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100 most recent check-ins related to "experimental"

2014-10-11
02:12
Make sure that a GROUP BY that also implements an ORDER BY scans the table in the correct order. Fix for ticket [ba7cbfaedc7e6]. check-in: 7a32fdfd user: drh tags: trunk
2014-10-10
20:52
Account for the ASC/DESC properties of ORDER BY expressions when using the same index for GROUP BY and ORDER BY. Candidate fix for [ba7cbfaedc]. Closed-Leaf check-in: 2a957396 user: dan tags: experimental
19:15
Restrict the scope of the explainIndexRange() function in where.c. check-in: c3012452 user: drh tags: trunk
2014-08-29
11:24
Add the sqlite3VdbeChangeDest() routine that can be used to eliminate OP_Move opcodes. Closed-Leaf check-in: 8c57bcc3 user: drh tags: experimental
2014-08-28
19:38
Improved WHERETRACE messages for the estimated output row reductions from range scans. check-in: fdd478bb user: drh tags: trunk
2014-08-22
15:19
Improve the performance and reduce the size of the sqlite3VdbeSerialGet() routine by avoiding the use of stack. check-in: ebc10e46 user: drh tags: trunk
14:56
Handle the 4-byte integer case in the stackless routine. Closed-Leaf check-in: 3f55484e user: drh tags: experimental
14:34
Get the sqlite3VdbeSerialGet() routine to run faster by avoiding the use of local variables. check-in: 8267d821 user: drh tags: experimental
13:22
Change a while-loop into a do-loop in sqlite3VdbeSerialPut() for a small size reduction and performance improvement. check-in: 750bb0a0 user: drh tags: trunk
2014-03-03
21:59
Refactor the sqlite3VdbeRecordCompare() routine used to compare btree records. Create a couple of fast-track routines to handle the common cases of a string with BINARY collation or integer values as the left-most column. This gives a significant performance boost in common use. Oops: This build does not work on the Beaglebone where "char" defaults to unsigned. check-in: aec5473a user: drh tags: broken-on-arm
21:46
Fix a couple of harmless compiler warnings. Closed-Leaf check-in: fcf480cc user: drh tags: experimental
20:48
Avoid a buffer overread in vdbeCompareRecordInt() that might occur if the database is corrupt. check-in: 7c0b4381 user: dan tags: experimental
19:29
Fix a typo in a comment. No changes to code. check-in: 1f4991ab user: drh tags: experimental
18:25
Fix compiler warnings. check-in: ba899372 user: drh tags: experimental
17:48
Merge latest trunk changes. check-in: 1d603564 user: dan tags: experimental
17:36
Change an OP_SCopy into an OP_Copy in a case where the destination might be used after the source has changed. check-in: c0fa0c0e user: drh tags: trunk
15:13
Fix a harmless compiler warning. check-in: d7f6837e user: drh tags: experimental
14:45
Merge latest trunk changes. check-in: e00ed717 user: dan tags: experimental
14:20
Fix a segfault that can occur following an OOM error. check-in: 7fdd378d user: dan tags: trunk
2014-03-01
19:45
Merge trunk changes. check-in: 9c1747b5 user: dan tags: experimental
19:44
Remove the vdbeRecordCompareLargeHeader function. Fix some other details. check-in: 3861e853 user: dan tags: experimental
2014-02-28
20:47
In the command-line shell add the (undocumented and unsupported) ".eqp" command and -eqp command-line option, to cause EXPLAIN QUERY PLAN to be run on each SQL statement as it is evaluated. Intended use is for analysis of the query planner. check-in: e6ecf733 user: drh tags: trunk
18:39
Update some test cases that deal with corrupt databases. check-in: 3a09f560 user: dan tags: experimental
09:48
Minor tweak to vdbeRecordCompareInt(). check-in: 284bde0e user: dan tags: experimental
2014-02-27
20:52
Merge in latest trunk changes. check-in: 8f30b095 user: dan tags: experimental
20:44
Further changes to sqlite3VdbeRecordCompare(). check-in: 57089374 user: dan tags: experimental
15:11
A better way of handling the USE_SYSTEM_SQLITE #define in shell.c. check-in: 51ce713c user: drh tags: trunk
2014-02-25
21:01
Attempt to speed up sqlite3VdbeRecordCompare() by various means. This code is in an interim state. check-in: 85206e0b user: dan tags: experimental
18:12
Also adjust the order of files in the amalgamation to ensure that _FILE_OFFSET_BITS is defined before any #include, for QNX. check-in: 23001a85 user: drh tags: trunk
2013-03-08
18:16
If SQLITE_OMIT_UTF16 is defined, avoid setting the 'enc' field of Schema objects to any value except SQLITE_UTF8. Otherwise, assert() statements may fail or spurious SQLITE_NOMEM errors may be returned at the vdbe level later on. check-in: f2fecfb2 user: dan tags: trunk
07:10
If SQLITE_OMIT_UTF16 is defined, avoid setting the 'enc' field of Schema objects to any value except SQLITE_UTF8. Otherwise, assert() statements may fail or spurious SQLITE_NOMEM errors may be returned at the vdbe level later on. Closed-Leaf check-in: 69746ef7 user: dan tags: experimental
2013-03-07
09:39
Skip tests that require UTF-16 support when compiled with SQLITE_OMIT_UTF16. check-in: e3939142 user: mistachkin tags: trunk
2013-03-05
16:54
Failed merge experimental branch with trunk. check-in: 4e6e07a6 user: dan tags: ex-robust-open
15:27
Do not attempt to set the permissions on an existing journal or wal file. Do this only immediately after creating a new file (or opening one zero bytes in size). Closed-Leaf check-in: 1d808690 user: dan tags: experimental
15:09
Add extended error code SQLITE_READONLY_ROLLBACK. Returned if a read-only connection cannot read the database because doing so would require it to roll back a hot-journal. check-in: 39247b14 user: dan tags: experimental
11:27
Fix a bug in the recent incremental-vacuum related changes. check-in: 717863fc user: dan tags: trunk
2011-12-16
15:38
Merge the fix for [a1fa75cbdd02] from the experimental branch. Also fix the persistent-wal mode feature of truncating the WAL on close so that it always truncates the WAL to zero bytes. check-in: 09ccc4a1 user: drh tags: trunk
13:24
Experimental fix for [a1fa75cbdd]. Closed-Leaf check-in: 6492af76 user: dan tags: experimental
2011-12-15
17:44
Add stdio support to the quota VFS. check-in: 322bd15f user: drh tags: trunk
2011-12-13
12:10
This branch merged with nx-devkit and from there into trunk. Was: In the multiplexor, instead of generating a unique file-name when SQLite opens a temp file, allow the underlying VFS to generate a different temp file for each chunk. Given the changes to the xFileSize method, it is no longer necessary for the different chunks of a temp file to use the same base name. Closed-Leaf check-in: 199f52bc user: dan tags: experimental
11:15
Change the way IO errors are handled in the xFileSize method of the multiplexor VFS. Add test file multiplex3.test. check-in: 255d2149 user: dan tags: experimental
2011-12-12
19:48
Fix os_unix.c so that, unless 8.3 filenames are actually in use, journal and wal file permissions are assigned correctly even if SQLITE_ENABLE_8_3_NAMES is defined. check-in: 169e1229 user: dan tags: trunk
2011-08-29
03:08
Merge performance enhancements into trunk. check-in: 5a00d24b user: drh tags: trunk
02:49
About a 1% overall performance improvement by using a macro to avoid no-op calls to sqlite3MemReleaseExternal(). Closed-Leaf check-in: ff71d20a user: drh tags: experimental
02:16
Small performance improvement to OP_Column. check-in: b6b73a74 user: drh tags: experimental
2011-08-28
02:15
About a 3% improvement in the performance of OP_Column. check-in: edff9d4a user: drh tags: experimental
00:19
Correctly display P4_ADVANCE values on opcode traces. Mark an always-taken branch in OP_Column as such. check-in: 087dc960 user: drh tags: experimental
2011-08-27
18:48
Experimental changes to improve the performance of OP_Next. check-in: 1a249845 user: dan tags: experimental
2011-08-26
20:55
Fix several harmless compiler warnings and a documentation bug. check-in: 5454d0fe user: drh tags: trunk
2011-08-12
16:47
Merge the experimental changes to use a merge-sort when creating an index into the trunk. check-in: 346a453d user: dan tags: trunk
16:34
Update Makefile.in and configure to account for new source file vdbesort.c. Closed-Leaf check-in: 69e4b41d user: dan tags: experimental
16:30
Merge latest trunk changes into experimental branch. check-in: 7e515055 user: dan tags: experimental
16:11
Remove an unused parameter from a function in vdbesort.c. Fix some comments and other details in the same file. check-in: 1a8498d8 user: dan tags: experimental
15:02
Add the SQLITE_OMIT_MERGE_SORT pre-processor directive. To omit the code in vdbesort.c. check-in: 4ced2394 user: dan tags: experimental
11:59
Add tests to improve coverage of vdbesort.c. check-in: 87a15917 user: dan tags: experimental
2011-08-10
01:52
Make the openDirectory routine in os_unix.c overrideable so that it can be turned into a harmless no-op for the chromium sandbox. check-in: 6b236069 user: drh tags: trunk
2011-08-08
19:26
Remove redundant parameter from vdbeSorterInitMerge() in vdbesort.c. check-in: eec8c0df user: dan tags: experimental
16:44
Add fault-injection and other tests (and fixes) to improve coverage of vdbesort.c. check-in: 0e6defa6 user: dan tags: experimental
2011-08-06
15:09
Fix a problem with building large indexes introduced by the previous commit. check-in: 038ec9ea user: dan tags: experimental
12:01
In temp files used for merge sorting, store the size of each packed-memory-array at the start of the array itself. This is to avoid having to store the offsets of all arrays in the (potentially very large) file in main-memory. check-in: 8051c176 user: dan tags: experimental
2011-08-05
11:49
Minor internal changes to vdbesort.c. Also, default to merging lists together 16 at a time. check-in: 9ddc324a user: dan tags: experimental
2011-08-04
18:43
Fix a comment in vdbesort.c. check-in: db8518ca user: dan tags: experimental
12:14
Change to using packed-memory-arrays instead of b-trees when performing an offline merge-sort for CREATE INDEX. This makes it easier to control the number of disc seeks required when merging. check-in: a4770d07 user: dan tags: experimental
2011-08-02
10:56
Minor fixes to vdbesort.c code in preparation for a major rework. check-in: 7f339c0e user: dan tags: experimental
2011-07-12
14:28
Experimental support for speeding up CREATE INDEX commands using an offline merge sort. check-in: 30dbf0fe user: dan tags: experimental
2011-07-11
23:45
Update the TCL commands for setting windows manditory locks. Add test cases for manditory lock delays under windows. check-in: 03af4c17 user: drh tags: trunk
2011-07-02
09:46
Merge experimental changes improving optimization of DISTINCT queries with the trunk. check-in: 45e581bf user: dan tags: trunk
06:44
Fix a broken assert() in where.c. Closed-Leaf check-in: 090b2917 user: dan tags: experimental
2011-07-01
18:43
Merge latest trunk changes with experimental branch. check-in: e56be74e user: dan tags: experimental
18:26
Improve use of indexes to optimize DISTINCT queries. check-in: 6c202ea0 user: dan tags: experimental
14:22
Test case for ticket [d6ddba6706353915ceed] check-in: 953e169e user: drh tags: trunk
14:21
Improvements and tests for detection of redundant DISTINCT qualifiers. check-in: 7337293c user: dan tags: experimental
2011-06-30
20:17
Experimental changes to improve optimization of DISTINCT queries. check-in: f7ba0219 user: dan tags: experimental
2011-06-29
17:11
Pass the BTREE_UNORDERED hint into both sqlite3BtreeOpen() and into sqlite3BtreeCreateTable(). check-in: 591de898 user: drh tags: trunk
2011-04-15
13:29
Add retry logic to GetFileAttributesEx() on windows. Closed-Leaf check-in: 1cca9a49 user: drh tags: experimental
12:36
Make sure the unix backend returns SQLITE_FULL if write() fails with an ENOSPC error code. check-in: 721e3c16 user: drh tags: trunk
2010-12-21
20:36
Merge into the trunk the experimental enhancements to sqlite3_db_status() for measuring lookaside memory allocator performance. check-in: 8c3b06c2 user: drh tags: trunk
2010-12-20
15:51
Add additional DBSTATUS options for measuring the hit and miss rates against the lookaside memory pool - information useful in tuning the lookaside size. Currently experimental pending analysis of performance impact. Closed-Leaf check-in: 34613f1d user: drh tags: experimental
2010-12-17
14:03
Add the "-heap" option to the command-line shell - to allocate a fixed heap for use with SQLITE_ENABLE_MEMSYS5. check-in: 74fff692 user: drh tags: trunk
2010-11-15
14:44
Merge the EXPLAIN QUERY PLAN changes from experimental into trunk. check-in: ce27bf38 user: drh tags: trunk
2010-11-13
16:42
Change the EXPLAIN QUERY PLAN output to use "USING INDEX" instead of "BY INDEX", and to use "SEARCH" instead of "SCAN" for loops that are not full-table scans. Closed-Leaf check-in: 6611b76b user: dan tags: experimental
2010-11-12
17:41
Add EXPLAIN QUERY PLAN test cases to check that the examples in the documentation work. check-in: 85fdad85 user: dan tags: experimental
15:36
Reduce the number of branches that need to be tested in the explainIndexRange() function of where.c. check-in: 6fdae9a6 user: drh tags: experimental
2010-11-11
17:48
Use "COMPOUND" instead of "COMPOSITE" in the EXPLAIN QUERY PLAN output to describe UNION, UNION ALL, EXCEPT and INTERSECT operations. check-in: 28643b85 user: dan tags: experimental
16:46
Add a row of EXPLAIN QUERY PLAN output for each composite select operation (UNION, EXCEPT etc.) in the query. check-in: 00fb8468 user: dan tags: experimental
11:43
Fix a bug in the EXPLAIN QUERY PLAN code. check-in: 7ae06895 user: dan tags: experimental
10:36
Modifications to test cases to account for new EXPLAIN QUERY PLAN output. check-in: 30904ef8 user: dan tags: experimental
2010-11-09
17:49
Merge with latest trunk changes. check-in: 4b5c93bc user: dan tags: experimental
17:35
Add missing comments and fix other issues with routines used by new EQP features. check-in: 925f35c5 user: dan tags: experimental
14:49
Further enhancements and fixes for explain query plan. check-in: 73c93f5a user: dan tags: experimental
2010-11-08
19:16
Changes to the multiplex VFS to optionally (compiler define) allow the "chunk extension" to overwrite the right-most chars of the filename instead of simply being appended. check-in: 07da0a0b user: shaneh tags: trunk
19:01
Experimental changes to EXPLAIN QUERY PLAN. check-in: f4747eb8 user: dan tags: experimental
2010-11-05
20:50
Fix to xTruncate and more journal mode tests for the multiplex VFS. check-in: 65fa1164 user: shaneh tags: trunk
00:01
Merge the multiplexer VFS demo into the trunk. check-in: 1635d927 user: drh tags: trunk
00:00
Fix the Makefile.in so that it works with the multiplexer VFS. Closed-Leaf check-in: 54e2efb6 user: drh tags: experimental
2010-11-04
21:14
Back out an unintended change to permutations.test. check-in: 57fe3535 user: drh tags: experimental
21:13
Another change for testing on Windows. check-in: 2625886b user: shaneh tags: experimental
21:03
Fix the main.mk makefile to include test_multiplex.c for testfixture. check-in: c27c5118 user: drh tags: experimental
20:50
First attempt at a sharding VFS to split large DBs. check-in: dd4dc8a4 user: shaneh tags: experimental
20:47
Fix icon size so it's really 32x32. check-in: 62c494f6 user: shaneh tags: experimental