returned structure. (check-in: 22989f35 user: drh tags: trunk) | |
| 11:43 | Update documentation to describe the threadsafety of sqlite3_enable_shared_cache(). (check-in: e081890c user: drh tags: trunk) | |
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2012-09-21
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| 22:50 | Enable query planner tracing using the new (and undocumented) ".wheretrace 1" command in the command-line shell if both the shell and the core are compiled with SQLITE_DEBUG and SQLITE_ENABLE_WHERETRACE. This is not a supported API. Use for testing and debugging only. (check-in: 1be4b16b user: drh tags: trunk) | |
| 13:40 | Command-line shell enhancements: Added the ".print" command. Enhanced the ".width" command so that negative widths will right-justify. (check-in: a1d8269d user: drh tags: trunk) | |
| 00:04 | Consolidate more of the DISTINCT processing logic into a single spot in the code. Reduce the number of OP_Column operations needed to perform a WHERE_DISTINCT_ORDERED. (check-in: 79e922f7 user: drh tags: trunk) | |
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2012-09-20
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| 15:41 | Continuing incremental enhancements of SELECT code generation: Remove the Select.affinity field. Use SelectDest.affSdst instead. (check-in: cf40b7b5 user: drh tags: trunk) | |
| 14:26 | Refactoring of DISTINCT code. Change the name of the local variable "distinct" to "distinctTab". Generate cleaner code w/o unnecessary P4 and P5 values on the OP_Null for WHERE_DISTINCT_ORDERED. (check-in: 0cda241a user: drh tags: trunk) | |
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2012-09-19
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| 21:15 | Tighter VDBE code for the WHERE_DISTINCT_ORDERED case of DISTINCT keyword handling. (check-in: 94b48064 user: drh tags: trunk) | |
| 17:31 | Add comments to the WHERE_DISTINCT_* macros. No changes to code. (check-in: 82320501 user: drh tags: trunk) | |
| 00:35 | Merge the covering-index-scan optimization into trunk. (check-in: ddd5d789 user: drh tags: trunk) | |
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2012-09-18
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| 23:21 | Silence harmless compiler warning seen with SQLITE_OMIT_DEPRECATED. (check-in: c5cee969 user: mistachkin tags: trunk) | |
| 19:29 | Enhance IN processing to allow efficient use of indices with numeric affinities. Add test cases for IN processing that would have spotted the error in the [2be661a48023f4] check-in. (check-in: 5ded9b68 user: drh tags: trunk) | |
| 17:32 | This change generates incorrect code when there are two or more IN operators in the WHERE clause that are both used by the same index. Was: Omit an unnecessary OP_IfNull that immediately follows an OP_Rowid. (Closed-Leaf check-in: 2be661a4 user: drh tags: mistake) | |
| 17:08 | Enhancements to the comments on sqlite3FindInIndex(). No code changes. (check-in: b1a4c394 user: drh tags: trunk) | |
| 14:00 | Add the stack_usage.tcl script for analyzing the output of objdump on the amalgamation and estimating the sizes of stack frames on each function. (check-in: 030013ff user: drh tags: trunk) | |
| 13:20 | Update the vdbe-compress.tcl script so that it accepts variable declarations inside of #ifdef...#endif. This enhancement is needed due to the change of check-in [39866c0ede5d6ef4]. (check-in: e7db056a user: drh tags: trunk) | |
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2012-09-17
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| 21:24 | Make sure the WHERE_IDX_ONLY flag is not set on query plans that will not be using an index. (Closed-Leaf check-in: 698b2a28 user: drh tags: fullscan-covering-index) | |
| 20:44 | Add the ability to disable the covering-index-scan optimization at compile-time, start-time, or at run-time. Add test cases to check this configurability. (check-in: ccb8ecc3 user: drh tags: fullscan-covering-index) | |
| 19:26 | Merge recent trunk changes into the fullscan-covering-index branch. (check-in: 1c0bf030 user: drh tags: fullscan-covering-index) | |
| 19:12 | Remove obsolete bits from the bitvector that defines disabled optimizations in the SQLITE_TESTCTRL_OPTIMIZATIONS verb of sqlite3_test_control(). (check-in: 4c21ee2d user: drh tags: trunk) | |
| 18:56 | Remove an unnecessary parameter from sqlite3Utf8Read() resulting in a slight performance increase. (check-in: 8b962c94 user: drh tags: trunk) | |
| 17:16 | Make sure the KeyInfo.aSortOrder array is always allocated so that we never have to test for KeyInfo.aSortOrder==0 in performance-critical loops. (check-in: 45793f0b user: drh tags: trunk) | |
| 15:36 | Performance enhancement in the sqlite3VdbeSerialType() routine. (check-in: ad298f52 user: drh tags: trunk) | |
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2012-09-15
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| 18:45 | Attempt to use a covering index even on a full table scan, under the theory that the index will be smaller and require less disk I/O and thus be faster. (check-in: cfaa7bc1 user: drh tags: fullscan-covering-index) | |
| 13:39 | Make sure the name of rollback journal files are double-zero terminated when they are passed into the VFS. (check-in: 8711a844 user: drh tags: trunk) | |
| 13:29 | Factor out the code that generates a co-routine for evaluating the SELECT on the RHS of an INSERT statement so that the same code can potentially be reused in other places. (check-in: a93ee09c user: drh tags: trunk) | |
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2012-09-13
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| 19:59 | Improved alignment of fields in the Expr object gives an 8-byte size reduction on 64-bit machines. (check-in: 6b252a0d user: drh tags: trunk) | |
| 16:12 | Fix WAL capability checking in one of the test files. (check-in: 0ebe7cc5 user: mistachkin tags: trunk) | |
| 15:26 | Fix an unused variable warning with SQLITE_OMIT_WAL. (check-in: 39866c0e user: mistachkin tags: trunk) | |
| 15:24 | Improved reporting of filename translation errors in the Windows VFS. (check-in: eb0f1c29 user: mistachkin tags: trunk) | |
| 14:42 | Reduce the size of the Table object by 16 bytes on 64-bit machines, mostly by avoiding intermixing pointer fields with integer fields. (check-in: 1cb9aedf user: drh tags: trunk) | |
| 14:22 | Change boolean fields in the Column object from unsigned characters into bits in a single bit mask variable. (check-in: 4163f5f1 user: drh tags: trunk) | |
| 12:10 | Add the RTREE_INT_ONLY configuration parameter to the compile-time options logic. (check-in: 98b971fb user: drh tags: trunk) | |
| 01:51 | Allow SQLite to work on Win32 with SQLITE_OS_WINNT=0 as long as WAL is disabled. (check-in: c1a85570 user: mistachkin tags: trunk) | |
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2012-09-12
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| 18:45 | Add an implementation of the REGEXP operator and function. Only defined if compiled with SQLITE_ENABLE_REGEXP. (Closed-Leaf check-in: 8398f77c user: drh tags: regexp) | |
| 00:11 | Update version number to 3.7.15. Delete some obsolete build scripts. (check-in: 9402f81f user: drh tags: trunk) | |
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2012-09-11
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| 02:00 | Added sqlite3_errstr API to translate a result code to the corresponding error message. (check-in: bf8a9ca5 user: mistachkin tags: trunk) | |
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2012-09-10
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| 23:44 | Correct two duplicated test names. (check-in: ced49974 user: mistachkin tags: trunk) | |
| 15:02 | Remove the stale implementation of the ifnull and coalesce functions - code that has been commented out for ages. No functional changes. (check-in: c2ad6911 user: drh tags: trunk) | |
| 10:29 | Initial prototype of SQLITE_CONFIG_READONLY. (check-in: 7c340165 user: mistachkin tags: configReadOnly) | |
| 09:33 | Avoid using the sqlite3ErrStr function in the Tcl package if USE_SYSTEM_SQLITE is defined. (check-in: a716b9a3 user: mistachkin tags: trunk) | |
| 08:48 | Make header comments for some Tcl test commands more consistent. No changes to code. (check-in: af870ca9 user: mistachkin tags: trunk) | |
| 07:56 | More test cleanup. (Closed-Leaf check-in: b8d5359b user: mistachkin tags: testClean) | |
| 07:29 | Refine error messages in the sqlite3 Tcl command when a NULL database connection is returned from sqlite3_open_v2. (check-in: f260d7d5 user: mistachkin tags: trunk) | |
| 06:02 | Fix typo in documentation for sqlite3_open_v2. No changes to code. (check-in: b532120a user: mistachkin tags: trunk) | |
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2012-09-07
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| 20:10 | Correct two test names to make them unique. (Closed-Leaf check-in: 43e474d3 user: mistachkin tags: busy-timeout-pragma) | |
| 18:49 | Have PRAGMA busy_timeout return 0 if the busy handler has been changed or cancelled. (check-in: 7be5bc36 user: drh tags: busy-timeout-pragma) | |
| 16:46 | Add an experimental busy_timeout pragma to facilitate access to the sqlite3_busy_timeout() interfaces for programmers that are working from behind a language wrapper that does not expose that interface. (check-in: 22ebc668 user: drh tags: busy-timeout-pragma) | |
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2012-09-04
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| 21:34 | Avoid repeating calls to the sqlite3_trace() callback when the same statement is evaluted multiple times by sqlite3_step() due to an SQLITE_SCHEMA reprepare. (check-in: 39f763bf user: drh tags: trunk) | |
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2012-09-03
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| 15:42 | Version 3.7.14 (check-in: c0d89d4a user: drh tags: trunk, release, version-3.7.14) | |
| 12:40 | Fix compiler warnings in test_spellfix1.c (check-in: ebb08d0b user: drh tags: trunk) | |
| 11:39 | Add resources describing the version number and other information to EXEs and DLLs generated using MSVC. (check-in: a15a7084 user: drh tags: trunk) | |
| 11:14 | Insert additional tab character. (Closed-Leaf check-in: 3af7c1a6 user: mistachkin tags: win32Resources) | |
| 11:01 | Linking and cleaning fixes for the tclsqlite3.exe target in the MSVC makefile. (check-in: 96d43c7a user: mistachkin tags: win32Resources) | |
| 10:32 | Add Win32 version resources to the applicable binaries built by the MSVC makefile. (check-in: e2f27d28 user: mistachkin tags: win32Resources) | |
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2012-08-31
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| 14:55 | In the spellfix phonehash() function, add letter W into the same character class as V. (check-in: 75361013 user: drh tags: trunk) | |
| 14:23 | Update with latest trunk changes. (check-in: 87995dc9 user: dan tags: sessions) | |
| 14:10 | Merge in latest trunk changes. (check-in: bc9b9cd0 user: dan tags: apple-osx) | |
| 12:31 | Changes for ERROR_PATH_NOT_FOUND in addition to ERROR_FILE_NOT_FOUND in winAccess(). (check-in: 527340ab user: drh tags: trunk) | |
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2012-08-30
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| 20:24 | Exclude the atof1.test test script from the valgrind permutations test since valgrind sets up the floating point hardware in an unusual way that makes atof1 fail. (check-in: d3cf6832 user: drh tags: trunk) | |
| 11:22 | Fix an out-of-bounds read in the demonstration code in test_spellfix.c. (check-in: 59194311 user: dan tags: trunk) | |
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2012-08-29
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| 10:28 | Fix a typo in a comment in vdbe.c. No changes to code. (check-in: 9fbe858b user: drh tags: trunk) | |
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2012-08-28
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| 14:45 | Fix a case where SQLite was failing to detect a syntax error in queries like "SELECT ... FROM (<select-1> UNION ALL <select-2>)" when <select-1> and <select-2> return different numbers of result columns. (check-in: 200a8135 user: dan tags: trunk) | |
| 04:20 | Issue a log message if the temporary directory has not been set when running on WinRT. (check-in: 9ee39102 user: mistachkin tags: trunk) | |
| 01:44 | Enable the use of a simpler command line when cross-compiling in the MSVC build environment. (check-in: 8ade136a user: mistachkin tags: trunk) | |
| 00:17 | Formatting changes to the C code example in the documentation for sqlite3_temp_directory(). No changes to code. (check-in: 5b4b3978 user: drh tags: trunk) | |
| 00:09 | Update API docs to include notes about the WinRT temporary directory. No changes to code. (check-in: eaeeb069 user: mistachkin tags: trunk) | |
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2012-08-27
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| 21:19 | Add to #undef statements to the command-line shell, go make sure that the macros definitions that follow do not collide with system definitions. (check-in: 24420d6d user: drh tags: trunk) | |
| 14:39 | Fix an incorrect assert in the virtual table logic - it could fire following an I/O error after sqlite3_close_v2() was added. (check-in: 4ccc18e9 user: drh tags: trunk) | |
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2012-08-25
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| 10:01 | Fix all known instances of 'repeated the' style typos in comments. No changes to code. (check-in: 9b19b847 user: mistachkin tags: trunk) | |
| 02:11 | Fix a harmless compiler warning. (check-in: 929b5184 user: drh tags: trunk) | |
| 01:38 | Merge all the latest trunk changes into the apple-osx branch. (check-in: 6723add4 user: drh tags: apple-osx) | |
| 01:21 | Merge the latest trunk changes into the sessions branch. (check-in: aa62d688 user: drh tags: sessions) | |
| 00:49 | Backport check-in [62678be3df35cd]: When the same index is used for all OR-terms in a WHERE clause, then try to use that index as a covering index. (Leaf check-in: 865dfcba user: drh tags: branch-3.7.2) | |
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2012-08-24
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| 23:56 | When the same index is used for all OR-terms in a WHERE clause, then try to use that index as a covering index. (check-in: 62678be3 user: drh tags: trunk) | |
| 23:24 | Move field WhereLevel.pCovidx inside the union to WhereLevel.u.pCovidx. (Closed-Leaf check-in: b722143d user: drh tags: multi-or-covering-index) | |
| 21:54 | Remove a NEVER() that is in fact reachable on an OOM. This probably has nothing to do with the multi-or-covering-index change but just happened to be found while testing that change. (check-in: 5499af53 user: drh tags: multi-or-covering-index) | |
| 19:58 | Another test for whereD.test. (check-in: 29d58617 user: dan tags: multi-or-covering-index) | |
| 19:52 | Add extra tests to whereD.test. (check-in: 7e961eef user: dan tags: multi-or-covering-index) | |
| 18:44 | Fix a problem to do with multi-or queries and automatic indexes. (check-in: a3e26038 user: dan tags: multi-or-covering-index) | |
| 17:52 | More test cases for OR-optimization covering indices. (check-in: e5c3190c user: drh tags: multi-or-covering-index) | |
| 15:29 | Additional test cases for OR-optimization with covering indices, including one test case that currently fails. (check-in: d8b7ab37 user: drh tags: multi-or-covering-index) | |
| 10:52 | Experimental change to support the covering index optimization for queries with OR terms in the WHERE clause that search a single index more than once. (check-in: 1dc8c7c7 user: dan tags: multi-or-covering-index) | |
| 01:07 | Merge the nested aggregate query enhancements into trunk. (check-in: d4cd6017 user: drh tags: trunk) | |
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2012-08-23
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| 22:45 | Merge changes for the new sqlite3_win32_set_directory API to trunk. (check-in: 20f184f2 user: mistachkin tags: trunk) | |
| 19:46 | Add test cases and fix bugs associated with the previous check-in enhancements to nested aggregate subquery processing. (Closed-Leaf check-in: 00b1dc71 user: drh tags: nested-agg) | |