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100 descendants and 100 ancestors of a00d2ed49c9f53263cd76ad41dad9e35e646ebb5

2013-11-21
04:18
Another improvement to OP_Function and an improvement to OP_Move. (check-in: 70b056fb user: drh tags: trunk)
03:43
A simple change to the OP_Function opcode improves overall performance by about 0.5%. (check-in: b890eefd user: drh tags: trunk)
03:12
Performance optimization to the OP_Next and OP_Prev opcodes. (check-in: ecaac28a user: drh tags: trunk)
01:33
Refactor the OP_Column opcode to make it clearer and easier to maintain. Overall, performance tests show about a 1% speed increase with this change. (check-in: 972881c6 user: drh tags: trunk)
01:04
Reduce the size of VdbeCursor again, this time without a performance hit. (Closed-Leaf check-in: 93393993 user: drh tags: OP_Column-refactor)
00:10
Unpack some fields, adding some space back to the VdbeCursor object, in order to help the code to run a little faster. (check-in: f8d5efcd user: drh tags: OP_Column-refactor)
2013-11-20
21:51
Reduce the size of the VdbeCursor object from 144 to 120 bytes. (check-in: 5f9d5068 user: drh tags: OP_Column-refactor)
20:58
Improved comments on the OP_Column changes. Optimize out loading of overflow pages for content with zero length. Add test cases for the latter. (check-in: 0e05679d user: drh tags: OP_Column-refactor)
19:28
Further performance tweaks to OP_Column. (check-in: 0e3f5df6 user: drh tags: OP_Column-refactor)
17:25
Refactoring the OP_Column opcode for improved performance and maintainability. (check-in: 7c914e39 user: drh tags: OP_Column-refactor)
02:53
Simplifications to the VdbeCursor object. (check-in: 5562cd34 user: drh tags: trunk)
00:59
Performance improvement for the OP_MustBeInt opcode in the VDBE. (check-in: 96a65388 user: drh tags: trunk)
2013-11-19
18:17
Fix a harmless MSVC compiler warning. (check-in: 6cc023bb user: drh tags: trunk)
13:55
Minor performance improvement to sqlite3SerialTypeGet(). (check-in: 17e8524f user: drh tags: trunk)
12:33
Change Noop-comments in where.c into Module-comments, so that they are omitting without SQLITE_ENABLE_MODULE_COMMENTS. (check-in: 3e577f40 user: drh tags: trunk)
02:34
Avoid seeking on the main data table during the first loop of an UPDATE if an index is sufficient to check the WHERE clause. (check-in: 57158d9d user: drh tags: trunk)
00:31
Fix an requirement mark in a test script so that it matches the typo-corrected requirement. No changes to code. (check-in: 072412d5 user: drh tags: trunk)
2013-11-18
19:32
Add comments identifing where the skip-scan option is decided in the query planner, to aid in tuning that decision. No changes to code. (check-in: e9df04ce user: drh tags: trunk)
18:48
Fix documentation typos. No changes to code. (check-in: 7caeb09c user: drh tags: trunk)
11:20
Fix harmless compiler warnings from clang scan-build. (check-in: 8d002740 user: drh tags: trunk)
08:41
Fix a problem with the shell tool EXPLAIN indentation code and VDBE sub-programs. (check-in: 9c8d6856 user: dan tags: trunk)
03:11
Enable the ONEPASS optimization for DELETE, for both rowid and WITHOUT ROWID tables. (check-in: 44a07afd user: drh tags: trunk)
2013-11-17
02:42
Make sure one-pass DELETE for WITHOUT ROWID tables correctly positions the PRIMARY KEY cursor. Make the same fix for UPDATE. (Closed-Leaf check-in: 6bd5750b user: drh tags: optimize-delete)
2013-11-16
23:16
Fix a couple of minor problems with the new delete logic. (check-in: a11243f8 user: drh tags: optimize-delete)
23:03
Fix an OOM-recovery problem in the DELETE code generator. (check-in: dc7be158 user: drh tags: optimize-delete)
22:48
Combine the rowid and WITHOUT ROWID paths for DELETE into a single path. (check-in: c4734b88 user: drh tags: optimize-delete)
20:45
The one-pass optimization is now working for DELETE on WITHOUT ROWID tables. (check-in: e4d220a3 user: drh tags: optimize-delete)
20:13
Enhance the DELETE logic so that it can make use of WHERE_ONEPASS_DESIRED for rowid tables. (check-in: 8f479a72 user: drh tags: optimize-delete)
15:35
Fully constraint the ORDER BY on the top-10 line of the --summary output from the wordcount test program. Add the run-wordcount.bash script for running wordcount in various configurations. (check-in: 7edf39eb user: drh tags: trunk)
14:03
Avoid unnecessary OP_IfNull checks when doing a range query where there is a constraint on the lower bound of the range. (check-in: de08a7e7 user: drh tags: trunk)
13:55
Simplification and performance improvement to the logic that factors constant expressions ouf of inner loops. (check-in: ee9353fd user: drh tags: trunk)
12:56
Fix testcase misc7-16 so that it works with the new UNIQUE constraint error message format. (check-in: c7f2ed9f user: drh tags: trunk)
2013-11-15
20:06
Add ALWAYS and NEVER macros to currently unreachable but important branches in sqlite3ExprCompare(). (Closed-Leaf check-in: cee835fe user: drh tags: expr-codegen-enhancement)
19:00
Merge the operator comment fixes from trunk. (check-in: 9f14f55c user: drh tags: expr-codegen-enhancement)
18:58
Fix comments on the OP_Divide and OP_Remainder operators, especially the "Synopsis:" comment, so that they agree with the actual implementation. (check-in: cc17f1f0 user: drh tags: trunk)
18:15
Changes to make the new constant expression factoring logic more general and more testable. (check-in: d10fb49a user: drh tags: expr-codegen-enhancement)
16:48
Add test cases for INSERT INTO ... DEFAULT VALUES on tables with numeric constants in CHECK constraints. (check-in: 79ec485b user: drh tags: expr-codegen-enhancement)
15:52
Improvements to the Expr comparison routine to make it more general. Improvements to unary-minus code generation so that it can make use of a global constant register with a zero value. (check-in: 835be656 user: drh tags: expr-codegen-enhancement)
13:12
Add the --query option to the wordcount test program. (check-in: 5960d11e user: drh tags: trunk)
12:41
Simplify the range scan code generate while also avoiding an unnecessary OP_Affinity opcode. (check-in: 372686bf user: drh tags: expr-codegen-enhancement)
03:30
Merge EXPLAIN fixes from trunk. (check-in: cd579727 user: drh tags: expr-codegen-enhancement)
03:21
Fix a typo in the "synopsis" for the OP_Lt opcode that causes an incorrect comment to be added to EXPLAIN output. (check-in: d99a30a2 user: drh tags: trunk)
03:16
Another adjustment to the EXPLAIN indentation logic, in order to deal with the sorter loop on a CREATE INDEX statement. (check-in: cbe85cc2 user: drh tags: trunk)
01:10
Rework the logic that factors constant expressions out of inner loops, making it both simpler and faster. (check-in: 8dc5c76c user: drh tags: expr-codegen-enhancement)
2013-11-14
23:59
Adjust the command-line shell EXPLAIN indentation logic to handle the second loop of an UPDATE that reads out a RowSet. (check-in: ea141a9b user: drh tags: trunk)
19:34
Remove an unused local variable. (check-in: 10d59226 user: drh tags: trunk)
19:18
Merge the skip-scan optimization into the sessions branch. (check-in: 7596d1bf user: drh tags: sessions)
15:35
An experimental virtual tables for showing the content of internal schema objects. (Leaf check-in: d1fbc6ca user: drh tags: schema2-vtab)
00:09
Simplification to the progress callback check. One branch removed. (check-in: 24ef1654 user: drh tags: trunk)
2013-11-13
23:48
Make sure the progress callback is invoked prior to an SQLITE_ROW return if it is overdue to be called. (check-in: 21f59b04 user: drh tags: trunk)
20:46
Merge the skip-scan enhancement into trunk. (check-in: b0bb975c user: drh tags: trunk)
19:01
Import the "PRAGMA vdbe_eqp" enhancement and the enhanced EXPLAIN formatting the shell from trunk. Fix a bug in skip-scan and add a test case to prevent a regression. (Closed-Leaf check-in: f668616a user: drh tags: skip-scan)
18:35
In the shell tool, if an "EXPLAIN" command is executed in ".explain on" mode, attempt to automatically indent the bodies of loops in the output VDBE program. (check-in: e7d34ec6 user: dan tags: trunk)
17:58
Add the "PRAGMA vdbe_eqp" command, only available with SQLITE_DEBUG. Simplify some of the other debugging logic. (check-in: 8ce33f4c user: drh tags: trunk)
17:24
Add VDBE comments to the beginning and end of skip-scan loops. (check-in: 0c85d93b user: drh tags: skip-scan)
16:58
Improve the way that skip-scan loops are constructued. Add test cases. Improved the scoring of skip-scan loops. (check-in: 5e75ab93 user: drh tags: skip-scan)
15:32
Add test cases for skip-scan. Enhance "do_test" so that if the expected result is of the form "/*..*/" or "~/*..*/" it treats the expected result as a glob pattern rather than as a regular expression. Fix a bug in ANALYZE result loading associated with WITHOUT ROWID tables. (check-in: d3e6e9b2 user: drh tags: skip-scan)
12:27
Add the ability to use an index even if the left-most columns of the index are unconstrainted, provided that the left-most columns have few distinct values. (check-in: 27dd5993 user: drh tags: skip-scan)
08:55
Avoid an unnecessary OP_IfNull while doing an indexed search. (check-in: 51960009 user: drh tags: trunk)
2013-11-12
21:37
Adjust the SQLITE_MALLOCSIZE defines, primarily to make sure _msize gets used with MSVC when appropriate. (check-in: 4e7e805e user: mistachkin tags: trunk)
21:10
Fix harmless compiler warning. (check-in: ddacd101 user: mistachkin tags: trunk)
20:18
Minor enhancements to the auxiliary information added to EXPLAIN output with SQLITE_EXPLAIN_ENABLE_COMMENTS. (check-in: 0d1328e3 user: drh tags: trunk)
18:37
Break out the structure and macro definitions of where.c into a separate header file whereInt.h for easier editing and debugging. (check-in: c4446712 user: drh tags: trunk)
17:46
When possible, have FTS use 32-bit operations to read varints from the database. (check-in: aa7ba302 user: dan tags: trunk)
15:39
Import recent bug fixes from trunk. (check-in: 20eeee4c user: drh tags: sessions)
15:33
A better (simpler) fix to the count(*) problem addressed in the previous check-in. (check-in: 0f924c6e user: drh tags: trunk)
14:55
Make sure the count(*) optimization works correctly on WITHOUT ROWID tables. (check-in: 91174779 user: drh tags: trunk)
12:30
Update test command [explain_i] to handle the opcodes used by virtual tables (VNext, VFilter etc.). (check-in: 1b215ee3 user: dan tags: trunk)
12:17
Fix for [4065ac8595]: Do not order CROSS or LEFT joins, even if the right-hand-side is a virtual table. (check-in: e2684ece user: dan tags: trunk)
01:11
Fix an error message in the spellfix extension so that it conforms to the style of error messages in the core. (check-in: b896ae3d user: drh tags: trunk)
2013-11-11
23:26
Add a comment to the sqlite3_index_info structure indicating that the new field is only available in SQLite 3.8.2 or later. (check-in: 239648f8 user: drh tags: trunk)
23:02
Fix two test cases (due to changes in the formatting of constraint errors) so that all tests now pass. (check-in: 129e2b69 user: drh tags: sessions)
22:55
Merge in the WITHOUT ROWID changes. A few tests are failing now. They will be fixed in a follow-on check-in. (check-in: 5addd123 user: drh tags: sessions)
19:56
Fix typos in compile and run-time tests of the sqlite library version number in rtree.c. (check-in: f58d5701 user: dan tags: trunk)
19:01
Add a way for virtual tables to return the expected number of rows for a scan (not just the overall cost) to SQLite. Have the rtree module make use of this. (check-in: 5a3cfd74 user: dan tags: trunk)
16:55
Remove unreachable code, replacing it in most cases with assert() or NEVER() macros. (check-in: 924d63b2 user: drh tags: trunk)
03:37
Fix issue with several memory allocation tests due to KeyInfo allocations now being shared. (check-in: 569fedd6 user: mistachkin tags: trunk)
03:24
Convert several ALWAYS() macros in vdbe.c into assert() statements. (check-in: acc40ff6 user: drh tags: trunk)
02:46
Fix several harmless compiler warnings. (check-in: e6ff492f user: mistachkin tags: trunk)
01:42
Modify a HeapValidate assert in the Win32 native allocator. (check-in: aaed7d1d user: mistachkin tags: trunk)
00:43
Fix a problem in OP_IdxDelete as used by REPLACE conflict resolution that comes up due to recent enhancements that reduce the work required for UNIQUE NOT NULL indices. (check-in: 61d7d475 user: drh tags: trunk)
2013-11-10
00:03
Fix typo in comment and remove superfluous blank line. No changes to code. (check-in: 023233f1 user: mistachkin tags: trunk)
2013-11-09
23:55
Fix compilation errors with some compilers that do not reference recent Windows SDK header files. (check-in: a5805976 user: mistachkin tags: trunk)
23:44
Fix memory type mismatch when compiled with MEMDEBUG. (check-in: 2c32bd6d user: mistachkin tags: trunk)
22:08
Add the sqlite3_win32_compact_heap() function for cleaning up memory allocations on Win32 system. Also cleanup the winGetTempname() function. Changes to the Win32 VFS only. (check-in: d06d9fdb user: drh tags: trunk)
21:19
Updates to documentation on sqlite3_last_insert_rowid(). No changes to code. (check-in: a4c5804e user: drh tags: trunk)
21:11
Use the UNICODE_STRING_MAX_CHARS constant from WinNT.h. (Closed-Leaf check-in: 3fefe4dd user: mistachkin tags: win32heap)
21:10
Furhter cleanup of the winGetTempname function. (check-in: 674de36b user: mistachkin tags: win32heap)
19:47
Updates to requirements marks. No changes to code. (check-in: 8a036628 user: drh tags: trunk)
18:15
Throw an error if AUTOINCREMENT appears in a WITHOUT ROWID table. Updates to API documentation to discuss WITHOUT ROWID. (check-in: b1abb2b0 user: drh tags: trunk)
2013-11-08
20:10
Add more assert() statements and fix compilation issues when the Win32 native heap is not enabled. (check-in: fbf8c382 user: mistachkin tags: win32heap)
19:51
Disable use of HeapCompact on Windows CE as it is not available on all versions. (check-in: e9694b87 user: mistachkin tags: win32heap)
18:52
Adjust the winMemInit return code handling used when resetting the Win32 native heap. (check-in: 37853665 user: mistachkin tags: win32heap)
18:37
Minor corrections to logging for sqlite3_win32_compact_heap(). (check-in: 71347d02 user: mistachkin tags: win32heap)
18:13
Enhancements to the Win32 native heap integration. (check-in: c54dc967 user: mistachkin tags: win32heap)
17:13
Fix harmless compiler warnings. (check-in: 0077c077 user: drh tags: trunk)
17:03
Merge the Cygwin directory separator fix. Also fix a C++-ism in the multiplexor code so that it will compile on MSVC. (check-in: 830629d3 user: drh tags: trunk)
16:54
Performance improvement: Avoid unnecessary seeks on REPLACE INTO for a WITHOUT ROWID table. (check-in: fd11afa5 user: drh tags: trunk)
15:19
Performance improvements: Avoid unnecessary seeks when doing a single-row UPDATE on a WITHOUT ROWID table. (check-in: 6f187a0f user: drh tags: trunk)
12:14
Merge change to drop the mutex on the multiplexor before entering the xRead VFS call, in order to enhance parallelizability. (check-in: 3c566e41 user: drh tags: trunk)
2013-10-21
13:15
Drop the mutex on the multiplexor before entering the xRead VFS call. (Closed-Leaf check-in: a00d2ed4 user: drh tags: multiplex-parallel-read)
2013-10-19
16:51
Improved header comment with better instructions on the vfslog.c extension. (check-in: 4bd592c8 user: drh tags: trunk)
15:07
Fix a bug causing an "malformed database schema error" error if a temp table with the same name as an existing table that has at least one temp trigger attached to it is created. (check-in: 56dca4a6 user: dan tags: trunk)
2013-10-18
20:03
Add the SQLITE_FCNTL_TRACE file control and generate it for OP_Trace when compiled with SQLITE_USE_FCNTL_TRACE. Update vfslog.c to make use of the new file control. Also update vfslog.c to log UNLOCK events before the fact, rather than afterwards. (check-in: e801f35a user: drh tags: trunk)
17:42
Further enhance the vfslog extension to record the number of freelist pages and the first freelist page in CHNGCTR-READ and CHNGCTR-WRITE records. (check-in: 08157524 user: drh tags: trunk)
14:37
In the vfslog extension for FILECONTROL records, show the pragma name for SQLITE_FCNTL_PRAGMAs and the requested size for SQLITE_FCNTL_SIZE_HINT. (check-in: f0629695 user: drh tags: trunk)
2013-10-17
12:57
Version 3.8.1 (check-in: c78be6d7 user: drh tags: trunk, release, version-3.8.1)
2013-10-16
23:58
Fix a typo in a requirements mark comment. No changes to code. (check-in: e5a439cf user: drh tags: trunk)
11:39
Clear a valgrind error by zeroing the first 4 bytes of the temp-space allocation used by the b-tree module. (check-in: 8651aba1 user: dan tags: trunk)
11:31
Fix memory and resource leaks for WinCE and Cygwin, and a compiler warning on windows with SQLITE_THREADSAFE=0. (check-in: 9905cea9 user: drh tags: trunk)
09:49
Fix memory/resource leaks for WinCE and Cygwin. (Closed-Leaf check-in: 2470d1bb user: mistachkin tags: wince-fixes)
2013-10-15
19:06
Add the "languageid" hidden column to fts4aux. (check-in: 891df358 user: dan tags: trunk)
15:35
Changes to test code to make sure no server threads are left running after server1.test finishes. (check-in: 1086e00b user: dan tags: trunk)
14:29
Fix an 8-byte alignment problem on the "crash test" harness (test code, not in the core) that causes problems on Sparc. (check-in: bcbc6503 user: drh tags: trunk)
11:58
Fix harmless macro redefinition warnings in the totype extension. (check-in: c9c1f8d6 user: drh tags: trunk)
10:43
Fix harmless macro redefinition warnings in the totype extension. (Closed-Leaf check-in: a38adeb7 user: mistachkin tags: noWarnings)
2013-10-14
22:35
Fix harmless compiler warning in the totype extension. Include all standard whitespace characters in totypeIsspace. Minor adjustments to style and comments. (check-in: 73238f65 user: mistachkin tags: trunk)
21:14
Move the tointeger() and toreal() functions out of core and make them into a run-time loadable extension. (check-in: 9f66dd7e user: drh tags: trunk)
20:30
Fix a crash in FTS incremental phrase processing that can occur if the second or subsequent token is much more common in the dataset than the first. (check-in: 0bf438fc user: dan tags: trunk)
19:35
Add implementations for the toInteger() and toReal() SQL functions. (check-in: a0f7cbc0 user: drh tags: trunk)
15:41
Fix for building with SQLITE_OMIT_FOREIGN_KEY. (check-in: b8b5f6c8 user: dan tags: trunk)
14:30
Update the foreign_key_check pragma so that when a parent table is undefined it is treated as an empty table. (check-in: 208b259a user: drh tags: trunk)
14:21
Corrects to comments on the STAT4 implementation. (check-in: e06f74d3 user: drh tags: trunk)
13:21
Make subroutines sampleCopy() and valueFromExpr() have file scope. (check-in: 1660efbe user: drh tags: trunk)
10:46
Add a new application_id for GeoPackage version 1.0. (check-in: 98ddfe45 user: drh tags: trunk)
2013-10-12
23:39
Merge updates from trunk. (Closed-Leaf check-in: a88b5be0 user: mistachkin tags: toTypeFuncs)
20:22
Restore the index_list pragma back to its former operation. Create a new PRAGMA stats used to access the table and index widths and heights. (check-in: f0cf8c85 user: drh tags: trunk)
19:06
In "PRAGMA foreign_key_check", treat missing parent tables as empty (instead of as errors). (Closed-Leaf check-in: 8c13a7fd user: dan tags: fkc-missing-parent-tables)
15:12
Fix handling of "DROP TABLE" commands when "PRAGMA defer_foreign_keys=1" is set. (check-in: 27001356 user: dan tags: trunk)
13:16
Add tests that demonstrate that PRAGMA defer_foreign_keys will reset to off at the conclusion of the next transaction. (check-in: 67e28a11 user: drh tags: trunk)
02:33
Fix harmless compiler warning. (check-in: 4b130f88 user: mistachkin tags: trunk)
02:31
Permit the creation of VSIX packages for Win32. (check-in: 035d03e9 user: mistachkin tags: trunk)
00:56
Fix Unicode character encoding issues on Windows in the fts4unicode test file. (check-in: c9310c9a user: mistachkin tags: trunk)
2013-10-11
23:37
Identify requirements text in the SQLITE_CONFIG_ documentation. Fix a typo (a duplicated word) in part of that documentation. Add some requirements marks for DETACH to the test scripts. No code changes. (check-in: 1be0a3ad user: drh tags: trunk)
23:02
The split amalgamation option should be disabled by default. (check-in: 7c24d22f user: mistachkin tags: trunk)
23:01
Enhance debugging support for the split amalgamation files when compiling with MSVC. (check-in: 8ff17c55 user: mistachkin tags: trunk)
23:01
Fix a harmless compiler warning in lemon.c. (check-in: 62959c0c user: drh tags: trunk)
22:19
Add -no-undefined option when linking the shared libraries. (check-in: 977d2b12 user: mistachkin tags: trunk)
22:17
Fix test numbering. (check-in: cef39f69 user: mistachkin tags: trunk)
20:14
Add requirements marks. No code changes. (check-in: 5e0d43ab user: drh tags: trunk)
16:35
Additional test cases and requirements marks for the unlikely(), likelihood() and instr() functions. (check-in: 5f01cd36 user: drh tags: trunk)
15:05
Fix various harmless compiler warnings. Change the "warnings.sh" script to work with STAT4 instead of STAT3. (check-in: 7df06684 user: drh tags: trunk)
13:27
Make sure the sqlite3.h file occurs at the very top of the sqlite3.c amalgamation. (check-in: 03593817 user: drh tags: trunk)
05:51
Fix compilation issue for WinRT. (check-in: 7a2006ca user: mistachkin tags: trunk)
2013-10-10
17:33
Add a rule to the main.mk makefile for building showdb. (check-in: fc5552da user: drh tags: trunk)
15:04
Enhancements to the vfslog.c module to show all change-counter changes and to show the hostname and pid of the process that creates each log file. (check-in: af7abebe user: drh tags: trunk)
13:41
Another fix to the hash signature algorithm in vfslog.c. (check-in: 34212aa8 user: drh tags: trunk)
13:38
Fix the hash signature algorithm in vfslog.c. Add a utility program to show the hash signatures for every page of a database file. (check-in: eaf4de13 user: drh tags: trunk)
13:04
Add ext/misc/vfslog.c, a VFS shim for unix that keeps a log of method calls made by SQLite. (check-in: 24a827b8 user: dan tags: trunk)
12:38
Estimate row sizes for tables and indices and use those estimates during query planning. Enhance the index_info pragma to show the estimated row sizes and to show the estimated row size for the main table as well. Allow an alternative row size estimate to be specified in the sqlite_stat1 table. (check-in: d27b88b8 user: drh tags: trunk)
2013-10-09
19:07
Make sure the correct printf format is used for type tRowcnt regardless of whether 32-bit or 64-bit row counts are specified at compile-time. (Closed-Leaf check-in: e97d7d30 user: drh tags: row-size-est)
2013-10-08
23:16
Move a conditional inside of an #ifdef in order to make all branches reachable regardless of compile-time options used. (check-in: f7cc30d4 user: drh tags: row-size-est)
22:25
Fix test cases for the new information in PRAGMA index_list. (check-in: dd03be10 user: drh tags: row-size-est)
20:42
Rollback some of the previous changes in the branch such that the estimated row sizes are now only used as a tie-breaker for index scans. (check-in: 65553ff3 user: drh tags: row-size-est)
20:01
Use #ifdefs to omit unused code in the columnType() routine depending on compile-time options. (check-in: 3fd5e332 user: drh tags: row-size-est)
18:40
Further refinement of the idea of multiplying run-time cost estimates by the estimated row size. (check-in: 18bd6ba9 user: drh tags: row-size-est)
2013-10-07
21:49
Fix compilation issue with MSVC. (check-in: 36d64dc3 user: mistachkin tags: trunk)
17:32
Multiply all cursor step cost estimates by the estimated size of the row in bytes, in order to get the query planner ot make use of estimated row sizes. This check-in uses magic numbers in a few places (for example, estimates of the size of output rows) and needs lots of refinement. Consider this a proof-of-concept only. (check-in: cb34cfe5 user: drh tags: row-size-est)
10:48
Merge bug fixes from trunk. (check-in: 1d7b2dc0 user: drh tags: row-size-est)
00:36
Restore the hexrekey pragma which was accidently deleted during the pragma refactoring. Make sure the hexkey and hexrekey pragmas do not overflow buffers with a over-length key. (check-in: 0aca31e1 user: drh tags: trunk)
2013-10-06
22:52
Remove an incorrect debugging assert() that was accidently added during the STAT4 enhancement. (check-in: 2bb7f74b user: drh tags: trunk)
22:12
Accept the sz=N parameter on table-only lines of sqlite_stat1. (check-in: e9e932aa user: drh tags: row-size-est)
2013-10-05
20:18
Fix an issue in the test8.c test module that arises because of the change to PRAGMA index_list(). Remove an unused local variable. (check-in: 029430c5 user: drh tags: row-size-est)
19:18
Completely remove the iScanRatio field. The PRAGMA index_list(TABLE) command shows the estimated row size in the forth column. It also generates a row for the table with an index name of NULL. The query planner still does not take row size estimates into account - that is the next step. (check-in: 8b4aa0c7 user: drh tags: row-size-est)
18:32
Improvements to the LogEst command-line tool used to convert between ordinary numbers and the LogEst representation. (check-in: 5252aeb6 user: drh tags: row-size-est)
18:16
Begin an experimental refactoring to estimate the average number of bytes in table and index rows and to use that information in query planner. Begin by renaming WhereCost to LogEst and making that type and its conversion routines available outside of where.c. (check-in: 66c4a251 user: drh tags: row-size-est)
02:56
In the index_list pragma, make sure the "r" column is the same on output as it was on input in the sqlite_stat1 table. (Closed-Leaf check-in: de78250a user: drh tags: index-scan-rate)
2013-10-04
20:39
Merge trunk changes. (check-in: c6ac80ed user: drh tags: index-scan-rate)
18:29
Further refinements of the index scanning speed logic. (check-in: e5d9371d user: drh tags: index-scan-rate)
18:17
If an "INSERT INTO ... SELECT" can use the xfer optimization, pass the OPFLAG_BULKCSR hint to btree cursors used to update indices. This results in a tighter key packing. (check-in: 087af29e user: dan tags: trunk)
15:58
Fix test cases so that they work when the query planner uses index size estimates to determine whether or not to try an covering index scan. (check-in: 2f394de8 user: drh tags: index-scan-rate)
15:30
Improved estimates of the relative speed of index scans based on declared datatypes of columns in the table. Add "r" column to PRAGMA index_info, showing the estimated relative scan rate. (check-in: 07462bb6 user: drh tags: index-scan-rate)
02:36
Progress toward using the iScanRatio information on indices. Many tests are still failing. (check-in: 6c352edb user: drh tags: index-scan-rate)
00:00
Make sure the count(*) optimization works correctly even when partial indices are present. Ticket [a5c8ed66cae]. (check-in: 9f2f4c0a user: drh tags: trunk)
2013-10-03
20:41
Have FTS take advantage of "docid<?" constraints when they are present. Extend the FTS "incremental doclist" optimization so that it is used for tokens within multi-token phrases. (check-in: baf8ce59 user: dan tags: trunk)
20:28
Merge latest trunk changes. (Closed-Leaf check-in: 24aa20da user: dan tags: fts4-docid-range-constraints)
19:27
Allow FTS4 multi-token phrases to use a combination of in-memory and incrementally loaded doclists. This allows phrases to (partially) benefit from incremental doclists without disabling the deferred token optimization. (check-in: f6819c5f user: dan tags: fts4-docid-range-constraints)
19:21
Experimental branch allowing different postulated scan rates for each index. (check-in: d59d97b0 user: drh tags: index-scan-rate)
15:39
The sqlite3FixInit() routine cannot fail. So change the return type from "int" to "void". (check-in: 500c5932 user: drh tags: trunk)
14:08
Rework the PRAGMA implementation to only call sqlite3ReadSchema() from a single place, based on a flag in the pragma table, rather than separately from each case which needs the schema. (check-in: 8338232a user: drh tags: trunk)
12:29
Return an error if an attempt is made to create a trigger with an SQL variable embedded within it. If such a variable reference is found within a trigger definition loaded from the sqlite_master table, silently replace it with a NULL. (check-in: f35f6ae3 user: dan tags: trunk)
11:27
Remove unnecessary memset() calls from test code. (check-in: eec3187b user: drh tags: trunk)
2013-10-02
20:46
In the lemon parser generator, change all hashes to unsigned to avoid potential problems with signed integer overflow. (check-in: 8d399a03 user: drh tags: trunk)
08:04
Add a test to check that the new multi-token phrase optimization is actually helping. (check-in: bc3a2ed5 user: dan tags: fts4-docid-range-constraints)
2013-10-01
20:29
Bring some file format comments in btreeInt.h up to date. (check-in: 012d54d0 user: drh tags: trunk)
20:10
Merge trunk changes with this branch. (check-in: 65d9c6fa user: dan tags: fts4-docid-range-constraints)
20:02
Allow multi-token phrases to load doclists from the database incrementally. This allows queries that feature such phrases to benefit from the "docid<?" optimization. (check-in: ea543f08 user: dan tags: fts4-docid-range-constraints)
19:36
Fix comments in the fast_vacuum.c demonstration program. (check-in: e0db7b38 user: drh tags: trunk)
19:02
Add the "fast_vacuum.c" demonstration program to the tool/ subdirectgory. (check-in: 2b60320d user: drh tags: trunk)
15:30
Change the ".dump" command in the command-line shell so that it COMMITs if there are database corruption errors but invokes ROLLBACK on any other kind of error. (check-in: 47323463 user: drh tags: trunk)
2013-09-30
19:33
Fix a minor typo in a comment in where.c. (check-in: 9c9fa151 user: drh tags: trunk)
19:05
Add some timing tests to the amatch test script. (check-in: ad71c72b user: drh tags: trunk)
18:16
Merge trunk changes with this branch. (check-in: e294a9c7 user: dan tags: fts4-docid-range-constraints)
18:14
Fix a performance problem in the FTS4 auxiliary functions triggered by an OR clause in the full-text query. (check-in: fa0f2f0e user: dan tags: trunk)
17:37
Fix memory leaks in the amatch extension. Add a few simple test cases. (check-in: 60413473 user: drh tags: trunk)
11:42
Have fts4 full-text queries consider "docid<?" and similar constraints. (check-in: 6622424a user: dan tags: fts4-docid-range-constraints)
11:01
Update and modernize an obsolete comment associated with VACUUM. No changes to code. (check-in: 94c914e3 user: drh tags: trunk)
2013-09-29
04:56
Fix typo in comment. No changes to code. (check-in: 0b7bd468 user: mistachkin tags: trunk)
2013-09-28
16:43
Add new test file fts3defer3.test. (check-in: a6cd14ef user: dan tags: trunk)
13:28
In the nextchar.c extension, allow the second argument to the next_char() function to be a subquery. (check-in: 59b9fa22 user: drh tags: trunk)
12:40
Updates to the sqlite3_analyzer utility: Change the names of some labels, especially change "Fragmentation" to "Non-sequential pages". Revise the computation of non-sequential pages so that it ignores itercalated non-leaf pages (overflow and index pages). (check-in: 3e5c7771 user: drh tags: trunk)