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50 check-ins occurring around 1c0bf0305ce9528a.
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2012-09-27
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| 12:05 | Further tweaks to the query planner logic in preparation for adding ORDER BY opt-out for joins. (check-in: 53efc10af9 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: 96496ddae1 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: 4226e51ff8 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: 1104d42e10 user: drh tags: qp-enhancements) | |
| 12:45 | Merge updates from trunk. (check-in: 4a470741b6 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: 349a55cd8b 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: 22989f3588 user: drh tags: trunk) | |
| 11:43 | Update documentation to describe the threadsafety of sqlite3_enable_shared_cache(). (check-in: e081890cd7 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: 1be4b16b9e 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: a1d8269da3 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: 79e922f7ae 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: cf40b7b5eb 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: 0cda241a2b 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: 94b48064db user: drh tags: trunk) | |
| 17:31 | Add comments to the WHERE_DISTINCT_* macros. No changes to code. (check-in: 8232050190 user: drh tags: trunk) | |
| 00:35 | Merge the covering-index-scan optimization into trunk. (check-in: ddd5d789e7 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: c5cee96932 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: 5ded9b6838 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: 2be661a480 user: drh tags: mistake) | |
| 17:08 | Enhancements to the comments on sqlite3FindInIndex(). No code changes. (check-in: b1a4c39499 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: 030013ff0c 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: e7db056a0d 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: 698b2a2800 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: ccb8ecc30c user: drh tags: fullscan-covering-index) | |
| 19:26 | Merge recent trunk changes into the fullscan-covering-index branch. (check-in: 1c0bf0305c 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: 4c21ee2d26 user: drh tags: trunk) | |
| 18:56 | Remove an unnecessary parameter from sqlite3Utf8Read() resulting in a slight performance increase. (check-in: 8b962c94a2 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: 45793f0b84 user: drh tags: trunk) | |
| 15:36 | Performance enhancement in the sqlite3VdbeSerialType() routine. (check-in: ad298f52ef 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: cfaa7bc128 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: 8711a8447d 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: a93ee09cdc 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: 6b252a0d1a user: drh tags: trunk) | |
| 16:12 | Fix WAL capability checking in one of the test files. (check-in: 0ebe7cc574 user: mistachkin tags: trunk) | |
| 15:26 | Fix an unused variable warning with SQLITE_OMIT_WAL. (check-in: 39866c0ede user: mistachkin tags: trunk) | |
| 15:24 | Improved reporting of filename translation errors in the Windows VFS. (check-in: eb0f1c292e 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: 1cb9aedfcf 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: 4163f5f194 user: drh tags: trunk) | |
| 12:10 | Add the RTREE_INT_ONLY configuration parameter to the compile-time options logic. (check-in: 98b971fb24 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: c1a8557008 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: 8398f77c5a user: drh tags: regexp) | |
| 00:11 | Update version number to 3.7.15. Delete some obsolete build scripts. (check-in: 9402f81fad 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: bf8a9ca5b5 user: mistachkin tags: trunk) | |
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2012-09-10
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| 23:44 | Correct two duplicated test names. (check-in: ced49974a9 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: c2ad691174 user: drh tags: trunk) | |
| 10:29 | Initial prototype of SQLITE_CONFIG_READONLY. (check-in: 7c3401657a user: mistachkin tags: configReadOnly) | |
| 09:33 | Avoid using the sqlite3ErrStr function in the Tcl package if USE_SYSTEM_SQLITE is defined. (check-in: a716b9a309 user: mistachkin tags: trunk) | |
| 08:48 | Make header comments for some Tcl test commands more consistent. No changes to code. (check-in: af870ca982 user: mistachkin tags: trunk) | |
| 07:56 | More test cleanup. (Closed-Leaf check-in: b8d5359bb7 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: f260d7d567 user: mistachkin tags: trunk) | |