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50 check-ins occurring around 2ea4a9f75f46eaa9.
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2014-03-24
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| 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 | |
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2014-03-23
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| 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 | |
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2014-03-22
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| 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 | |
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2014-03-21
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| 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 | |
| 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: 45d8cc678d 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: 1f413aca00 user: dan tags: trunk | |
| 18:45 | Merge the OFFSET-on-query-without-FROM fix from trunk. check-in: 71e9ae72c2 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: 179ef81648 user: drh tags: trunk | |
| 15:24 | New test case for block-sorting. check-in: e70cfa28aa user: drh tags: orderby-planning | |
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2014-03-20
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| 20:56 | Merge trunk fixes for "x IN (?)" handling. check-in: eca35871c3 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: d5a1530bdc 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: d8e1f75ddf 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: 01944c53f5 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: 2ea4a9f75f user: drh tags: trunk | |
| 15:14 | Fix harmless compiler warnings. check-in: b1435f26b0 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: 2ff3b25f40 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: e68b427afb 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: eae6dfbe55 user: drh tags: tkt-e39d0325 | |
| 12:17 | Fix an unnecessarily obtuse use of a bitmask flag. check-in: ca31408131 user: drh tags: trunk | |
| 09:42 | Add a test to ensure os_unix.c works with 64KiB OS pages. Closed-Leaf check-in: e3d2be3ba4 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: 6f3a5c24d2 user: dan tags: shm-mapping-fix | |
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2014-03-19
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| 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 | |
| 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: 707ea170b3 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: 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 | |
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2014-03-18
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| 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 | |
| 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: 59d49b7fc4 user: drh tags: orderby-planning | |
| 15:30 | Experiments with the optimization of ORDER BY and GROUP BY clauses. check-in: b150902579 user: drh tags: orderby-planning | |
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2014-03-17
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| 15:43 | Add an experimental multi-threaded capability to vdbesorter.c. check-in: ff0b5c851b user: dan tags: threads | |
| 15:06 | Clean up some obsolete "register" declarations in printf.c. check-in: ecd9d3f945 user: drh tags: trunk | |
| 14:24 | Performance enhancements and size reduction for sqlite3VXPrintf() check-in: eb071eb58c user: drh tags: trunk | |
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2014-03-14
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| 11:46 | Fix a harmless compiler warning that crops up with SQLITE_MAX_MMAP_SIZE=0. check-in: 1277932b7e user: drh tags: trunk | |
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2014-03-13
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| 15:41 | Merge latest trunk changes into this branch. check-in: d17231b63d user: dan tags: threads | |
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2014-03-12
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| 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: 6504aa47a8 user: dan tags: trunk | |