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50 descendants of [e258df236b]

2014-03-28
18:35
Merge the latest changes from trunk. check-in: 3047a25f1c user: drh tags: orderby-planning
14:41
Disable the wal64k.test script for non-unix systems since it depends on unix-only features. check-in: 27deb6e49b user: drh tags: trunk
12:56
Fix a harmless compiler warning. check-in: a4e47150f3 user: drh tags: trunk
03:12
Enhance the sqlite3VdbeRecordCompare() routines so that if they encounter database corruption, they will set the UnpackedRecord.isCorrupt field and return 0. The sqlite3BtreeMovetoUnpacked() routine detects this and returns SQLITE_CORRUPT, causing the corruption to be reported back to the top-level. check-in: 7fa85eaaaf user: drh tags: trunk
2014-03-27
19:25
Instead of allocating a single large buffer at the beginning of each sort operation, start with a small buffer and extend it using realloc() as required. check-in: 81987c8ceb user: dan tags: orderby-planning
18:36
Minor cleanup of the code in the query planner that computes the costs estimates for the various plans. There are no changes to the costs at this time. But the code is slightly more readable now and that might facilitate future enhancements. check-in: 9b4d7226bc user: drh tags: trunk
17:23
Use xFetch() to access temporary files in vdbesort.c. Use a single large allocation instead of many small allocations when accumulating records in vdbesort.c. This is an interim commit - it allocates a buffer the size of the page-cache every time data is sorted. check-in: f4ac1bf28c user: dan tags: orderby-planning
14:05
Enhance the logest.c utility with new operators: "dup", "inv", "log", and "nlogn". Provide help on an invalid input. check-in: b4bd2a062c user: drh tags: trunk
00:09
Merge the latest trunk changes and the fix for the crash on a corrupt database. check-in: 0b35346c32 user: drh tags: orderby-planning
2014-03-26
19:45
Merge from trunk the fix for the crash on a corrupt database. check-in: 8cb2b02baa user: drh tags: threads
19:43
Merge in fixes (including the corrupt-database crash fix) and performance enhancements from trunk. check-in: fc8ca1a87e user: drh tags: sessions
15:14
Add an extra test case for the potential buffer overread patched by [28ddecff04]. check-in: f585f5d7a0 user: dan tags: trunk
15:05
Add a test case to verify that the previous change avoids excess buffer overread in sqlite3VdbeRecordCompare(). check-in: 2b28e8d582 user: drh tags: trunk
14:51
Earlier detection of corruption in sqlite3VdbeRecordCompare() in order to avoid a potential buffer overread. check-in: 28ddecff04 user: drh tags: trunk
12:02
Add an assert() and a comment to clarify the operation of the vdbeRecordCompareInt() routine. check-in: 851abdb8fd user: drh tags: trunk
2014-03-25
20:28
Adjust the repeat counts on several tests in speedtest1 so that the relative time spent on the test is roughly the same regardless of --size. check-in: 7922809ee0 user: drh tags: trunk
18:29
Merge enhancements and fixes from trunk. check-in: e005f2d6dd user: drh tags: orderby-planning
17:45
Add another performance test case to speedtest1. This case is another ORDER BY test but this time without LIMIT. check-in: 9ab7ffd592 user: drh tags: trunk
17:07
Fix a problem in the code added by [707ea170b3] causing vdbesort.c to sort unstably. check-in: d3e640afe6 user: dan tags: orderby-planning
15:04
Remove the sequence values from sorter records used by ORDER BY as well. check-in: c3ae369783 user: dan tags: orderby-planning
14:54
Add an ORDER BY test case to speedtest1.c check-in: 588122641e user: drh tags: trunk
14:12
Enable four sorting threads by default in the command-line shell. check-in: 1cab83577c user: drh tags: threads
13:17
Merge all fixes and enhancements from trunk. check-in: b415dfb6cb user: drh tags: threads
11:00
Detect when a VdbeCursor is still pointing at a valid row but that row has moved, and invalidated the return from prior sqlite3BtreeDataFetch() or sqlite3BtreeKeyFetch() calls. check-in: e6798871ce user: drh tags: trunk
2014-03-24
20:19
Omit the sequence value from sorter records used by GROUP BY queries that cannot use an index. check-in: 3f90abddc3 user: dan tags: orderby-planning
18:08
Avoid unnecessary moving of content between registers during an ORDER BY. check-in: 4f472accf0 user: drh tags: orderby-planning
16:30
Remove unused variables Parse.nColCache and Parse.iColCache. check-in: 4d7551ce46 user: dan tags: trunk
15:00
Fix arithmetic operators so that they do not change the affinity of their input operands. Ticket [a8a0d2996a]. check-in: 221f8f9447 user: drh tags: trunk
12:33
Cancel column-cache entries that are involved in a comparison operator since the comparison might have forced an affinity change. Originally proposed as a fix for ticket [a8a0d2996a], but later determined to be incorrect. Closed-Leaf check-in: 0b95b7a874 user: drh tags: tkt-a8a0d2996a
11:23
Avoid attempting to mmap memory from an offset that is not a multiple of the system page size on systems with page sizes larger than 32KB. check-in: db7d62c8d5 user: dan tags: trunk
09:34
Remove an unnecessary temporary register allocation. check-in: 5d506743f5 user: dan tags: orderby-planning
02:20
Remove a pointless OP_Once operation in ORDER BY clauses with LIMIT. check-in: e6c59d2331 user: drh tags: orderby-planning
01:43
Further enhancements to generated VDBE code for ORDER BY. check-in: e7188fad87 user: drh tags: orderby-planning
2014-03-23
18:47
merge fixes from trunk check-in: faf7f9caf5 user: drh tags: orderby-planning
17:45
Use only a single OP_MakeRecord instead of two when constructing entries to go onto a sorter. check-in: d696cdedac user: drh tags: orderby-planning
16:29
Avoid a possible use of an uninitialized variable following an I/O or OOM error. check-in: 641408a139 user: drh tags: trunk
2014-03-22
02:19
Clear the sort-order flags on the KeyInfo object associated with the OP_Compare/OP_Jump of the block-sort logic, in order to make the OP_Jump fully testable. check-in: 9b2838f23e user: drh tags: trunk
01:52
Increase the version number to 3.8.5. check-in: 9760879d08 user: drh tags: trunk
00:27
Fix the ORDER BY optimization logic so that it will do a block-sort on a partial DESC ORDER BY. This enhancement uncovered a memory leak in pushUntoSorter() which is also fixed. check-in: c36f74611c user: drh tags: trunk
2014-03-21
20:58
Add the ability to use indices for the first few terms of an ORDER BY clause, then sort in batches to handle the later terms. check-in: fa06a6fed9 user: drh tags: trunk
18:45
Merge the OFFSET-on-query-without-FROM fix from trunk. check-in: 71e9ae72c2 user: drh tags: orderby-planning
15:24
New test case for block-sorting. check-in: e70cfa28aa user: drh tags: orderby-planning
2014-03-20
20:56
Merge trunk fixes for "x IN (?)" handling. check-in: eca35871c3 user: drh tags: orderby-planning
2014-03-19
23:42
Merge the vdbesort.c optimization from trunk. check-in: e4bfffb988 user: drh tags: orderby-planning
23:24
Fix query planner weights associated with choosing block-sorting. Fix block sorting of tables with collating functions. Fix various test cases. All "veryquick" tests are now passing, though more tests need to be added. check-in: 01afbf97c0 user: drh tags: orderby-planning
17:41
Make it possible for block-sort to use the OP_SorterOpen sorter in addition to a generic OP_OpenEphemeral. check-in: 7ce2daafd3 user: drh tags: orderby-planning
16:56
Fix a problem in the block-sort logic that can arise if the VDBE opcode array is resized while the block-sort logic is being coded. "make test" now runs to completion, though there are still 17 failures. check-in: 62f3a22050 user: drh tags: orderby-planning
15:17
Avoid reusing temporary registers in co-routines when doing block-sorting. check-in: 463d921b51 user: drh tags: orderby-planning
14:30
Make sure the where.c query planner never reports that the number of ORDER BY terms that are satisfied by indices is negative. check-in: b186d8d15a user: drh tags: orderby-planning
14:10
First attempt at getting block-sort to work. This is an incremental check-in. There are many problems still to be worked out. check-in: 59742dd4c5 user: drh tags: orderby-planning
2014-03-18
20:33
Make the partial-ORDER-BY information in the query planner available to the SELECT code generator. Still doesn't make a difference in the generated code. check-in: e258df236b user: drh tags: orderby-planning