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200 most recent check-ins using file src/os_win.c version e71678ac

2014-05-07
15:32
Fix nolock and immutable so that they work even if READONLY is requested. (Closed-Leaf check-in: e193aced user: drh tags: win32-none)
15:09
Add test cases and documentation for the nolock and immutable query parameters. (check-in: 19d56cba user: drh tags: win32-none)
2014-05-02
17:33
Simplify assert() statements used to verify correct operation of record comparison routines. (check-in: 3300d62d user: drh tags: orderby-planning)
16:22
Failure to extend a temp file for use with mmap() in vdbesort.c is benign. (check-in: d4d39638 user: drh tags: orderby-planning)
15:25
Fix a faulty assert() statement. (check-in: 9196ce40 user: drh tags: orderby-planning)
14:54
Fix a broken test case in fuzz.test. (check-in: faa46935 user: dan tags: trunk)
13:09
Merge latest trunk enhancements and fixes into the orderby-planning branch. (check-in: 84862d3a user: drh tags: orderby-planning)
00:09
Add a comment explaining why WhereLoop cost adjustments are omitted for skip-scan loops. (check-in: 3bc43594 user: drh tags: trunk)
2014-05-01
20:26
Fix an obscure problem to do with temp register allocation that could occur if more than one simple SELECT within a compound SELECT uses a partial sort. (check-in: 427409ae user: dan tags: trunk)
20:24
Add #ifdefs for test coverage. Add a testcase(). (check-in: be2702ce user: drh tags: trunk)
10:19
Update a test case in wal2.test that explicitly corrupts a checksum in the wal file to account for the fact that the first byte of said checksum may initially be 0xFF. (check-in: 2b935bde user: dan tags: trunk)
01:49
Take out the special handling of nolock=true in os_win.c and add it to pager.c, so that it works for all VFSes. Add the pPager->noLock boolean for clarity. (check-in: 725c1c14 user: drh tags: win32-none)
2014-04-30
18:11
Fix a problem in calculating the costs of "OR" scans. (check-in: 9bbca48b user: dan tags: trunk)
15:22
Modify the way the costs of various query plans are estimated. If the user supplies a likelihood() value (or equivalent) on an indexed WHERE constraint, use it to estimate the number of index rows visited. (check-in: 90e36676 user: dan tags: trunk)
15:00
Add text to the header comment of whereLoopAddBtree() describing how the costs of various b-tree loops are estimated. (Closed-Leaf check-in: 05e6e16c user: dan tags: experimental-costs)
14:53
Update a couple of test cases to account for the fact that this branch prefers an index scan and partial sort over a full-table scan and full external sort. (check-in: 9b975bf3 user: dan tags: experimental-costs)
14:47
Fix a couple of out-of-date comments in where.c. (check-in: eefeda32 user: dan tags: experimental-costs)
14:22
Improved rendering of LogEst values corresponding to real values near 0.0 in the tool/logest.c utility program. (check-in: 32910c8c user: drh tags: experimental-costs)
13:19
Fix long-standing typos in comments. (check-in: b9f91317 user: drh tags: experimental-costs)
2014-04-29
19:01
Test that the default values used when sqlite_stat1 data is not available are calculated correctly. Fixes for the same. (check-in: e2d42f90 user: dan tags: experimental-costs)
16:46
Merge trunk changes into this branch. (check-in: d74299f0 user: dan tags: experimental-costs)
16:10
Ignore likelihood() values on indexed IPK lookups. (check-in: 5bb7757a user: dan tags: experimental-costs)
12:01
Fix a test case so that it updates sqlite_stat1 consistently. (check-in: 2dc5a0b5 user: dan tags: experimental-costs)
2014-04-28
20:11
Do not reduce the number of rows scanned at all for "IS NOT NULL" constraints. Fix a bug in calculating the number of rows visited by scans of partial indicies. (check-in: a8ae93f0 user: dan tags: experimental-costs)
19:34
The trunk assumes that an open range constraint on an indexed term (col>?) term matches 1/4 of the indexed rows, and that a closed constraint (col BETWEEN ? AND ?) matches 1/64. Change this branch to do the same. (check-in: 4047ac75 user: dan tags: experimental-costs)
18:02
Merge all recent trunk enhancements and fixes into the sessions branch. (check-in: e158812c user: drh tags: sessions)
17:56
Add the sqlite3_rtree_query_callback() API to the RTree virtual table. (Cherrypick from the sessions branch.) (check-in: af2cbe64 user: drh tags: trunk)
17:51
Add the sqlite3_rtree_query_callback() API to the RTree virtual table. (check-in: 3dca2809 user: drh tags: sessions)
15:11
Update unordered.test to take into account for the fact that SQLite now prefers a full-table scan over a non-covering index scan that visits a large percentage of the table rows. (check-in: 20f468df user: dan tags: experimental-costs)
12:08
Add an extra column to a table in analyze9.test to give the planner a little more reason to select an index. (check-in: 1b95544f user: dan tags: experimental-costs)
10:00
Update test script analyze3.test to account for the fact that SQLite now prefers a full-table scan over a non-covering index scan that visits a large percentage of the table rows. (check-in: 35f46a55 user: dan tags: experimental-costs)
09:35
Modify internal function whereLoopAdjustCost() so that it does not prefer a skip-scan over a regular index scan even if the regular scan uses a subset of the WHERE terms used by the skip-scan. (check-in: 88a5758d user: dan tags: experimental-costs)
08:49
Fix an error in estimating of the number of rows visited by a range scan. (check-in: d491de62 user: dan tags: experimental-costs)
2014-04-26
20:21
Fix an sqlite3_stmt_status() problem caused by recent changs on this branch. (check-in: dee20409 user: dan tags: experimental-costs)
19:23
Update requirements marks to fix typos in the requirements text. No changes to code. (check-in: f5a26365 user: drh tags: trunk)
17:52
Allow the xfer optimization to proceed if the DEFAULT on the very first column of the two tables is different. This is a refinement of the fix for ticket [f67b41381a]. (check-in: 349f4834 user: drh tags: trunk)
14:07
Avoid transfering records between tables unless the default values for all columns are the same. Fix for [f67b41381a]. (check-in: f8c4c495 user: dan tags: trunk)
2014-04-25
20:22
If the user provides likelihood() data for a WHERE clause term used as part of an index key, have the planner use it when calculating the expected number of rows visited by the loop. (check-in: c51efaa5 user: dan tags: experimental-costs)
17:37
Add test cases to ensure correct operation of joins with a virtual table that include DISTINCT and ORDER BY clauses. Verification for ticket [388d01d4bb8f9]. (check-in: 5ada136f user: drh tags: trunk)
16:29
Enhance the sqlite3_rtree_query_info object to report on the number of elements in the priority queue at each level. (Closed-Leaf check-in: f7dad408 user: drh tags: rtree-enhancements)
15:01
Store values loaded from the stat1 table as logarithmic values in memory. (check-in: 1bd74c49 user: dan tags: experimental-costs)
14:42
Make sure ORDER BY clauses on joins that involve virtual tables and that have a DISTINCT clause work correctly. This is a candidate fix for ticket [388d01d4bb8f9]. Test cases for that ticket will be checked in separately. (check-in: 17113812 user: drh tags: trunk)
12:35
When VDBE_PROFILE is enabled, ignore negative opcode times, which sometimes occur, perhaps due to context swaps. (check-in: 4e88042f user: drh tags: trunk)
2014-04-24
20:04
Changes to the way the planner calculates the costs of various table and index scans. Some test cases still failing. (check-in: c5a6ec0a user: dan tags: experimental-costs)
16:25
Improved header comment on the vdbesort.c module. No changes to code. (check-in: bf09ce24 user: drh tags: orderby-planning)
15:06
Reopen the orderby-planning branch and merge in the latest trunk enhancements and fixes. (check-in: 6077ddcd user: drh tags: orderby-planning)
2014-04-23
12:00
Enhancements to the date and time functions so that they optionally support a 5-digit year. Not sure we want to include this in trunk. Saved in a branch for future reference. (Closed-Leaf check-in: 2029a396 user: drh tags: five-digit-year)
2014-04-21
18:13
Fix the generation of sqlite3_rtree_query_info.iRowid and add test cases to verify that it is fixed. (check-in: eba95ead user: drh tags: rtree-enhancements)
18:00
Preliminary changes to support building VSIX packages for Windows 8.0 and Windows Phone 8.0 using Visual Studio 2013. (check-in: 3bf97c81 user: mistachkin tags: vsixWinPhone81)
15:53
Be sure to initialize the sqlite3_rtree_query_info.iRowid field for the leaves of the R-Tree when doing a query callback search. (check-in: 43946938 user: drh tags: rtree-enhancements)
15:21
Fix an off-by-one error in setting the "iLevel" field of the sqlite3_rtree_query_info structure passed into the RTree query callback. (check-in: d708f159 user: drh tags: rtree-enhancements)
13:36
Comment tweaks on the test case for the [b75a9ca6b0] bug fix. (check-in: 65d2544a user: drh tags: trunk)
13:21
Avoid discarding an ORDER BY clause in the case where an identical GROUP BY clauses uses an index to group, but not sort, the rows. Fix for [b75a9ca6b0]. (check-in: de9a490f user: dan tags: trunk)
2014-04-18
22:20
Clean up the proper-subset cost adjustment logic to make it more compact and easier to read and so that full branch test coverage is more easily obtained. (check-in: 9a5d38c7 user: drh tags: trunk)
01:37
Further improvements to the RTREE_DECODE_COORD() method, to take advantage of known processor byte orders when available. This makes the code 3% faster, according to valgrind. Also add test cases to make sure the on-disk representation is correct. (check-in: 6f3e94f4 user: drh tags: rtree-enhancements)
01:14
Merge the latest changes from sessions. (check-in: d9eef5b0 user: drh tags: rtree-enhancements)
01:10
Merge recent trunk changes into sessions. (check-in: 95e77efe user: drh tags: sessions)
00:49
Add the SQLITE_RUNTIME_BYTEORDER compile-time option to force SQLite to check the processor byte-order at run-time. Add additional compile-time byte order checks for ARM, PPC, and SPARC. (check-in: 2c536387 user: drh tags: trunk)
00:08
Preliminary changes to support building VSIX packages for Windows Phone 8.1. (check-in: a1b2f28b user: mistachkin tags: vsixWinPhone81)
00:06
Add the SQLITE_TESTCTRL_BYTEORDER test control to interrogate SQLite's notion of the processor byte order and whether the byte order is known at compile-time or determined at run-time. (check-in: 9c696196 user: drh tags: trunk)
2014-04-17
23:23
Performance optimization on byte-swapping in R-Tree. (check-in: 444084fd user: drh tags: rtree-enhancements)
15:34
More test cases with very long priority queues. (check-in: 71692aa9 user: drh tags: rtree-enhancements)
14:52
Test cases and bug fixes for the sqlite3_rtree_query_callback() mechanism. (check-in: 1ccaaed6 user: drh tags: rtree-enhancements)
13:15
Refactor the constraint checking logic in RTree. The new-style constraint callbacks created by sqlite3_rtree_query_callback() are now hooked up from end to end, though still untested. (check-in: 32a13870 user: drh tags: rtree-enhancements)
2014-04-16
21:02
Performance optimization on nodeGetCell() in R-Tree. (check-in: 5d20ff9e user: drh tags: rtree-enhancements)
17:23
Convert the RTree module query mechanism over to using a priority queue for walking the RTree. (check-in: f26936f7 user: drh tags: rtree-enhancements)
17:15
TCL tests now all pass. (Closed-Leaf check-in: f864bacc user: drh tags: rtree-queue)
14:45
Fix a bug in rowid=? query handling. More problems remain. (check-in: 5b0e6ba4 user: drh tags: rtree-queue)
13:00
Bug fixes to the priority-queue implementation for R-Trees. Improved tracing capability. Some queries work now, but still many problems. (check-in: a439ddd6 user: drh tags: rtree-queue)
2014-04-15
21:06
Initial attempt at getting R-Tree queries to work using a priority queue. This check-in compiles, but R-Trees do not work well. And there are debugging printf()s left in the code. This is an incremental check-in. (check-in: 53688a25 user: drh tags: rtree-queue)
2014-04-14
19:48
Make sure the undocumented sqlite_rename_parent() function does not crash even if it is invoked with NULL arguments. Ticket [264b970c4379fd4b94] (check-in: c6fa8d0d user: drh tags: trunk)
14:43
Fix comments on the rtreenode() and rtreedepth() test function in the R-Tree module. (check-in: ade5b986 user: drh tags: rtree-enhancements)
12:18
Remove over 300 lines of unused code, code that implemented the older Guttman insertion algorithms that are no longer used. (check-in: 3ba5f295 user: drh tags: rtree-enhancements)
2014-04-13
19:28
Remove the unused second argument from sqlite3ExprCachePop(). Add an ALWAYS() on an always-true conditional in sqlite3VdbeResolveLabel(). (check-in: ab23abf3 user: drh tags: trunk)
19:15
Make sure column cache elements are cleared correctly when jumping over code for key generation in a partial index. Fix for ticket [2ea3e9fe6379fc3f6]. (check-in: 3122b836 user: drh tags: trunk)
16:10
Continuing work on the new custom query mechanism for r-tree. (check-in: ca7357e6 user: drh tags: rtree-enhancements)
2014-04-12
17:44
Continuing clean-up of the R-Tree module in preparation for cutting in the new generalized query mechanism. (check-in: 66c858f2 user: drh tags: rtree-enhancements)
2014-04-11
23:14
Add the new interfaces to rtree, though they do not yet work. Add the "show_speedtest1_rtree.tcl" script for showing the test data used for the R-Tree tests of speedtest1. Change speedtest1 to generate better R-Tree test data. (check-in: 0b702759 user: drh tags: rtree-enhancements)
17:41
Add the --verify option to speedtest1. Add verification test cases to the "rtree" testset and a case that uses a custom geometry callback. (check-in: 9d485c42 user: drh tags: rtree-enhancements)
16:14
Update comments in the R-Tree module in preparation for some big changes. Add an "rtree" performance test to speedtest1. (check-in: 20a73ec0 user: drh tags: rtree-enhancements)
2014-04-10
02:24
Modify the OR-clause handling so that it can safely deal with OR-clause with 17 or more terms. Fix for ticket [10fb063b1179be53ea0b53bb]. (check-in: a67b5312 user: drh tags: trunk)
2014-04-04
18:49
Performance improvements when reading large blobs, especially if SQLITE_DIRECT_OVERFLOW_READ is defined. (check-in: 2312eb6a user: drh tags: trunk)
18:20
Merge changes to the query planner that strive to ensure that any index usage that is a proper subset of some other index usage always has a slightly higher cost. (check-in: 683dd379 user: drh tags: trunk)
14:12
Ensure the "PRAGMA journal_mode=WAL" works coming from any other journal_mode with ATTACH-ed databases. (check-in: e54330b4 user: drh tags: trunk)
2014-04-03
16:53
Version 3.8.4.3 (Leaf check-in: a611fa96 user: drh tags: release, version-3.8.4.3, branch-3.8.4)
16:35
Merge all recent changes from trunk, including the fix for the OP_SCopy-vs-OP_Copy problem. (check-in: 9515c834 user: drh tags: sessions)
16:29
Use OP_Copy instead of OP_SCopy when moving results out of a subquery, to prevent the subquery results from changing out from under the outer query. Fix for ticket [98825a79ce1456]. Problem introduced by check-in [1e64dd782a126f48d78]. (check-in: d5513dfa user: drh tags: trunk)
16:18
Increase the version number to 3.8.4.3 (check-in: f05a49b6 user: drh tags: branch-3.8.4)
16:16
Use OP_Copy instead of OP_SCopy when moving results out of a subquery, to prevent the subquery results from changing out from under the outer query. Fix for ticket [98825a79ce1456]. Problem introduced by check-in [1e64dd782a126f48d78]. (check-in: ec6a0624 user: drh tags: branch-3.8.4)
14:31
Fix a typo in the "Synopsis:" comment for the OP_VFilter opcode. (check-in: 48ecdd4a user: drh tags: trunk)
00:32
In the command-line shell, run set writable_schema before running the ".clone" command. (check-in: 9d2ae634 user: drh tags: trunk)
2014-04-01
01:24
Remove an unnecessary conditional, replacing it with an assert(). Improvements to comments. (Closed-Leaf check-in: 834bf1c3 user: drh tags: overflow-pgno-cache)
2014-03-31
23:57
Fix a compiler warning when SQLITE_DIRECT_OVERFLOW_READ is defined. Minor performance enhancement and size reduction. (check-in: 96385dc4 user: drh tags: overflow-pgno-cache)
22:03
Merge in the latest changes and fixes from trunk. (check-in: f6211540 user: drh tags: overflow-pgno-cache)
20:05
Remove an unnecessary conditional. (Closed-Leaf check-in: 7473c4df user: drh tags: query-plan-experiments)
19:49
Also make sure an index that is a proper subset of some other index has a higher cost than that other index. Add test cases. (check-in: b7830d23 user: drh tags: query-plan-experiments)
18:24
Make sure that an index that covers a proper superset of the WHERE clause terms of some other index has a lower cost than the other index. (check-in: ea8b0910 user: drh tags: query-plan-experiments)
13:42
Avoid a (harmless) buffer overread that is possible on an OOM when MEMSYS5 is engaged. (check-in: b3296267 user: drh tags: trunk)
2014-03-29
21:16
Experiments in picking better query plans, especially when the usage of one index is a subset of another. (check-in: 8f869ca7 user: drh tags: query-plan-experiments)
2014-03-28
19:47
Fix a compiler warning and an after-OOM memory leak. (check-in: 58f7ca29 user: drh tags: orderby-planning)
18:35
Merge the latest changes from trunk. (check-in: 3047a25f 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: 27deb6e4 user: drh tags: trunk)
12:56
Fix a harmless compiler warning. (check-in: a4e47150 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: 7fa85eaa 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: 81987c8c 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: 9b4d7226 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: f4ac1bf2 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: b4bd2a06 user: drh tags: trunk)
00:09
Merge the latest trunk changes and the fix for the crash on a corrupt database. (check-in: 0b35346c user: drh tags: orderby-planning)
2014-03-26
19:43
Merge in fixes (including the corrupt-database crash fix) and performance enhancements from trunk. (check-in: fc8ca1a8 user: drh tags: sessions)
18:51
Version 3.8.4.2 (check-in: 02ea1663 user: drh tags: release, version-3.8.4.2, branch-3.8.4)
16:25
Increase the version number to 3.8.4.2. (check-in: 59978a2e user: drh tags: branch-3.8.4)
16:22
Fix a potential buffer overread that could have occurred when searching a corrupt database file. (check-in: db293547 user: drh tags: branch-3.8.4)
15:14
Add an extra test case for the potential buffer overread patched by [28ddecff04]. (check-in: f585f5d7 user: dan tags: trunk)
15:05
Add a test case to verify that the previous change avoids excess buffer overread in sqlite3VdbeRecordCompare(). (check-in: 2b28e8d5 user: drh tags: trunk)
14:51
Earlier detection of corruption in sqlite3VdbeRecordCompare() in order to avoid a potential buffer overread. (check-in: 28ddecff user: drh tags: trunk)
12:02
Add an assert() and a comment to clarify the operation of the vdbeRecordCompareInt() routine. (check-in: 851abdb8 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: 7922809e user: drh tags: trunk)
18:29
Merge enhancements and fixes from trunk. (check-in: e005f2d6 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: 9ab7ffd5 user: drh tags: trunk)
17:07
Fix a problem in the code added by [707ea170b3] causing vdbesort.c to sort unstably. (check-in: d3e640af user: dan tags: orderby-planning)
15:04
Remove the sequence values from sorter records used by ORDER BY as well. (check-in: c3ae3697 user: dan tags: orderby-planning)
14:54
Add an ORDER BY test case to speedtest1.c (check-in: 58812264 user: drh tags: trunk)
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: e6798871 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: 3f90abdd user: dan tags: orderby-planning)
18:08
Avoid unnecessary moving of content between registers during an ORDER BY. (check-in: 4f472acc user: drh tags: orderby-planning)
16:30
Remove unused variables Parse.nColCache and Parse.iColCache. (check-in: 4d7551ce 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: 221f8f94 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: 0b95b7a8 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: db7d62c8 user: dan tags: trunk)
09:34
Remove an unnecessary temporary register allocation. (check-in: 5d506743 user: dan tags: orderby-planning)
02:20
Remove a pointless OP_Once operation in ORDER BY clauses with LIMIT. (check-in: e6c59d23 user: drh tags: orderby-planning)
01:43
Further enhancements to generated VDBE code for ORDER BY. (check-in: e7188fad user: drh tags: orderby-planning)
2014-03-23
18:47
merge fixes from trunk (check-in: faf7f9ca 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: d696cded user: drh tags: orderby-planning)
16:29
Avoid a possible use of an uninitialized variable following an I/O or OOM error. (check-in: 641408a1 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: 9b2838f2 user: drh tags: trunk)
01:52
Increase the version number to 3.8.5. (check-in: 9760879d 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: c36f7461 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: fa06a6fe user: drh tags: trunk)
19:56
Change the names of SRT_DistTable and SRT_Table used by CTE to more meaningful SRT_DistFifo and SRT_Fifo, respectively. Simplify the IgnorableOrderby() macro in the process. (check-in: 45d8cc67 user: drh tags: trunk)
19:27
Avoid leaking memory in an obscure case where the flattener adds an ORDER BY clause to the recursive part of a recursive query. (check-in: 1f413aca user: dan tags: trunk)
18:45
Merge the OFFSET-on-query-without-FROM fix from trunk. (check-in: 71e9ae72 user: drh tags: orderby-planning)
18:16
Fix the OFFSET clause so that it works correctly on queries that lack a FROM clause. Ticket [07d6a0453d4ed8]. (check-in: 179ef816 user: drh tags: trunk)
15:24
New test case for block-sorting. (check-in: e70cfa28 user: drh tags: orderby-planning)
2014-03-20
20:56
Merge trunk fixes for "x IN (?)" handling. (check-in: eca35871 user: drh tags: orderby-planning)
19:04
Remove a testcase() that is now always true due to the "x IN (?)" optimization. Add an ALWAYS() around a conditional in the parser that cannot be false. (check-in: d5a1530b user: drh tags: trunk)
18:56
Only use the direct-overflow-read optimization if all data from the overflow page in question is being read. (check-in: d8e1f75d user: dan tags: overflow-pgno-cache)
18:45
Fix the EXPLAIN indenter in the command-line shell to correctly handle NextIfOpen and PrevIfOpen opcodes. (check-in: 01944c53 user: drh tags: trunk)
17:03
The "x IN (?)" optimization in check-ins [2ff3b25f40] and [e68b427afb] is incorrect, as demonstrated by the in4-5.1 test case in this check-in. The "COLLATE binary" that was being added to the RHS of IN was overriding the implicit collating sequence of the LHS. This change defines the EP_Generic expression node property that blocks all affinity or collating sequence information in the expression subtree and adds that property to the expression taken from RHS of the IN operator. (check-in: 2ea4a9f7 user: drh tags: trunk)
15:14
Fix harmless compiler warnings. (check-in: b1435f26 user: drh tags: trunk)
14:56
Previous check-in is not quite correct. "x IN (?)" is not exactly the same as "x==?" do to collation and affinity issues. The correct converstion should be to "x==(+? COLLATE binary)". The current check-in fixes this problem and provides test cases. Ticket [e39d032577df69] (check-in: 2ff3b25f user: drh tags: trunk)
13:26
Convert expressions of the form "X IN (?)" with exactly one value on the RHS of the IN into equality tests: "X=?". Add test cases to verify that statements work correctly on this corner case. Fix for ticket [e39d032577df6942]. (check-in: e68b427a user: drh tags: trunk)
12:36
One possible fix for the [e39d032577d] problem it to replace the failing assert() with a testcase() as shown here. (Closed-Leaf check-in: eae6dfbe user: drh tags: tkt-e39d0325)
12:17
Fix an unnecessarily obtuse use of a bitmask flag. (check-in: ca314081 user: drh tags: trunk)
09:42
Add a test to ensure os_unix.c works with 64KiB OS pages. (Closed-Leaf check-in: e3d2be3b user: dan tags: shm-mapping-fix)
08:59
Add an experimental fix to 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: 6f3a5c24 user: dan tags: shm-mapping-fix)
2014-03-19
23:42
Merge the vdbesort.c optimization from trunk. (check-in: e4bfffb9 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: 01afbf97 user: drh tags: orderby-planning)
20:01
Avoid some unnecessary calls to sqlite3VdbeRecordUnpack() that were being made when merging data from two or more temp files together in vdbesort.c (check-in: 707ea170 user: dan tags: trunk)
17:41
Make it possible for block-sort to use the OP_SorterOpen sorter in addition to a generic OP_OpenEphemeral. (check-in: 7ce2daaf 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: 62f3a220 user: drh tags: orderby-planning)
15:17
Avoid reusing temporary registers in co-routines when doing block-sorting. (check-in: 463d921b 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: b186d8d1 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: 59742dd4 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: e258df23 user: drh tags: orderby-planning)
18:59
Adjust the query planner to keep track of the number of ORDER BY terms satisfied. Still doesn't do anything with this information. Some tests fail after this check-in, but all failures are believed to be benign. The failures will be addressed at a later stage. (check-in: 59d49b7f user: drh tags: orderby-planning)
15:30
Experiments with the optimization of ORDER BY and GROUP BY clauses. (check-in: b1509025 user: drh tags: orderby-planning)
2014-03-17
15:06
Clean up some obsolete "register" declarations in printf.c. (check-in: ecd9d3f9 user: drh tags: trunk)
14:24
Performance enhancements and size reduction for sqlite3VXPrintf() (check-in: eb071eb5 user: drh tags: trunk)
2014-03-14
11:46
Fix a harmless compiler warning that crops up with SQLITE_MAX_MMAP_SIZE=0. (check-in: 1277932b user: drh tags: trunk)
2014-03-12
19:38
Fix an obscure bug causing sqlite3_close() to fail if there are virtual tables on the disconnect list when it is called. (check-in: 6504aa47 user: dan tags: trunk)
19:20
Changes to FTS to ensure that it does not access the database from within the xConnect method. (check-in: c67a52c3 user: dan tags: trunk)
12:44
Prevent the rtree module from reading sqlite_stat1 data from the wrong database. (check-in: 7ce03c1b user: dan tags: trunk)
10:03
Bump the version number to 3.8.4.1., to conform with trunk. (check-in: 42c9d8fc user: drh tags: sessions)
2014-03-11
23:44
Remove a stray C99-style comment. (check-in: f500e87d user: drh tags: overflow-pgno-cache)
23:40
Combine the various boolean fields of the BtCursor object into a single bit-vector. This allows setting or clearing more than one boolean at a time and makes the overflow-pgno-cache branch faster than trunk on speedtest1. (check-in: 968fec44 user: drh tags: overflow-pgno-cache)
20:33
Enable the b-tree cursor object's overflow page-number cache, which is normally enabled only for incr-blob cursors, for all cursors. (check-in: da591985 user: dan tags: overflow-pgno-cache)
15:27
Version 3.8.4.1 (check-in: 018d317b user: drh tags: trunk, release, version-3.8.4.1)
15:25
Update version number to 3.8.4.1 (check-in: 33f5694f user: drh tags: trunk)
14:44
Forgot to change the VERSION file. (Closed-Leaf check-in: 04caffce user: drh tags: mistake)
09:19
Add a test to see what happens if an rtree constructor encounters an SQLITE_BUSY error. No changes to code. (check-in: 5527e236 user: dan tags: trunk)
01:48
Version 3.8.4 for sessions (plus two minor fixes). (check-in: 917c4108 user: drh tags: sessions)
2014-03-10
20:12
Adjustments to the cost computation for the skip-scan query plan, to take into account the fact that a seek has to occur on each skip. (check-in: 0769eebd user: drh tags: trunk)
18:03
Attempt to work around MSVC's treatment of __LINE__ as a non-constant value in "Edit and Continue" mode by avoiding the use of __LINE__ when SQLITE_VDBE_COVERAGE is not defined. (check-in: 0a5318bc user: drh tags: trunk)
12:20
Version 3.8.4 (check-in: 530a1ee7 user: drh tags: trunk, release, version-3.8.4)
2014-03-08
19:07
Fix a bug causing "SELECT char()" to return SQLITE_NOMEM. (check-in: ba39df9d user: dan tags: trunk)
2014-03-07
14:57
Improved comment on the pager.c PERSIST rollback journal delete logic inside of hasHotJournal(). No changes to code. (check-in: e5b17a9d user: drh tags: trunk)
14:36
Merge the fix for the journal_mode=PERSIST error recovery delay bug. (check-in: bb6a75f4 user: drh tags: sessions)
03:31
Revise change from the previous check-in to clarify the situation when handling open journal files, regardless of journal mode. (check-in: 1c318ef3 user: mistachkin tags: trunk)
02:29
Avoid calling sqlite3OsDelete() on a file that is open, since this causes Windows to run *very* slowly. Comes up on error recovery in journal_mode=PERSIST. (check-in: fdc651e2 user: mistachkin tags: trunk)
2014-03-06
18:16
Do not run corruptH.test in mmap mode. (check-in: c0d54b4e user: dan tags: trunk)
15:01
Fix a harmless compiler warning in the sessions test harness. (check-in: d389e20a user: drh tags: sessions)
14:53
Enhance the test harness for the sessions interface so that it does not use SQLite operations that can encounter an OOM error in places where it is unable to report an OOM error back up to the test script. (check-in: bc0e6610 user: drh tags: sessions)
13:48
Merge the latest 3.8.4 tweaks from trunk. (check-in: 1ed463d9 user: drh tags: sessions)
13:38
Improved EXPLAIN indentation of a loop in the ANALYZE logic for STAT4. Mark the not-found jump of a seek operation in that loop as never taken. (check-in: 0a4200f9 user: drh tags: trunk)
12:36
Remove a branch that is never taken from where.c. (check-in: 4a499722 user: dan tags: trunk)
02:15
Cosmetic change to the shell in-memory database warning to skip coloring the trailing period. (check-in: c87d8e07 user: mistachkin tags: trunk)
01:56
Fix some incorrect comments and typos in comments. Add testcase() macros to some of the new record comparison code. (check-in: b83cfe89 user: drh tags: trunk)
00:30
Better loadable extension handling in the Win32 VFS when compiled for Cygwin. (check-in: 29b0a4f1 user: mistachkin tags: trunk)