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100 ancestors of [d67b0ed1]

2015-06-25
16:01
Reorder the terms of a conditional for a small performance gain. check-in: d67b0ed1 user: drh tags: trunk
15:21
Remove a NEVER() that is in fact reachable. check-in: f824e66b user: drh tags: trunk
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
2015-06-24
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
2015-06-23
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
18:24
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
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
2015-06-22
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
2015-06-20
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
2015-06-19
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
2015-06-18
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
2015-06-17
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
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
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
2015-06-16
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
2015-06-15
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
2015-06-13
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
2015-06-12
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
2015-06-11
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
2015-06-10
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
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
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
2015-06-09
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
2015-06-08
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
2015-06-06
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
18:30
Code simplifications in select.c and where.c. check-in: 4f20ac90 user: drh tags: view-optimization
00:18
Minor cleanup of the sqlite3Select() procedure. check-in: f4c90d06 user: drh tags: view-optimization
2015-06-05
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
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
2015-06-04
12:08
Change the name of SrcList.a[].zIndex to the more descriptive SrcList.a[0].zIndexedBy. check-in: 6a9cf063 user: drh tags: trunk
2015-06-02
19:36
Always check for cell overflow before returning a slot from the pageFindSlot routine in btree.c. check-in: 9f035c45 user: drh tags: trunk
18:09
For FROM-clause subqueries that cannot be flattened, try to push relevant WHERE clause terms of the outer query down into the subquery in order to help the subquery run faster and/or use less memory. check-in: 6df18e94 user: drh tags: trunk
17:25
Add test cases for type affinity rules. check-in: 9678646d user: drh tags: trunk
16:19
Rename SQLITE_AFF_NONE to SQLITE_AFF_BLOB to avoid confusion with "no affinity". check-in: 29ad9e91 user: drh tags: trunk
15:32
Rename SQLITE_AFF_NONE to SQLITE_AFF_BLOB. Closed-Leaf check-in: bce3f041 user: drh tags: blob-affinity-rename
14:02
Fix a faulty assert() in btree.c. Update the database fuzz test file with new test cases. check-in: 4e621af1 user: drh tags: trunk
2015-06-01
20:28
For FROM-clause subqueries that cannot be flattened, try to push WHERE clause terms of the outer query down into the subquery in order to help the subquery run faster and/or use less memory. Closed-Leaf check-in: 297fae75 user: drh tags: subquery-opt
18:13
Corrections to comments in expr.c. No code changes. check-in: f925389e user: drh tags: trunk
11:10
Typo fixes and additional background information in README.md. check-in: 9b8e5823 user: drh tags: trunk
2015-05-30
22:57
Updates to configure.ac to help it find where the TCL libraries hidden on Ubuntu 14.04. check-in: c864ff91 user: drh tags: trunk
22:05
Fix minor typo in comment. No changes to code. check-in: 73fc058b user: mistachkin tags: trunk
2015-05-29
18:42
Ensure that allocateBtreePage() always clears the MemPage pointer when it fails due to an I/O or memory allocation error. check-in: 09a38bf6 user: drh tags: trunk
17:51
Move two unreachable conditionals inside of NEVER() or assert(). check-in: db4e9728 user: drh tags: trunk
17:13
Remove a corruption test in balance_nonroot that is superceded by a prior better check. check-in: 00693682 user: drh tags: trunk
15:15
Omit the rowallock.test script (Read-Only WAL lock) from the inmemory_journal permutation. check-in: d21db330 user: drh tags: trunk
14:47
Add support for automatic indexes on FROM-clause subqueries that are implemented via co-routine. check-in: 020b8b10 user: drh tags: trunk
14:36
Add some extra source-code comments and a test case. Closed-Leaf check-in: 6d410442 user: drh tags: coroutine-autoindex