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30 ancestors of d95d0313c447f5baeabdb17284d8606331ab7d49
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2014-10-24
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| 19:28 | Enhance the automatic index logic so that it creates a partial index when doing so gives the same answer for less work. UPDATE: This change introduced a bug described by ticket [2326c258d02ead33]. (check-in: d95d0313 user: drh tags: trunk) | |
| 15:26 | Honor a high likelihood() on range constraints. (check-in: 401235ed user: drh tags: trunk) | |
| 14:32 | Get the likelihood() functions working on operators like BETWEEN that create virtual terms in the WHERE-clause analysis. (check-in: 03d0498d user: drh tags: trunk) | |
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2014-10-23
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| 01:01 | Implement sqlite3_create_collation() by invoking sqlite3_create_collation_v2() with a NULL destructor argument. This saves a little space. (check-in: 9762ad06 user: drh tags: trunk) | |
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2014-10-22
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| 20:07 | Disable the use of strchrnul() unless specifically enabled by compile-time options. (check-in: e580470d user: drh tags: trunk) | |
| 19:57 | Change the 0x800 bit of SQLITE_TESTCTRL_OPTIMIZATIONS so that it disables the loading of STAT3 and STAT4 content, not just the using of that content. Change the internal name of that bit to SQLITE_Stat34. (check-in: ca3b00c4 user: drh tags: trunk) | |
| 15:27 | Take steps to avoid misestimating range query costs based on STAT4 data due to the roundoff error of converting from integers to LogEst and back to integers. (check-in: 3c933bf9 user: drh tags: trunk) | |
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2014-10-21
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| 21:56 | Call fsync() right after ftruncate() when in journal_mode=TRUNCATE and when synchronous=FULL in order to ensure that transactions are durable across a power loss that happens moments after the commit. Proposed fix for https://bugzilla.mozilla.org/show_bug.cgi?id=1072773. (check-in: 3e922208 user: drh tags: trunk) | |
| 18:16 | Further tuning of the cost estimates for skip-scan loops, especially for cases when skip-scan loops are in competition with regular loops. (check-in: a27861c2 user: drh tags: trunk) | |
| 16:01 | Add WHERETRACE debugging output to the whereLoopAdjustCost() routine. (check-in: ec1e942f user: drh tags: trunk) | |
| 01:05 | If a skip-scan is a proper subset of some other scan, then adjust the cost of the skip-scan upward so that it is more costly than the other scan. Such a cost imbalance can arise under STAT4 because of difficulties in getting an accurate estimate for skip-scans. (check-in: f4b22a26 user: drh tags: trunk) | |
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2014-10-17
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| 21:35 | Fix a (probably harmless) bug in the CSV output mode of the command-line shell. (check-in: 19fe4a0a user: drh tags: trunk) | |
| 11:24 | Version 3.8.7 (check-in: e4ab094f user: drh tags: trunk, release, version-3.8.7) | |
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2014-10-16
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| 21:39 | Work around MSVC not being able to deduce that a local variable was initialized in a called function. (check-in: 06c576c1 user: mistachkin tags: trunk) | |
| 18:34 | Changes to work around Win32 and MSVCRT APIs that are not present on Windows CE 200x. (check-in: 1418c006 user: mistachkin tags: trunk) | |
| 11:45 | Update the vdbe-compress.tcl script to account for expressions of the form (123>var), where "var" should be replaced with a reference to a union member. (check-in: 640345d8 user: dan tags: trunk) | |
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2014-10-15
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| 15:28 | Update releasetest.tcl so that x86-64 runs a superset of the x86 tests. (check-in: 3c1e70f4 user: dan tags: trunk) | |
| 14:45 | Fix a problem causing lock5.test to fail in mmap-mode. (check-in: b3e7b446 user: dan tags: trunk) | |
| 11:55 | Add a four-byte prefix to the BtShared.pTmpSpace buffer to avoid reading before the beginning of an allocation. (check-in: 9386bfca user: drh tags: trunk) | |
| 11:31 | Rearrange an expression in vdbemem.c to avoid a (harmless) reference to a possibly unitialized variable. (check-in: 4a7b3fa0 user: dan tags: trunk) | |
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2014-10-14
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| 20:25 | Make sure new sqlite3_vtab objects created by the xCreate() virtual table method are initialized by the system, in accordance with the documentation. (check-in: eab82330 user: drh tags: trunk) | |
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2014-10-13
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| 23:39 | Optimize a database corruption test inside of the OP_Column opcode. (check-in: 005e5b38 user: drh tags: trunk) | |
| 20:12 | Use the padding word in the Mem object as temporary storage for serial_type value in OP_Record, and thus avoid a redundant computation of the serial_type for each column. (check-in: 4b3b65ee user: drh tags: trunk) | |
| 17:42 | Three small optimizations to vdbeaux.c. (check-in: 04892f8b user: drh tags: trunk) | |
| 16:02 | Reduce the CPU load imposed by sqlit3VdbeCursorMoveto() by factoring out some of its functions and by avoiding unnecessary calls. (check-in: c2799aec user: drh tags: trunk) | |
| 13:00 | Remove the OPFLAG_CLEARCACHE flag from OP_Column. In its place, change the P3 parameter of OP_SorterData to be the index of the pseudo-table cursor whose record header cache is to be cleared. This gives a small size reduction and performance increase. (check-in: 20062f49 user: drh tags: trunk) | |
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2014-10-12
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| 22:37 | Remove the VdbeCursor.lastRowid cache of the current rowid, since maintaining the correct cache value uses more CPU cycles than just recomputing the rowid on the occasions when it is actually needed. Replace it with the VdbeCursor.aOffset field which used to be computed from VdbeCursor.aType when needed. Saves 100 bytes of code space and runs 0.2% faster. (check-in: 91384a7d user: drh tags: trunk) | |
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2014-10-11
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| 23:31 | Performance optimization and very slight size reduction for OP_Column. (check-in: 869c30e4 user: drh tags: trunk) | |
| 17:22 | Simplification to the insertCell() routine in btree.c, resulting in a performance boost and a very small size decrease. It turns out that the extra work involved in sometimes avoiding an memcpy() of the first four bytes of a record takes more time than just unconditionally copying those four bytes. (check-in: 66de1558 user: drh tags: trunk) | |
| 10:52 | Require the SQLITE_ENABLE_RTREE compile-time option in speedtest1.c in order to enable the R-Tree tests. (check-in: 5d29a033 user: drh tags: trunk) | |
| 02:12 | Make sure that a GROUP BY that also implements an ORDER BY scans the table in the correct order. Fix for ticket [ba7cbfaedc7e6]. (check-in: 7a32fdfd user: drh tags: trunk) | |