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100 descendants and 100 ancestors of cc910b8e0c45e7387024f3a729003e2fef08b198
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2014-09-02
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| 15:57 | Merge the latest trunk changes into the apple-osx branch. (check-in: 696dc935 user: drh tags: apple-osx) | |
| 15:49 | Merge the latest trunk changes, including the multi-threaded sorter, into the sessions branch. (check-in: d4cce2c7 user: drh tags: sessions) | |
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2014-09-01
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| 23:06 | Update comments in the ANALYZE command that describe how the Stat4Accum objecct is passed around within the VDBE. No changes to functional code. (check-in: 9779c7a9 user: drh tags: trunk) | |
| 22:34 | Avoid a confusing (though correct) argument to the sqlite3_result_blob() function in the implementation of ANALYZE. (check-in: 4cae93f8 user: drh tags: trunk) | |
| 19:29 | For sqlite3_win32_is_nt(), assume WinRT is NT-based and revise #ifdef ordering to prefer the ANSI version of GetVersionEx, when available. (check-in: be0a0372 user: mistachkin tags: trunk) | |
| 18:21 | Tweak the documentation for SQLITE_LIMIT_WORKER_THREADS. No changes to executable code. (check-in: 672e7387 user: drh tags: trunk) | |
| 17:36 | Add support for using separate worker threads to speed large sorts. The SQLITE_MAX_WORKER_THREADS and SQLITE_DEFAULT_WORKER_THREADS compile-time options and the SQLITE_LIMIT_WORKER_THREADS argument to sqlite3_limit() and the "PRAGMA threads=N" pragma are added. (check-in: b1c0f0bc user: drh tags: trunk) | |
| 13:37 | Attempt to make the xDelete method of the unix VFS more robust on VxWorks. (check-in: b0f6b91f user: drh tags: trunk) | |
| 13:29 | Micro-optimizations in sqlite3BtreeNext() and sqlite3BtreePrevious(). (check-in: 839c7996 user: drh tags: trunk) | |
| 01:16 | Fix harmless compiler warnings for MSVC. (check-in: 3ef32461 user: mistachkin tags: trunk) | |
| 01:15 | Merge updates from trunk. (check-in: 51f33cf1 user: mistachkin tags: asciiMode) | |
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2014-08-30
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| 15:49 | In the command-line shell, added options --lookaside, --pagecache, and --scratch used to configure auxiliary memories. (check-in: f61db04b user: drh tags: trunk) | |
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2014-08-29
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| 19:06 | Disable worker threads when SQLITE_THREADSAFE=0. Set the default compile-time maximum number of worker threads to 8 and honor the SQLITE_DEFAULT_WORKER_THREADS compile-time constant (which defaults to 0). (Closed-Leaf check-in: 33fa0410 user: drh tags: threads) | |
| 18:06 | Fix the speedtest1.c test program to set the worker thread count using the threads pragma. (check-in: 2ab4b5ad user: drh tags: threads) | |
| 16:20 | Add SQLITE_LIMIT_WORKER_THREADS for controlling the maximum number of worker threads. (check-in: 1b598c68 user: drh tags: threads) | |
| 14:40 | Merge recent performance enhancements from trunk onto the threads branch. (check-in: 35c44a3c user: drh tags: threads) | |
| 14:20 | Not a fault after all, rather a testing mistake. Move this change back to trunk. Was: Avoid an unnecessary OP_Move operation for expression subqueries. (check-in: 2a74129a user: drh tags: trunk) | |
| 12:29 | Contains a fault. Was: Avoid an unnecessary OP_Move operation for expression subqueries. (Closed-Leaf check-in: 462f42af user: drh tags: mistake) | |
| 11:24 | Add the sqlite3VdbeChangeDest() routine that can be used to eliminate OP_Move opcodes. (Closed-Leaf check-in: 8c57bcc3 user: drh tags: experimental) | |
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2014-08-28
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| 19:38 | Improved WHERETRACE messages for the estimated output row reductions from range scans. (check-in: fdd478bb user: drh tags: trunk) | |
| 17:30 | Fix a problem causing an inaccurate stat4-based estimate for the number of rows visited by a range scan. (check-in: a9daf3ac user: drh tags: trunk) | |
| 17:20 | Add a testcase() macro to help verfity the row estimation logic. (Closed-Leaf check-in: 6ba60952 user: drh tags: stat4-experimental) | |
| 16:01 | Fix a problem causing an inaccurate stat4-based estimate for the number of rows visited by a range scan. (check-in: 052d89b5 user: dan tags: stat4-experimental) | |
| 13:42 | Fix a formatting error ("%d" needed in place of "%g") on a WHERETRACE macro inside of the query planner. This fix applies to debugging logic only. (check-in: c931ca2b user: drh tags: trunk) | |
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2014-08-27
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| 23:18 | Refactor the sqlite3PcacheFetch() routine into three separate routines, which are significantly faster overall and about 100 bytes smaller in size as well. (check-in: bdb6e497 user: drh tags: trunk) | |
| 17:53 | Add a VDBE synopsis comment for clarification. (check-in: 029a6dc7 user: mistachkin tags: trunk) | |
| 17:48 | Add a missing ticket number to a comment in index7.test. (check-in: d8b1c433 user: dan tags: trunk) | |
| 17:37 | When determining whether or not a partial index is usable, do not assume that the cursor number assigned to each table in the query is the same as its index in the FROM clause. Fix for ticket [98d973b8f5]. (check-in: fcebca16 user: dan tags: trunk) | |
| 14:14 | In the sqlite3_context object, keep a pointer to the result value rather than storing the result value in the sqlite3_context object and using memcpy() to move the value back into its register after the function returns. This runs faster and saves over 500 bytes of code space. (check-in: 6c1ee3e3 user: drh tags: trunk) | |
| 03:28 | Factor out the exception paths from sqlite3ValueToText() into a separate function so that the main routine is much faster for the common case of no required type or encoding conversions. (check-in: 1624916c user: drh tags: trunk) | |
| 00:50 | Performance enhancement in sqlite3VdbeMemNulTerminate(). (check-in: f94cacc3 user: drh tags: trunk) | |
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2014-08-26
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| 15:06 | Change the page cache so that a new sqlite3_pcache object is allocated as soon as the page cache is opened, not delayed until the first fetch request. This give a noticable performance boost. The interface between pager and the page cache has changed slightly, which might break ZIPVFS. (check-in: f1f94a97 user: drh tags: trunk) | |
| 02:15 | Merge recent performance enhancements and the CAST operator enhancements into the sessions branch. (check-in: 08ae974a user: drh tags: sessions) | |
| 02:02 | Merge recent performance enhancements and the CAST operator enhancements into the apple-osx branch. (check-in: 5c273111 user: drh tags: apple-osx) | |
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2014-08-25
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| 23:44 | Remove the SQLITE_CONFIG_WORKER_THREADS configuration parameter. The number of worker threads in the sorter is now determined only by the PRAGMA threads=N setting. (check-in: e3305d4b user: drh tags: threads) | |
| 22:43 | Merge the CAST operator enhancements from trunk. (check-in: 6c8f86e4 user: drh tags: threads) | |
| 22:37 | Add an assert() and five testcase() macros to the OP_Cast opcode implementation to help verify that it is fully tested. (check-in: af364cce user: drh tags: trunk) | |
| 21:11 | Minor changes to the CAST logic to make it more testable. (check-in: 1ad70ec5 user: drh tags: trunk) | |
| 20:21 | Test cases added for using unary "+" and CAST operators on the RHS of range constraints and verifying that STAT3/4 can use those constraints. (check-in: 42505e5a user: drh tags: trunk) | |
| 20:11 | Allow CAST expressions and unary "+" operators to be used in the DEFAULT argument of an ALTER TABLE ADD COLUMN and to be understand on the RHS of range constraints interpreted by STAT3/4. This involves a rewrite of the implementation of the CAST operator. (check-in: 91d8a8d0 user: drh tags: trunk) | |
| 18:29 | In cases where stat4 data is available but cannot be used because the rhs of a range constraint is too complex a expression, fall back to using the default estimates for number of rows scanned. (check-in: e06dc6f0 user: dan tags: trunk) | |
| 15:13 | Query or change the maximum number of worker threads allowed on each database connection separately using the "PRAGMA threads" command. (check-in: 29c5e8a7 user: drh tags: threads) | |
| 13:27 | Merge the recent performance enhancements implemented on trunk into the threads branch. (check-in: dfdc900f user: drh tags: threads) | |
| 11:33 | Remove the pager_lookup() function since it is redundant with sqlite3PagerLookup(). (check-in: 54164ce4 user: drh tags: trunk) | |
| 11:20 | Change the name of the VdbeMemRelease() macro to VdbeMemReleaseExtern() to more accurately reflect what it does. Performance enhancement to the sqlite3VdbeMemRelease() function. (check-in: 3ca5846d user: drh tags: trunk) | |
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2014-08-24
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| 02:53 | The sqlite3VdbeChangeEncoding() routine goes about 3x faster if the sqlite3VdbeMemTranslate() subroutine is not inlined. (check-in: 0c7e1b87 user: drh tags: trunk) | |
| 01:32 | Patch the sqlite3PagerWrite() method in the Pager to run a bit faster. (check-in: c63311e2 user: drh tags: trunk) | |
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2014-08-23
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| 23:15 | Faster implementation of pcache1Fetch() (check-in: 0371cc3b user: drh tags: trunk) | |
| 20:25 | Faster implementation of the sqlite3ApiExit() routine. (check-in: bd41d394 user: drh tags: trunk) | |
| 19:42 | Another memory allocator performance optimization. (check-in: 6da6f46d user: drh tags: trunk) | |
| 19:08 | Fix a variable-declaration after code problem in btree.c. Harmless in GCC and CLANG but unacceptable for MSVC. (check-in: 45abd5c0 user: drh tags: trunk) | |
| 19:04 | Changes to sqlite3ScratchMalloc() that make the entire memory allocation interface a little faster and about 100 bytes smaller. (check-in: f83daa16 user: drh tags: trunk) | |
| 18:17 | Make the implementation of the sqlite3_aggregate_context() interface faster for second an subsequent invocations. This helps all aggregate functions to perform better. (check-in: 802148f3 user: drh tags: trunk) | |
| 17:41 | Improved performance in the type handling of arithmetic operators in the VDBE. (check-in: 0c0a6039 user: drh tags: trunk) | |
| 17:21 | Performance optimization in the applyAffinity() logic inside the VDBE. (check-in: 25f2246b user: drh tags: trunk) | |
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2014-08-22
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| 23:33 | Another performance tweak: Split the sqlite3BtreeCursorHasMoved() routine into two with the second routine named sqlite3BtreeCursorRestore(). The first now only reports whether or not the cursor has moved and the second tries to restore the cursor. This allows the sqlite3VdbeCursorMoveto() routine to be refactored to avoid stack pointer movements, for a noticable performance gain. (check-in: ce123b5c user: drh tags: trunk) | |
| 22:26 | Factor the saveAllCursors() routine of btree.c into two separate routines, for a noticable performance improvement. (check-in: 3eb08439 user: drh tags: trunk) | |
| 21:58 | Performance enhancements in the b-tree mutex logic. (check-in: 89145306 user: drh tags: trunk) | |
| 20:35 | Combine the pcacheAddToDirtyList() and pcacheRemoveFromDirtyList() routines into a single pcacheManageDirtyList() routine. The resulting binary code is slightly faster and a few bytes smaller. (check-in: 6bcf1af6 user: drh tags: trunk) | |
| 19:12 | Revise #ifdef ordering to prefer the ANSI version of GetVersionEx, when available. (Closed-Leaf check-in: 9fe0f075 user: mistachkin tags: winrt) | |
| 18:48 | Performance enhancement in sqlite3PutVarint(). (check-in: a929be55 user: drh tags: trunk) | |
| 18:00 | Split the sqlite3Error() routine into sqlite3Error() and sqlite3ErrorWithMsg(), for a slight size reduction and performance increase. (check-in: cf561d1f user: drh tags: trunk) | |
| 15:40 | Performance improvement in the printf() logic by avoiding unnecessary stack pointer movement. (check-in: f7f2160d user: drh tags: trunk) | |
| 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) | |
| 11:11 | Enhance the spellfix extension with the ability to specify a rowid when inserting new rows. (check-in: 369c480c user: drh tags: trunk) | |
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2014-08-21
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| 20:26 | Simplify the interface to the symbol table, saving 600 bytes of code space. (check-in: 14b0f561 user: drh tags: trunk) | |
| 19:11 | For sqlite3_win32_is_nt(), assume WinRT is NT-based. (check-in: 2f59e71f user: mistachkin tags: winrt) | |
| 16:09 | Merge all recent trunk changes, especially the fix for ticket [369d57fb8e5ccdff06f1], but also the skip-scan improvement and performance improvements in the b-tree code. (check-in: 0b9e2c32 user: drh tags: sessions) | |
| 14:10 | Fix a faulty assert() statement. Add comments to clarify the behavior of the sqlite3OpenTableAndIndices() routine in insert.c. Add test cases to verify that the assert() statement is not firing inappropriately. Ticket [369d57fb8e5ccdff06f1]. (check-in: 7029b340 user: drh tags: trunk) | |
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2014-08-20
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| 23:42 | Increase the version number to 3.8.7 (check-in: 91594aae user: drh tags: trunk) | |
| 23:38 | Enhancements to skip-scan such that it is operable when a middle column of an index is skipped while the left-most column is constrained in the WHERE clause. (check-in: bc985caa user: drh tags: trunk) | |
| 18:43 | A small performance improvement in freeSpace() by special-casing the relatively common case of an empty freelist. (check-in: 49f44d35 user: drh tags: trunk) | |
| 17:56 | Reimplement the freeSpace() routine in btree.c so that it runs faster. (check-in: fe4fd014 user: drh tags: trunk) | |
| 14:37 | Refactor local variable names in the freeSpace() routine of btree.c for improved understandability. (check-in: 7e63089a user: drh tags: trunk) | |
| 13:35 | Size reduction and performance improvements in btree.c and the allocateSpace() routine. Also fix an assert() in freeSpace(). (check-in: 121308fa user: drh tags: trunk) | |
| 13:25 | Add SQLITE_API macros in front of interface routines in the test_intarray.c extension. (check-in: eea06617 user: drh tags: trunk) | |
| 13:17 | Change an assert() added by the previous commit into a testcase(). Fix a separate assert() in btree.c:freeSpace(). (Closed-Leaf check-in: fe51d3aa user: drh tags: btree-speedup) | |
| 11:56 | Further size reduction and performance improvement in btree.c:allocateSpace(). (check-in: 1cb1cd64 user: drh tags: btree-speedup) | |
| 10:42 | Fix a typo in the showdb usage message. (check-in: 6c66beae user: dan tags: trunk) | |
| 00:54 | Minor performance improvement and size reduction for the btree-page space allocator. (check-in: 73637d12 user: drh tags: trunk) | |
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2014-08-19
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| 23:04 | Modify the memsubsys1-3.1.4 test so that it does not fail arbitrarily due to variations in the behavior of system malloc(). (check-in: d280157d user: drh tags: trunk) | |
| 20:41 | A better fix for the sqlite3_trace() problem. Ticket [11d5aa455e0d98f3c1e6a] (check-in: 44d5bd4c user: drh tags: trunk) | |
| 20:27 | Make sure the sqlite3_trace() callback is invoked, even if the prepared statement was marked "expired" before it ever entered sqlite3_step(). Ticket [11d5aa455e0d98f3c1e6a08]. (check-in: 0d4d3df4 user: drh tags: trunk) | |
| 19:28 | Improvements to output formatting with the ".trace" command in the command-line shell. (check-in: d09d63c0 user: drh tags: trunk) | |
| 09:15 | Minor changes to do with the Tcl tea extension package autoconf system. (check-in: f10a6111 user: dan tags: trunk) | |
| 00:33 | Disable the hook-7.5.2 tests when using sessions, since that are not correct in that case. (check-in: 6d5b9332 user: drh tags: sessions) | |
| 00:26 | Improved response to error conditions in the ".session" shell command and in the "changeset" command-line program. (check-in: b69f7dd1 user: drh tags: sessions) | |
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2014-08-18
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| 20:23 | Fix the autoconf and MSVC makefiles so that they construct the changeset command-line utility upon request. Delete that utility program when "make clean" is run. (check-in: 4dc15fe0 user: drh tags: sessions) | |
| 20:14 | Fix a harmless compiler warning in the sessionAppendDelete() function. (check-in: 1324d08d user: drh tags: sessions) | |
| 20:08 | Add the "changeset" command-line tool for analyzing and manipulating changesets in files on disk. Add the ".session" command to the command-line tool. (check-in: 31addb62 user: drh tags: sessions) | |
| 20:01 | A reasonably complete implementation of the "changeset" command-line tool and the ".sessions" command in the command-line shell. (Closed-Leaf check-in: 7b12f1f9 user: drh tags: sessions_from_cli) | |
| 17:56 | Add the "changeset" command-line utility for getting an ASCII dump of change sets. (check-in: 55bb3544 user: drh tags: sessions_from_cli) | |
| 16:03 | Add miscellaneous test cases to improve coverage of sessions module. (check-in: 0fac6cff user: dan tags: sessions) | |
| 15:08 | Begin adding commands to the command-line interface for interacting with the sessions extension. This is the first check-in of a work-in-progress. (check-in: c2fcf0b9 user: drh tags: sessions_from_cli) | |
| 13:48 | Merge the latest trunk changes, and in particular the refactoring of the object names in the command-line shell. (check-in: 419d286a user: drh tags: sessions) | |
| 13:45 | Refactor the names of state objects in the command-line shell implementation.. (check-in: 11a70e1a user: drh tags: trunk) | |
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2014-08-15
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| 16:13 | Fix compiler warnings on WinCE. (check-in: 28a379fc user: drh tags: trunk) | |
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2014-08-14
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| 18:31 | Fix compiler warnings on WinCE. (Closed-Leaf check-in: cc910b8e user: mistachkin tags: winCeWarn) | |
| 13:06 | Fix typos in comments used to help generate documentation. No changes to code. (check-in: 13a2d90a user: drh tags: trunk) | |
| 02:59 | Add icon to the Windows shell executable. This is a resource change only, no changes to code. (check-in: f5cce9db user: mistachkin tags: trunk) | |
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2014-08-13
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| 11:39 | Minor change to unixDelete for VxWorks with a DOS filesystem. (check-in: f01d42cc user: drh tags: trunk) | |
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2014-08-12
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| 20:13 | Fix where9.test so that it works with the "no_optimization" permutation. (check-in: d46adf9d user: dan tags: trunk) | |
| 16:13 | Fix compilation issue in the Win32 VFS when manually defining SQLITE_WIN32_NO_ANSI. (check-in: 67159912 user: mistachkin tags: trunk) | |
| 14:29 | Improve the comments associated with SQLITE_TEST_REALLOC_STRESS and add an extra assert() to prove an assumption. (check-in: 35c45461 user: drh tags: trunk) | |
| 14:06 | Run a test with TEST_REALLOC_STRESS and OMIT_LOOKASIDE defined as part of releasetest.tcl on Linux/x86-64. (check-in: a1baf3a7 user: dan tags: trunk) | |
| 13:38 | If SQLITE_TEST_REALLOC_STRESS is defined, extend the op-code array used by virtual-machine programs by one element at a time, instead of doubling its size with each realloc(). (check-in: 4c291827 user: dan tags: trunk) | |
| 12:19 | Fix typos in the VxWorks code of os_unix.c. (check-in: 19682e8f user: drh tags: trunk) | |
| 09:36 | Add a test to ensure that the problem fixed by [a179e41e40] does not recur. (check-in: 31356f2c user: dan tags: trunk) | |
| 01:23 | Fix an assert() statement in the SELECT code generator that was incorrect following an OOM error. (check-in: a179e41e user: drh tags: trunk) | |
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2014-08-11
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| 17:51 | Modify GetVersionEx Win32 VFS fix for use with the test suite. (check-in: fd222176 user: mistachkin tags: trunk) | |
| 17:41 | Further clarification and typo fixes for the previous comment change. (check-in: 87ef9e2f user: drh tags: trunk) | |
| 17:40 | Clarify the comment explaining the meaning of the SQLITE_WIN32_GETVERSIONEX macro in the Windows VFS. (check-in: 69714287 user: drh tags: trunk) | |
| 17:38 | Fix for #ifdef issue with GetVersionEx in the Win32 VFS. (check-in: 1a0d466d user: mistachkin tags: trunk) | |
| 17:37 | Add a few more requirements tests. (check-in: b5652439 user: drh tags: trunk) | |
| 15:54 | Updates to evidence marks and requirements. No changes to code. (check-in: 62d38308 user: drh tags: trunk) | |
| 14:21 | Fix harmless compiler warnings. (check-in: 52b03f04 user: drh tags: trunk) | |
| 13:53 | Changes that will perhaps enable SQLite to work better on VxWorks. (check-in: de27c742 user: drh tags: trunk) | |
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2014-08-08
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| 18:26 | Update requirements marks. No changes to code. (check-in: 7556bd9a user: drh tags: trunk) | |
| 17:49 | Improvements to the way the query planner handles sorting costs, so that very large sorting costs do not overwhelm the loop costs. (check-in: bdaa6947 user: drh tags: trunk) | |
| 17:25 | Fix a buffer overrun in the previous commit. (Closed-Leaf check-in: 43c59c85 user: dan tags: query-planner-fix) | |
| 16:52 | Because SQLite internally calculates query plan costs using a logarithmic scale, very large estimated sorting costs can cause all other estimated costs to be rounded down to zero. In these cases break ties between plans with the same total cost by comparing the costs with sorting excluded. This is an alternative fix for the problem addressed by [2af630c572]. (check-in: 299b9570 user: dan tags: query-planner-fix) | |
| 15:38 | The SQLITE_IOERR_BLOCKED extended error code is not longer used, so remove assert() statements and documentation for that error code. Also make other documentation improvements. (check-in: 36b7c5ce user: drh tags: trunk) | |
| 12:51 | Reworking the documentation on integer result codes. This is a comment and documentation change only. There are no changes to code. (check-in: 54f1df7b user: drh tags: trunk) | |
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2014-08-07
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| 20:42 | When the estimated sorting cost overwhelms the estimated lookup cost, ensure that lookup costs are still taken into account when selecting a lookup algorithm. (check-in: 2af630c5 user: drh tags: trunk) | |
| 20:37 | Clarify the computation of compatible isOrdered by in the plan solver of the query planner. (Closed-Leaf check-in: b5e8fd57 user: drh tags: query-planner-fix) | |
| 20:25 | Remove the extraneous debugging printf() from the previous check-in. (check-in: 8f04d2c0 user: drh tags: query-planner-fix) | |
| 16:50 | Oops! This check-in was on trunk. But it contains a debugging printf(). Original comment: When the estimated cost to do a sort overwhelms the estimated cost to do individual table lookups, make sure that the table lookup costs are still taken into consideration when selecting the lookup algorithm. (check-in: ec5d84ba user: drh tags: query-planner-fix) | |
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2014-08-06
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| 18:50 | A couple more harmless compiler warnings eliminated. (check-in: bcf6d775 user: drh tags: trunk) | |
| 17:49 | Fix two more harmless compiler warnings. Make sure the fts3_unicode2.c file is in sync with mkunicode.tcl. (check-in: a2a60307 user: drh tags: trunk) | |
| 14:36 | Fix harmless compiler warnings. In the command-line shell, report if the ".system" command returns a non-zero result. (check-in: 1202e977 user: drh tags: trunk) | |
| 11:58 | Fix an obsolete comment in the func.c source file. No changes to code. (check-in: 5c6bb57d user: drh tags: trunk) | |
| 11:57 | On the windows VFS, do not try to make InterlockedCompareExchange an overloadable function, since sometimes it is a macro. (check-in: ab1a751e user: drh tags: trunk) | |
| 11:49 | Fix an obsolete comment in the func.c source file. No changes to code. (check-in: 7a145c94 user: drh tags: sessions) | |
| 03:06 | In the Win32 VFS, work around InterlockedCompareExchange() being a macro on some platforms (e.g. x64). (check-in: 7be244ce user: mistachkin tags: trunk) | |
| 01:08 | Fix typos in the opcode documentation. Comment changes only. No changes to code. (check-in: 717245d4 user: drh tags: trunk) | |
| 00:29 | A simpler fix for ticket [3a88d85f36704eebe1] - one that uses less code. The error message is not quite as good, but as this error has apparently not previously occurred in over 8 years of heavy use, that is not seen as a serious problem. (check-in: 0ad1ed8e user: drh tags: trunk) | |
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2014-08-05
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| 21:31 | Ensure that aggregate functions are not used when evaluating a default value for a table column. Candidate fix for ticket [3a88d85f36704eebe134f7]. (check-in: 29ba8128 user: drh tags: trunk) | |
| 19:16 | Add the ability to evaluate IN operators as a sequence of comparisons as an alternative to the long-standing algorithm of building a lookup table. Use the new implementation in circumstances where it is likely to be faster, such as when the RHS of the IN changes between successive evaluations. (check-in: 95286821 user: drh tags: trunk) | |
| 11:04 | Rename the internal Schema.flags field to Schema.schemaFlags. (check-in: 5ae80b3c user: drh tags: trunk) | |
| 00:53 | Improved VdbeCoverage() macros. A few minor simplifications to generated VDBE code. (Closed-Leaf check-in: 01f60027 user: drh tags: IN-operator-improvements) | |
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2014-08-04
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| 21:26 | Part of the change in the previous check-in was incorrect and can result in an incorrect UPDATE for WITHOUT ROWID tables. This check-in fixes the problem. (check-in: ee5f6eae user: drh tags: IN-operator-improvements) | |
| 18:50 | Further enhancements to IN-operator processing. (check-in: 7fdf26da user: drh tags: IN-operator-improvements) | |
| 16:39 | Refinements to the enhanced IN-operator logic. (check-in: 92ba2821 user: drh tags: IN-operator-improvements) | |
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2014-08-02
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| 21:03 | Enhancements to the code generator for the IN operator that result in much faster queries in some cases, for example when the RHS of the IN operator changes for each row of a large table scan. (check-in: 436e8842 user: drh tags: IN-operator-improvements) | |
| 20:44 | Remove (newly) incorrect preprocessor check to fix build on WinRT. (check-in: ba782654 user: mistachkin tags: trunk) | |
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2014-08-01
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| 21:12 | A better comment on the generated code for the NULL-in-RHS-of-IN detection logic. (check-in: 9bc1c730 user: drh tags: trunk) | |
| 21:00 | Improved detection and handling of NULL values on the RHS of a IN operator. (check-in: 468e7300 user: drh tags: trunk) | |
| 18:00 | Remove an unnecessary OP_Null in the IN-operator logic. Attempt to clarify comments explaining the IN-operator code, though it is not clear that the comments are correct even yet - more work to be done. (check-in: c11e55fa user: drh tags: trunk) | |
| 15:51 | Clean up the IN operator code generation logic to make it easier to reason about. In the process, improve code generation to omit some unused OP_Null operations. (check-in: 7c6fbcfe user: drh tags: trunk) | |
| 15:34 | The idea of coding IN operator with a short list on the RHS as an OR expression turns out to be helpful. If the list is of length 1 or 2, the OR expression is very slightly faster, but the ephemeral table approach is clearly better for all list lengths greater than 2. Better to keep the code simple. (Closed-Leaf check-in: e13175d3 user: drh tags: IN-operator-improvements) | |
| 14:46 | Begin making changes to the IN operator in an attempt to make it run faster and to make the code easier to understand. (check-in: ee0fd6aa user: drh tags: IN-operator-improvements) | |
| 01:40 | Enhance the PRAGMA integrity_check command to detect UNIQUE and NOT NULL constraint violations. (check-in: 9abcf269 user: drh tags: trunk) | |
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2014-07-31
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| 22:59 | Refactoring: Change "pIndex->onError!=OE_None" to use a macro: "IsUniqueIndex(pIndex)". Easier to understand that way. (check-in: e75b26ee user: drh tags: trunk) | |
| 20:16 | Omit a pointless OP_Null when processing a value-list RHS of an IN operator where the LHS is a rowid. (check-in: 1361450a user: drh tags: trunk) | |
| 18:54 | Optimizations to the OS sub-type checking in the Win32 VFS. (check-in: 1e5489fa user: mistachkin tags: trunk) | |
| 18:14 | Add a missing call to "test_sqlite3_log" to multiplex.test. (check-in: 0708f9df user: dan tags: trunk) | |
| 17:35 | Fix a leaked database handle in pager2.test. (check-in: 47457b04 user: dan tags: trunk) | |
| 15:44 | Deactivate the DISTINCT in a SELECT on the right-hand side of an IN operator, since it should not make any difference in the output but dues consume extra memory and CPU time. (check-in: f4cb5365 user: drh tags: trunk) | |
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2014-07-30
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| 23:11 | Re-integrate the recent changes from the 'winMutex' branch back into the Win32 mutex subsystem. (check-in: 5360ecb0 user: mistachkin tags: trunk) | |
| 21:10 | Add three new static mutexes for use by the application. This is a partial import of changes from the threads branch. (check-in: 3aad0196 user: drh tags: trunk) | |
| 15:43 | Add the "eForce" parameter to the sqlite3_multiplex_shutdown() entry point in test_multiplex.c. Shutdown is forced if true. Shutdown is not done if there are pending database connections and eForce is false, but an error log entry is made instead. (check-in: c7303d01 user: drh tags: trunk) | |
| 13:56 | Ensure that the correct number of columns in a UNIQUE index are checked for uniqueness, regardless of whether or not the original table has a ROWID or if the columns are NOT NULL, etc. Ticket [9a6daf340df99ba93c]. (check-in: 6b785e92 user: drh tags: trunk) | |
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2014-07-29
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| 19:54 | Enhancements and updates to the Win32 mutex subsystem. (check-in: ca9868cd user: mistachkin tags: trunk) | |
| 18:03 | Merge updates from trunk. (Closed-Leaf check-in: 08c9a4ea user: mistachkin tags: winMutex) | |
| 14:09 | Add the SQLITE_TESTCTRL_ISINIT file control. (check-in: 8b651d4d user: drh tags: trunk) | |
| 11:54 | Have calls to the xFilter() method of rtree virtual tables ensure that cursor is initialized before proceeding. Fix for [d2889096e7bdeac]. (check-in: 8cc41b0b user: dan tags: trunk) | |
| 05:49 | Enhancements and updates to the Win32 mutex subsystem. (check-in: 18984c32 user: mistachkin tags: winMutex) | |
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2014-07-26
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| 20:12 | Remove an unreachable branch from the sqlite3_value_numeric_type() interface. (check-in: 5350229b user: drh tags: trunk) | |
| 16:47 | Avoid unnecessary no-op calls to applyNumericAffinity() for a small performance improvement. (check-in: 413d7287 user: drh tags: trunk) | |
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2014-07-25
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| 21:35 | Try to fix harmless compiler warnings reported by Fortify. (check-in: e0fa6fdc user: drh tags: trunk) | |
| 18:37 | Improved comments on VDBE opcodes, for better documentation. No code or logic changes. (check-in: 2d32e487 user: drh tags: trunk) | |
| 18:01 | Add constraints (enforced only when SQLITE_DEBUG is enabled) on the use of OP_Next and OP_Prev. (check-in: 2230c74f user: drh tags: trunk) | |
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2014-07-24
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| 23:23 | Improve the performance of the ANALYZE command by taking advantage of UNIQUE constraints on indices. (check-in: 114dcf33 user: drh tags: trunk) | |
| 22:41 | Fix a bug in the whereRangeSkipScanEst() procedure (added by check-in [d09ca6d5efad3e4cfa]) where it fails to consider the possibility of a ROWID column when computing the affinity of a table column. (check-in: 6aea2258 user: drh tags: trunk) | |
| 20:25 | Avoid trying to allocation zero bytes when analyzing a unique non-null index. (Closed-Leaf check-in: 85e2bade user: drh tags: faster-analyze) | |
| 19:54 | Avoid change tests when analyzing single-column unique indexes after getting past the initial NULL entries. (check-in: 4690e99c user: drh tags: faster-analyze) | |
| 12:39 | Add the readfile(FILENAME) and writefile(FILENAME,CONTENT) SQL functions to the command-line shell. (check-in: fb1048cb user: drh tags: trunk) | |
| 12:19 | Add support for hexadecimal integer literals in the parser. (check-in: f8f79f28 user: drh tags: trunk) | |
| 12:09 | In the command-line shell, in CSV output mode, terminate rows with CRNL but do not expand NL characters in data into CRNL. Provide the extra -newline command-line option and the extra argument to .separator to designate an alternative newline character sequence for CSV output. (check-in: 16c8ce10 user: drh tags: trunk) | |
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2014-07-23
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| 23:57 | Add experimental "costmult" logic. Only enabled when compiled with -DSQLITE_ENABLE_COSTMULT. (check-in: 729ece40 user: drh tags: trunk) | |
| 19:37 | Ugh. Consecutive UNIQUE index entries are only distinct if the index is on NOT NULL columns. So the previous version was not quite right. This check-in fixes the problem. (check-in: 30033f96 user: drh tags: faster-analyze) | |
| 19:04 | Enhancements to the hex literal tests. (Closed-Leaf check-in: a3cc027f user: mistachkin tags: hex-literal) | |
| 18:36 | Improve the performance of the ANALYZE command by taking advantage of the fact that every row of a UNIQUE index is distinct. (check-in: 3e1e79e1 user: drh tags: faster-analyze) | |
| 15:51 | Updated documentation on sqlite3_temp_directory. No changes to code. (check-in: e6225a7b user: drh tags: trunk) | |
| 14:52 | Remove a surplus function prototype. #ifdef code that is not used when hex integers are omitted at compile time. (check-in: a5b383e0 user: drh tags: hex-literal) | |
| 13:40 | Change the hex literal processing so that only the SQL parser understands hex literals. Casting and coercing string literals into numeric values does not understand hexadecimal integers. This preserves backwards compatibility. Also: Throw an error on any hex literal that is too big to fit into 64 bits. (check-in: 6c6f0de5 user: drh tags: hex-literal) | |
| 02:07 | Casting hex literals directly from string to float always results in a positive number. (check-in: 4b86ccdf user: drh tags: hex-literal) | |
| 01:59 | Reformatting a few test cases for clarity. (check-in: 7e1bbacb user: drh tags: hex-literal) | |
| 01:56 | Test cases for hex literals. (check-in: 19054339 user: drh tags: hex-literal) | |
| 01:26 | Add support for parsing C-style hexadecimal literals. (check-in: 34a1f38b user: drh tags: hex-literal) | |
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2014-07-22
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| 22:46 | When running ANALYZE, it is not necessary to check the right-most key column for changes since that column will always change if none of the previous columns have. (check-in: 48f40861 user: drh tags: trunk) | |
| 20:02 | Add the OP_ReopenIdx opcode that works like OP_OpenRead except that it becomes a no-op if the cursor is already open on the same index. Update the OR-optimization logic to make use of OP_ReopenIdx in order to avoid unnecessary cursor open requests sent to the B-Tree layer. (check-in: 77f412ca user: drh tags: trunk) | |
| 19:14 | The optimization of check-in [b67a6e33f2] does not work (it generates incorrect VDBE code) if an OR term is AND-ed with a constant expression. So back that optimization out and add a test case to make sure it does not get added back in. (check-in: eed754fe user: drh tags: trunk) | |
| 16:00 | Fix the index name for the shadow tables in the spellfix1 extension so that multiple instances of the spellfix1 virtual table can each have their own index. (check-in: 438c348a user: drh tags: trunk) | |
| 15:33 | Correction: The maximum SQLITE_MAX_ATTACHED value to avoid overflowing a signed 8-bit integer is 125, not 127. (check-in: 48e37802 user: drh tags: trunk) | |
| 14:58 | Enhance the sqlite_stat1.stat parsing to allow additional text parameters at the end. Unrecognized parameters are silently ignored. (check-in: ca2a5a2c user: drh tags: trunk) | |
| 14:42 | Expire prepared statements after running ANALYZE. (check-in: b083a961 user: drh tags: trunk) | |
| 12:05 | Enhance the comment on whereLoopAddBtree(). No changes to code. (check-in: b22dd165 user: drh tags: trunk) | |