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200 most recent timeline items related to "trunk"

2014-09-16
14:55
[a10a6bba49] Leaf: Remove an unused parameter from sqlite3VdbeIdxRowid(). This is cosmetic only as the C-compiler optimizers were already omitting this parameter on amalgamation builds. (user: drh, tags: trunk)
14:37
[8239c35aed] Reduce the number of arguments to RecordCompare functions from 4 to 3, resulting in a small performance increase. (user: drh, tags: trunk)
14:16
[0be3019ed7] Reorder the elements of the Mem object for a small size reduction and performance improvement. (user: drh, tags: trunk)
13:30
[8fb90da77c] Changes to sqlite3VdbeRecordUnpack() to make it slightly smaller and faster. (user: drh, tags: trunk)
03:24
[20ed2321b0] Performance improvement to the sqlite3MemCompare() routine by factoring out sqlite3BlobCompare(). (user: drh, tags: trunk)
2014-09-15
16:57
[5efafef51d] Merge latest trunk fixes into this branch. (user: dan, tags: experimental-bulk-update)
16:53
[4060efb646] Fix tool/showwal.c so that it handles WAL files that contain 64KiB pages. (user: dan, tags: trunk)
16:50
[dedaa6fb3d] Avoid attempting to call the xFetch() method of an sqlite3_io_methods object with a version number less than 3. (user: dan, tags: trunk)
15:34
[55b8011d5b] Merge latest trunk changes with this branch. (user: dan, tags: experimental-bulk-update)
14:59
[69a6456077] Remove the EXPENSIVE_ASSERTS in pcache.c having to do with the pSynced field of the Pcache object, as they are incorrect, as revealed by recent pcache enhancements. (user: drh, tags: trunk)
14:46
[0bdf1a086b] Do not flatten aggregate subqueries that contain min() or max() functions so that if the min()/max() are discarded by the outer query, they still function and cause non-aggregate expression to be evaluated on the minimal or maximal row. (user: drh, tags: trunk)
11:14
[4ff0eb96bc] Adjust comments to show that subquery flattening restriction (10) was removed from the code back in 2005. This is a comment change only. (user: drh, tags: trunk)
2014-09-12
20:30
[b332a84d51] Small performance improvement to the dirty list handling in the pager. (user: drh, tags: trunk)
17:41
[320556233e] Simplify the way the column cache is managed around OP_Move instructions. (user: drh, tags: trunk)
04:28
[2f69a1fa6a] Fix a problem with parser memory allocation on 32-bit systems. (user: drh, tags: trunk)
2014-09-11
23:34
[34292b084e] Fix an issue with sqlite3_bind_text64() with the SQLITE_UTF16 encoding parameter. Remove some unreachable code from the text64() and blob64() implementation. (user: drh, tags: trunk)
18:44
[7e4978c003] Add new APIs that take 64-bit length parameters: sqlite3_malloc64(), sqlite3_realloc64(), sqlite3_bind_blob64(), sqlite3_bind_text64(), sqlite3_result_blob64(), and sqlite3_result_text64(). Add the sqlite3_msize() interface. Internal memory allocation routines now use 64-bit unsigned length parameters for safety. Fix the sqlite3_get_table() to use sqlite3_realloc64() to avoid a integer overflow problem. (user: drh, tags: trunk)
17:27
[65884d4f81] Add the SQLITE_USER_AUTHENTICATION extension to the trunk. This extension is disabled by default. Special compilation procedures are need to enable it. (user: drh, tags: trunk)
17:14
[b149ef5c63] Closed-Leaf: Clean up some #includes in the extension API implementation. (user: drh, tags: user-auth)
2014-09-09
20:30
[6ab76c5fed] Closed-Leaf: Change the name of the _texte64() interfaces to just _test64(), without the "e". (user: drh, tags: 64-bit-lengths)
17:27
[94954850cf] Add new APIs that take 64-bit length parameters: sqlite3_malloc64(), sqlite3_realloc64(), sqlite3_bind_blob64(), sqlite3_bind_texte64(), sqlite3_result_blob64(), and sqlite3_result_texte64(). Internal memory allocation routines also now use 64-bit unsigned length parameters for safety. Also add the sqlite3_msize() interface. Fix the sqlite3_get_table() to use sqlite3_realloc64() to avoid a integer overflow problem. (user: drh, tags: 64-bit-lengths)
14:47
[8440f093ba] Non-working preliminary implementation attempts on user authentication. (user: drh, tags: user-auth)
2014-09-08
15:04
[c2885c6bb2] Leaf: Merge support for large files on Android from trunk. (user: drh, tags: sessions)
2014-09-06
17:06
[ad7063aa1a] Fixes to os_unix.c to support database (and other) files larger than 2GiB on Android. (user: dan, tags: trunk)
16:52
[9dca7ce557] Leaf: Merge latest trunk changes with this branch. (user: dan, tags: android-large-filles)
16:49
[e7fae33c07] Fixes to os_unix.c to support database (and other) files larger than 2GiB. (user: dan, tags: android-large-filles)
16:39
[e62aab5e92] Fix typos in comments. No code changes. (user: peter.d.reid, tags: trunk)
03:38
[4d4fb197dc] Do not record a page-size change if the attempt to change the page size failed due to an OOM error. (user: drh, tags: trunk)
03:16
[27e3ca3e0f] Add the sqlite3_memdebug_title_count global variable, used during debugging to count the number of invocations of test_memdebug_settitle. By examining this variable in the debugger after a segfault, one can then set a breakpoint on test_memdebug_settitle that will fire just before the problem. (user: drh, tags: trunk)
02:00
[a758465e3c] Fix a couple of typos in comments. No changes to code. (user: mistachkin, tags: trunk)
01:35
[73954f93c4] Query planner heuristic update: When doing a full table scan on a table that has an equality constraint on an unindexed column, do not allow the estimated number of output rows to be greater than half the total number of rows in the table. (user: drh, tags: trunk)
2014-09-05
05:58
[733119067757814609a] Fix harmless compiler warning. (user: mistachkin, tags: trunk)
2014-09-02
19:59
[2954ab5010] Add an experimental extension for applying bulk updates to databases. (user: dan, tags: experimental-bulk-update)
15:57
[696dc935f7] Leaf: Merge the latest trunk changes into the apple-osx branch. (user: drh, tags: apple-osx)
15:49
[d4cce2c71e] Merge the latest trunk changes, including the multi-threaded sorter, into the sessions branch. (user: drh, tags: sessions)
2014-09-01
23:06
[9779c7a9eb] Update comments in the ANALYZE command that describe how the Stat4Accum objecct is passed around within the VDBE. No changes to functional code. (user: drh, tags: trunk)
22:34
[4cae93f8ae] Avoid a confusing (though correct) argument to the sqlite3_result_blob() function in the implementation of ANALYZE. (user: drh, tags: trunk)
19:29
[be0a037244] For sqlite3_win32_is_nt(), assume WinRT is NT-based and revise #ifdef ordering to prefer the ANSI version of GetVersionEx, when available. (user: mistachkin, tags: trunk)
18:21
[672e7387b1] Tweak the documentation for SQLITE_LIMIT_WORKER_THREADS. No changes to executable code. (user: drh, tags: trunk)
17:36
[b1c0f0bc1b] 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. (user: drh, tags: trunk)
13:37
[b0f6b91f36] Attempt to make the xDelete method of the unix VFS more robust on VxWorks. (user: drh, tags: trunk)
13:29
[839c7996ee] Micro-optimizations in sqlite3BtreeNext() and sqlite3BtreePrevious(). (user: drh, tags: trunk)
01:16
[3ef3246120] Fix harmless compiler warnings for MSVC. (user: mistachkin, tags: trunk)
01:15
[51f33cf129] Leaf: Merge updates from trunk. (user: mistachkin, tags: asciiMode)
2014-08-30
15:49
[f61db04be4] In the command-line shell, added options --lookaside, --pagecache, and --scratch used to configure auxiliary memories. (user: drh, tags: trunk)
2014-08-29
19:06
[33fa041049] Closed-Leaf: 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). (user: drh, tags: threads)
14:40
[35c44a3c73] Merge recent performance enhancements from trunk onto the threads branch. (user: drh, tags: threads)
14:20
[2a74129a21] Note a fault after all, rather a testing mistake. Move this change back to trunk. Was: Avoid an unnecessary OP_Move operation for expression subqueries. (user: drh, tags: trunk)
12:29
[462f42af52] Closed-Leaf: Contains a fault. Was: Avoid an unnecessary OP_Move operation for expression subqueries. (user: drh, tags: mistake)
11:24
[8c57bcc327] Closed-Leaf: Add the sqlite3VdbeChangeDest() routine that can be used to eliminate OP_Move opcodes. (user: drh, tags: experimental)
2014-08-28
19:38
[fdd478bb11] Improved WHERETRACE messages for the estimated output row reductions from range scans. (user: drh, tags: trunk)
17:30
[a9daf3ac44] Fix a problem causing an inaccurate stat4-based estimate for the number of rows visited by a range scan. (user: drh, tags: trunk)
17:20
[6ba609522e] Closed-Leaf: Add a testcase() macro to help verfity the row estimation logic. (user: drh, tags: stat4-experimental)
16:01
[052d89b554] Fix a problem causing an inaccurate stat4-based estimate for the number of rows visited by a range scan. (user: dan, tags: stat4-experimental)
13:42
[c931ca2b77] 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. (user: drh, tags: trunk)
2014-08-27
23:18
[bdb6e4978d] Refactor the sqlite3PcacheFetch() routine into three separate routines, which are significantly faster overall and about 100 bytes smaller in size as well. (user: drh, tags: trunk)
17:53
[029a6dc744] Add a VDBE synopsis comment for clarification. (user: mistachkin, tags: trunk)
17:48
[d8b1c43361] Add a missing ticket number to a comment in index7.test. (user: dan, tags: trunk)
17:37
[fcebca166f] 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]. (user: dan, tags: trunk)
14:14
[6c1ee3e388] 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. (user: drh, tags: trunk)
03:28
[1624916c6e] 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. (user: drh, tags: trunk)
00:50
[f94cacc393] Performance enhancement in sqlite3VdbeMemNulTerminate(). (user: drh, tags: trunk)
2014-08-26
15:06
[f1f94a971e] 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. (user: drh, tags: trunk)
02:15
[08ae974ac8] Merge recent performance enhancements and the CAST operator enhancements into the sessions branch. (user: drh, tags: sessions)
02:02
[5c27311105] Merge recent performance enhancements and the CAST operator enhancements into the apple-osx branch. (user: drh, tags: apple-osx)
2014-08-25
22:43
[6c8f86e4e0] Merge the CAST operator enhancements from trunk. (user: drh, tags: threads)
22:37
[af364cce9d] Add an assert() and five testcase() macros to the OP_Cast opcode implementation to help verify that it is fully tested. (user: drh, tags: trunk)
21:11
[1ad70ec550] Minor changes to the CAST logic to make it more testable. (user: drh, tags: trunk)
20:21
[42505e5a81] Test cases added for using unary "+" and CAST operators on the RHS of range constraints and verifying that STAT3/4 can use those constraints. (user: drh, tags: trunk)
20:11
[91d8a8d0b7] 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. (user: drh, tags: trunk)
18:29
[e06dc6f0c3] 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. (user: dan, tags: trunk)
13:27
[dfdc900f5d] Merge the recent performance enhancements implemented on trunk into the threads branch. (user: drh, tags: threads)
11:33
[54164ce47c] Remove the pager_lookup() function since it is redundant with sqlite3PagerLookup(). (user: drh, tags: trunk)
11:20
[3ca5846da7] Change the name of the VdbeMemRelease() macro to VdbeMemReleaseExtern() to more accurately reflect what it does. Performance enhancement to the sqlite3VdbeMemRelease() function. (user: drh, tags: trunk)
2014-08-24
02:53
[0c7e1b875a] The sqlite3VdbeChangeEncoding() routine goes about 3x faster if the sqlite3VdbeMemTranslate() subroutine is not inlined. (user: drh, tags: trunk)
01:32
[c63311e2f3] Patch the sqlite3PagerWrite() method in the Pager to run a bit faster. (user: drh, tags: trunk)
2014-08-23
23:15
[0371cc3bb0] Faster implementation of pcache1Fetch() (user: drh, tags: trunk)
20:25
[bd41d394d4] Faster implementation of the sqlite3ApiExit() routine. (user: drh, tags: trunk)
19:42
[6da6f46d0c] Another memory allocator performance optimization. (user: drh, tags: trunk)
19:08
[45abd5c0ba] Fix a variable-declaration after code problem in btree.c. Harmless in GCC and CLANG but unacceptable for MSVC. (user: drh, tags: trunk)
19:04
[f83daa16f6] Changes to sqlite3ScratchMalloc() that make the entire memory allocation interface a little faster and about 100 bytes smaller. (user: drh, tags: trunk)
18:17
[802148f311] Make the implementation of the sqlite3_aggregate_context() interface faster for second an subsequent invocations. This helps all aggregate functions to perform better. (user: drh, tags: trunk)
17:41
[0c0a603950] Improved performance in the type handling of arithmetic operators in the VDBE. (user: drh, tags: trunk)
17:21
[25f2246be4] Performance optimization in the applyAffinity() logic inside the VDBE. (user: drh, tags: trunk)
2014-08-22
23:33
[ce123b5c59] 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. (user: drh, tags: trunk)
22:26
[3eb0843903] Factor the saveAllCursors() routine of btree.c into two separate routines, for a noticable performance improvement. (user: drh, tags: trunk)
21:58
[8914530644f] Performance enhancements in the b-tree mutex logic. (user: drh, tags: trunk)
20:35
[6bcf1af6a4] Combine the pcacheAddToDirtyList() and pcacheRemoveFromDirtyList() routines into a single pcacheManageDirtyList() routine. The resulting binary code is slightly faster and a few bytes smaller. (user: drh, tags: trunk)
19:12
[9fe0f0754c] Leaf: Revise #ifdef ordering to prefer the ANSI version of GetVersionEx, when available. (user: mistachkin, tags: winrt)
18:48
[a929be5519] Performance enhancement in sqlite3PutVarint(). (user: drh, tags: trunk)
18:00
[cf561d1f0b] Split the sqlite3Error() routine into sqlite3Error() and sqlite3ErrorWithMsg(), for a slight size reduction and performance increase. (user: drh, tags: trunk)
15:40
[f7f2160db0] Performance improvement in the printf() logic by avoiding unnecessary stack pointer movement. (user: drh, tags: trunk)
15:19
[ebc10e46c1] Improve the performance and reduce the size of the sqlite3VdbeSerialGet() routine by avoiding the use of stack. (user: drh, tags: trunk)
14:56
[3f55484e81] Closed-Leaf: Handle the 4-byte integer case in the stackless routine. (user: drh, tags: experimental)
14:34
[8267d82174] Get the sqlite3VdbeSerialGet() routine to run faster by avoiding the use of local variables. (user: drh, tags: experimental)
13:22
[750bb0a096] Change a while-loop into a do-loop in sqlite3VdbeSerialPut() for a small size reduction and performance improvement. (user: drh, tags: trunk)
11:11
[369c480cda] Enhance the spellfix extension with the ability to specify a rowid when inserting new rows. (user: drh, tags: trunk)
2014-08-21
20:26
[14b0f561fe] Simplify the interface to the symbol table, saving 600 bytes of code space. (user: drh, tags: trunk)
19:11
[2f59e71fbf] For sqlite3_win32_is_nt(), assume WinRT is NT-based. (user: mistachkin, tags: winrt)
16:09
[0b9e2c3269] 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. (user: drh, tags: sessions)
14:10
[7029b3404d] 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]. (user: drh, tags: trunk)
2014-08-20
23:42
[91594aae07] Increase the version number to 3.8.7 (user: drh, tags: trunk)
23:38
[bc985caa78] 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. (user: drh, tags: trunk)
18:43
[49f44d355f] A small performance improvement in freeSpace() by special-casing the relatively common case of an empty freelist. (user: drh, tags: trunk)
17:56
[fe4fd014b4] Reimplement the freeSpace() routine in btree.c so that it runs faster. (user: drh, tags: trunk)
14:37
[7e63089a19] Refactor local variable names in the freeSpace() routine of btree.c for improved understandability. (user: drh, tags: trunk)
13:35
[121308fa86] Size reduction and performance improvements in btree.c and the allocateSpace() routine. Also fix an assert() in freeSpace(). (user: drh, tags: trunk)
13:25
[eea0661798] Add SQLITE_API macros in front of interface routines in the test_intarray.c extension. (user: drh, tags: trunk)
13:17
[fe51d3aa0c] Closed-Leaf: Change an assert() added by the previous commit into a testcase(). Fix a separate assert() in btree.c:freeSpace(). (user: drh, tags: btree-speedup)
11:56
[1cb1cd6493] Further size reduction and performance improvement in btree.c:allocateSpace(). (user: drh, tags: btree-speedup)
10:42
[6c66beae97] Fix a typo in the showdb usage message. (user: dan, tags: trunk)
00:54
[73637d12e3] Minor performance improvement and size reduction for the btree-page space allocator. (user: drh, tags: trunk)
2014-08-19
23:04
[d280157da0] Modify the memsubsys1-3.1.4 test so that it does not fail arbitrarily due to variations in the behavior of system malloc(). (user: drh, tags: trunk)
20:41
[44d5bd4cc3] A better fix for the sqlite3_trace() problem. Ticket [11d5aa455e0d98f3c1e6a] (user: drh, tags: trunk)
20:27
[0d4d3df4bc] Make sure the sqlite3_trace() callback is invoked, even if the prepared statement was marked "expired" before it ever entered sqlite3_step(). Ticket [11d5aa455e0d98f3c1e6a08]. (user: drh, tags: trunk)
19:28
[d09d63c077] Improvements to output formatting with the ".trace" command in the command-line shell. (user: drh, tags: trunk)
09:15
[f10a611126] Minor changes to do with the Tcl tea extension package autoconf system. (user: dan, tags: trunk)
2014-08-18
13:48
[419d286a2f] Merge the latest trunk changes, and in particular the refactoring of the object names in the command-line shell. (user: drh, tags: sessions)
13:45
[11a70e1ae7] Refactor the names of state objects in the command-line shell implementation.. (user: drh, tags: trunk)
2014-08-15
16:13
[28a379fcd4] Fix compiler warnings on WinCE. (user: drh, tags: trunk)
16:10
[b91fcb3b1b] Merge the 3.8.6 changes into the apple-osx branch. (user: drh, tags: apple-osx)
15:46
[05807c4122] Merge the 3.8.6 release into the threads branch. (user: drh, tags: threads)
15:10
[2acbeac1fd] Update the sessions branch for version 3.8.6. (user: drh, tags: sessions)
11:46
[9491ba7d73] Version 3.8.6 (user: drh, tags: trunk, release, version-3.8.6)
2014-08-14
19:53
[3f45b8192d] Fix an assert that can fail if the database file is corrupted. (user: dan, tags: trunk)
18:31
[cc910b8e0c] Closed-Leaf: Fix compiler warnings on WinCE. (user: mistachkin, tags: winCeWarn)
14:02
[a608fd1d52] Merge the pre-3.8.6 changes into the threads branch. (user: drh, tags: threads)
13:39
[08058df3af] Merge the pre-3.8.6 changes from trunk into the apple-osx branch. (user: drh, tags: apple-osx)
13:06
[13a2d90a28] Fix typos in comments used to help generate documentation. No changes to code. (user: drh, tags: trunk)
02:59
[f5cce9db10] Add icon to the Windows shell executable. This is a resource change only, no changes to code. (user: mistachkin, tags: trunk)
2014-08-13
14:43
[d49455d9a9] Merge the trunk changes for 3.8.6 beta3 into the sessions branch. (user: drh, tags: sessions)
11:39
[f01d42cc8b] Minor change to unixDelete for VxWorks with a DOS filesystem. (user: drh, tags: trunk)
2014-08-12
20:13
[d46adf9d8f] Fix where9.test so that it works with the "no_optimization" permutation. (user: dan, tags: trunk)
16:13
[6715991296886c] Fix compilation issue in the Win32 VFS when manually defining SQLITE_WIN32_NO_ANSI. (user: mistachkin, tags: trunk)
14:29
[35c4546163] Improve the comments associated with SQLITE_TEST_REALLOC_STRESS and add an extra assert() to prove an assumption. (user: drh, tags: trunk)
14:06
[a1baf3a7b1] Run a test with TEST_REALLOC_STRESS and OMIT_LOOKASIDE defined as part of releasetest.tcl on Linux/x86-64. (user: dan, tags: trunk)
13:38
[4c29182722] 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(). (user: dan, tags: trunk)
13:32
[169fc47e16] Leaf: Remove support for Win9x. (user: drh, tags: drop-win9x-support)
12:19
[19682e8fdc] Fix typos in the VxWorks code of os_unix.c. (user: drh, tags: trunk)
09:36
[31356f2cae] Add a test to ensure that the problem fixed by a179e41e40 does not recur. (user: dan, tags: trunk)
01:23
[a179e41e40] Fix an assert() statement in the SELECT code generator that was incorrect following an OOM error. (user: drh, tags: trunk)
2014-08-11
17:51
[fd2221768b] Modify GetVersionEx Win32 VFS fix for use with the test suite. (user: mistachkin, tags: trunk)
17:41
[87ef9e2f29] Further clarification and typo fixes for the previous comment change. (user: drh, tags: trunk)
17:40
[69714287db] Clarify the comment explaining the meaning of the SQLITE_WIN32_GETVERSIONEX macro in the Windows VFS. (user: drh, tags: trunk)
17:38
[1a0d466dd4] Fix for #ifdef issue with GetVersionEx in the Win32 VFS. (user: mistachkin, tags: trunk)
17:37
[b5652439d5] Add a few more requirements tests. (user: drh, tags: trunk)
15:54
[62d38308b5] Updates to evidence marks and requirements. No changes to code. (user: drh, tags: trunk)
14:21
[52b03f045e] Fix harmless compiler warnings. (user: drh, tags: trunk)
13:53
[de27c742c0] Changes that will perhaps enable SQLite to work better on VxWorks. (user: drh, tags: trunk)
2014-08-08
18:26
[7556bd9aa5] Update requirements marks. No changes to code. (user: drh, tags: trunk)
17:49
[bdaa694737] Improvements to the way the query planner handles sorting costs, so that very large sorting costs do not overwhelm the loop costs. (user: drh, tags: trunk)
17:25
[43c59c8543] Closed-Leaf: Fix a buffer overrun in the previous commit. (user: dan, tags: query-planner-fix)
16:52
[299b957027] 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. (user: dan, tags: query-planner-fix)
15:38
[36b7c5cefc] 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. (user: drh, tags: trunk)
12:51
[54f1df7b63] Reworking the documentation on integer result codes. This is a comment and documentation change only. There are no changes to code. (user: drh, tags: trunk)
2014-08-07
20:42
[2af630c572] When the estimated sorting cost overwhelms the estimated lookup cost, ensure that lookup costs are still taken into account when selecting a lookup algorithm. (user: drh, tags: trunk)
20:37
[b5e8fd575a] Closed-Leaf: Clarify the computation of compatible isOrdered by in the plan solver of the query planner. (user: drh, tags: query-planner-fix)
16:50
[ec5d84ba69] 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. (user: drh, tags: query-planner-fix)
2014-08-06
18:50
[bcf6d775f9] A couple more harmless compiler warnings eliminated. (user: drh, tags: trunk)
17:49
[a2a60307ea] Fix two more harmless compiler warnings. Make sure the fts3_unicode2.c file is in sync with mkunicode.tcl. (user: drh, tags: trunk)
14:36
[1202e9771f] Fix harmless compiler warnings. In the command-line shell, report if the ".system" command returns a non-zero result. (user: drh, tags: trunk)
12:00
[69018967f6] Merge the second InterlockedCompareExchange() fix from trunk. (user: drh, tags: sessions)
11:58
[5c6bb57d90] Fix an obsolete comment in the func.c source file. No changes to code. (user: drh, tags: trunk)
11:57
[ab1a751e13] On the windows VFS, do not try to make InterlockedCompareExchange an overloadable function, since sometimes it is a macro. (user: drh, tags: trunk)
03:16
[091aa5f104] Merge in the fix for the InterlockedCompareExchange() build issue. (user: drh, tags: sessions)
03:06
[7be244ce12] In the Win32 VFS, work around InterlockedCompareExchange() being a macro on some platforms (e.g. x64). (user: mistachkin, tags: trunk)
02:03
[a353a8515f] Merge all recent changes from trunk. (user: drh, tags: threads)
01:51
[b2e01080cc] Merge 3.8.6 beta changes in from trunk. (user: drh, tags: apple-osx)
01:25
[68a6d5e2f4] Merge the latest 3.8.6 beta changes from trunk. (user: drh, tags: sessions)
01:08
[717245d487] Fix typos in the opcode documentation. Comment changes only. No changes to code. (user: drh, tags: trunk)
00:29
[0ad1ed8ef0] 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. (user: drh, tags: trunk)
2014-08-05
21:31
[29ba812825] Ensure that aggregate functions are not used when evaluating a default value for a table column. Candidate fix for ticket [3a88d85f36704eebe134f7]. (user: drh, tags: trunk)
19:16
[952868216854e] 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. (user: drh, tags: trunk)
11:04
[5ae80b3c8f] Rename the internal Schema.flags field to Schema.schemaFlags. (user: drh, tags: trunk)
00:53
[01f60027ad] Closed-Leaf: Improved VdbeCoverage() macros. A few minor simplifications to generated VDBE code. (user: drh, tags: IN-operator-improvements)
2014-08-04
15:12
[2f724cbac9] Closed-Leaf: Changed my mind: This opcode name changes mere creates unnecessary diff marks between older and newer versions without significantly improving readability. Was: Rename the IsNull opcode to IfNull and rename the NotNull opcode to IfNotNull. (user: drh, tags: deadend)
2014-08-02
21:03
[436e884215] 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. (user: drh, tags: IN-operator-improvements)
20:44
[ba78265429] Remove (newly) incorrect preprocessor check to fix build on WinRT. (user: mistachkin, tags: trunk)
2014-08-01
21:12
[9bc1c730a3] A better comment on the generated code for the NULL-in-RHS-of-IN detection logic. (user: drh, tags: trunk)
21:00
[468e730036] Improved detection and handling of NULL values on the RHS of a IN operator. (user: drh, tags: trunk)
18:00
[c11e55fabb] 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. (user: drh, tags: trunk)
15:51
[7c6fbcfe6e] 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. (user: drh, tags: trunk)
15:34
[e13175d357] Closed-Leaf: 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. (user: drh, tags: IN-operator-improvements)
14:46
[ee0fd6aaf9] Begin making changes to the IN operator in an attempt to make it run faster and to make the code easier to understand. (user: drh, tags: IN-operator-improvements)
01:40
[9abcf2698c] Enhance the PRAGMA integrity_check command to detect UNIQUE and NOT NULL constraint violations. (user: drh, tags: trunk)
2014-07-31
22:59
[e75b26ee35] Refactoring: Change "pIndex->onError!=OE_None" to use a macro: "IsUniqueIndex(pIndex)". Easier to understand that way. (user: drh, tags: trunk)
20:16
[1361450a9d] Omit a pointless OP_Null when processing a value-list RHS of an IN operator where the LHS is a rowid. (user: drh, tags: trunk)
18:54
[1e5489faff] Optimizations to the OS sub-type checking in the Win32 VFS. (user: mistachkin, tags: trunk)
18:14
[0708f9df23] Add a missing call to "test_sqlite3_log" to multiplex.test. (user: dan, tags: trunk)
17:35
[47457b0488] Fix a leaked database handle in pager2.test. (user: dan, tags: trunk)
15:44
[f4cb53651b] 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. (user: drh, tags: trunk)
2014-07-30
23:11
[5360ecb0b8] Re-integrate the recent changes from the 'winMutex' branch back into the Win32 mutex subsystem. (user: mistachkin, tags: trunk)
21:10
[3aad01960f] Add three new static mutexes for use by the application. This is a partial import of changes from the threads branch. (user: drh, tags: trunk)
15:43
[c7303d0139] 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. (user: drh, tags: trunk)
14:57
[fa7912320f] Merge in the CREATE UNIQUE INDEX fix of ticket [9a6daf340df99ba93c53bcf]. (user: drh, tags: apple-osx)
14:44
[5b50a8380b] Merge recent trunk changes, and especially the fix for the CREATE UNIQUE INDEX problem of ticket [9a6daf340df99ba9]. (user: drh, tags: threads)
14:29
[43401ee624] Merge the fix for the CREATE UNIQUE INDEX problem into the sessions branch. (user: drh, tags: sessions)
13:56
[6b785e92f2] 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]. (user: drh, tags: trunk)
11:49
[654c6c658b] Merge all recent trunk changes, and especially the R-Tree IN operator fix of ticket [d2889096e7bdeac]. (user: drh, tags: apple-osx)
2014-07-29
19:54
[ca9868cdae] Enhancements and updates to the Win32 mutex subsystem. (user: mistachkin, tags: trunk)