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100 ancestors of [8f448745]

2012-10-04
12:10
Yet another refactoring of ORDER BY logic in the query planner. This particular check-in works mostly, but still has a few minor issues. check-in: 8f448745 user: drh tags: qp-enhancements
2012-10-03
18:09
Fix an out-of-order memset() that occurs before all variable declarations are finished. Also fix a line that exceeds the 80-character line length limit. check-in: ba2f492f user: drh tags: trunk
12:56
Update the query planner to recognize more cases where ORDER BY clauses can be optimized out. Add test cases to verify correct behavior of the ORDER BY optimization when the covering-index-scan optimization is disabled. Fix a harmless compiler warning in the TCL interface. check-in: 956e4d7f user: drh tags: trunk
12:38
Fix a query planner problem that only occurs when covering-index-scan is disabled. Fix to tests whose output changed due to the new and more aggressive ORDER BY optimization. Closed-Leaf check-in: 0f9bb901 user: drh tags: qp-enhancements
11:02
Fix the TCL interface so that SQL functions implemented in TCL honor the "nullvalue" setting. Also remove from the TCL interface some unused legacy UTF8 translation code left over from SQLite2. check-in: c1f10a26 user: drh tags: trunk
00:25
Further attempts to optimize out unnecessary ORDER BY clauses. check-in: 6744d9a3 user: drh tags: qp-enhancements
2012-10-02
22:54
Work around an optimization issue with the MSVC compiler for ARM. check-in: 7d301fdf user: mistachkin tags: trunk
15:19
More lenient handling of ORDER BY optimization in joins with mixed ASC/DESC. This is a better and less restrictive fix for the problem addressed by the previous check-in. check-in: abcf6a5d user: drh tags: trunk
14:11
Only continue an ORDER BY optimization into inner loops if the equality constraints on the inner loop match terms of an outer ordered index that are actually used by the ORDER BY clause. check-in: b0e7b4df user: drh tags: trunk
01:46
Factor an invariant out the loop termination condition for the ORDER BY satisfied-by-index analyzer routine. check-in: 545bb336 user: drh tags: trunk
01:25
Make sure the outer loop cursor numbers are recorded in time for them to be used by the ORDER BY optimizer. check-in: 351dc8d9 user: drh tags: trunk
01:10
Improvements to the wheretrace output. check-in: 76b27765 user: drh tags: trunk
2012-10-01
20:32
Fix harmless compiler warnings. check-in: 59c2be75 user: drh tags: trunk
20:12
Fix several compiler warnings seen with MSVC. Closed-Leaf check-in: 8b5f617c user: mistachkin tags: msvcWarnings
18:44
Add SQLITE_FCNTL_BUSYHANDLER. Invoked to provide access to the busy-handler callback to custom VFS implementations. check-in: 1262d2f4 user: dan tags: trunk
17:44
Minor changes to the query planner for improved test coverage. check-in: c12044df user: drh tags: trunk
12:44
Omit the sqlite3GetReservedNoMutex() routine in build configurations where it is not used. check-in: f193dbb6 user: drh tags: trunk
12:16
Make sure the size parameter to read and write VFS methods in the unix VFS do not become too big or go negative. This was not actually possible in the current code. The checks are added to make sure some future bug does not make it possible. check-in: daebe3bd user: drh tags: trunk
06:50
Ensure that the value returned by xSectorSize() is reasonable (currently defined as between 2^5 and 2^16 bytes) before using it to calculate the amount of padding to add to a wal file. check-in: 6b4ff83b user: dan tags: trunk
2012-09-29
19:10
Improved ORDER BY optimization when outer loops of a join return a single row. check-in: 62225b4a user: drh tags: trunk
15:45
Disable the bigfile tests on Macs. check-in: d869edda user: drh tags: trunk
14:45
Fix compiler warnings found on Lion. check-in: fd74d3d9 user: drh tags: trunk
2012-09-28
20:23
Avoid calling sqlite3BtreeEnter() in a corner case where the corresponding database handle mutex (sqlite3.mutex) may not be held. This prevents a potential deadlock or crash that can occur if the backup API, shared-cache mode and SQLITE_HAVE_CODEC are all in use. check-in: 89b8c377 user: dan tags: trunk
18:13
Modify the clearCell function to use SQLITE_CORRUPT_BKPT in the one place it was not. check-in: 472beb30 user: mistachkin tags: trunk
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
2012-09-27
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
2012-09-26
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
2012-09-25
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
2012-09-24
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
2012-09-21
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
2012-09-20
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
2012-09-19
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
2012-09-18
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
17:08
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
2012-09-17
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
2012-09-15
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
2012-09-13
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
2012-09-12
00:11
Update version number to 3.7.15. Delete some obsolete build scripts. check-in: 9402f81f user: drh tags: trunk
2012-09-11
02:00
Added sqlite3_errstr API to translate a result code to the corresponding error message. check-in: bf8a9ca5 user: mistachkin tags: trunk
2012-09-10
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
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
07:29
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
2012-09-07
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
2012-09-04
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
2012-09-03
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
2012-08-31
14:55
In the spellfix phonehash() function, add letter W into the same character class as V. check-in: 75361013 user: drh tags: trunk
12:31
Changes for ERROR_PATH_NOT_FOUND in addition to ERROR_FILE_NOT_FOUND in winAccess(). check-in: 527340ab user: drh tags: trunk
2012-08-30
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
2012-08-29
10:28
Fix a typo in a comment in vdbe.c. No changes to code. check-in: 9fbe858b user: drh tags: trunk
2012-08-28
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
2012-08-27
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
2012-08-25
10:01
Fix all known instances of 'repeated the' style typos in comments. No changes to code. check-in: 9b19b847 user: mistachkin tags: trunk