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50 check-ins occurring around bc8bbf3207288d16.
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2014-09-25
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| 20:43 | Add streaming version of sqlite3changeset_concat(). (check-in: 88eb6656bd user: dan tags: sessions) | |
| 17:42 | Minor code reformatting and comment change, to improve clarity. No logic changes. (check-in: baeb72a356 user: drh tags: trunk) | |
| 14:54 | Add streaming version of sqlite3changeset_invert() to sessions module. (check-in: 8ded6a4679 user: dan tags: sessions) | |
| 13:17 | Simplifications to the SQL function and aggregate calling procedures. (check-in: 3467049a17 user: drh tags: trunk) | |
| 12:31 | Simplification to the random rowid picking logic that begins running when the maximum possible rowid has already been used. (check-in: 1330c72e17 user: drh tags: trunk) | |
| 11:08 | Still more performance enhancements to the LIKE and GLOB operators. (check-in: 6c8924cacc user: drh tags: trunk) | |
| 03:51 | More performance optimization for the LIKE and GLOB operators. (check-in: 5ab1023d6c user: drh tags: trunk) | |
| 02:44 | Change that might allow SQLite to build and work using the EBCDIC character set. (check-in: ef30e0352b user: drh tags: trunk) | |
| 00:56 | Size reduction and performance improvement in the LIKE and GLOB operators. (check-in: b2c89ef49c user: drh tags: trunk) | |
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2014-09-24
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| 19:47 | Have each open database allocate its pTmpSpace when the first write cursor is opened, rather than on each insert or delete, for a small space savings and performance boost. (check-in: 99323552c0 user: drh tags: trunk) | |
| 18:31 | Small performance and size optimization for btreeUnlockIfUnused(). (check-in: 13c746f85d user: drh tags: trunk) | |
| 17:13 | Add streaming version of sqlite3changeset_apply(). Tests and fixes for the same and sqlite3changeset_start_str(). (check-in: b917fc1468 user: dan tags: sessions) | |
| 13:20 | Do not allow parameters in a DEFAULT clause of a CREATE TABLE statement. Ticket [78c0c8c3c9f7c1]. (check-in: 1ad2bc1ed4 user: drh tags: trunk) | |
| 04:38 | Experiment using linear interpolation, instead of a strict binary search, when looking for integer-keyed rows on a single b-tree page. The experiment was not successful. The number of key comparisons is reduced by about 15%, but the added complexity of the search logic causes an overall reduction in performance. The patch is saved for historical reference only. (Closed-Leaf check-in: c705cf856d user: drh tags: linear-interpolation) | |
| 02:05 | Have the clearCell() routine return the cell size to the caller, rather than have the caller make a separate call to cellSizePtr(). (check-in: f21d217583 user: drh tags: trunk) | |
| 01:23 | Shorten all lines of source code in btree.c to at most 80 characters. No logical changes. (check-in: 5dd41cdbfe user: drh tags: trunk) | |
| 00:59 | Add the MemPage.noPayload boolean and use it to help cellSizePtr() and btreeParseCellPtr() run faster. (check-in: 8e3375313e user: drh tags: trunk) | |
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2014-09-23
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| 23:12 | Remove an unused C-preprocessor macro. No functional changes to the code. (check-in: f480582cca user: drh tags: trunk) | |
| 22:36 | Avoid calling btreeParseCellPtr() from within fillInCell() since most of what btreeParseCellPtr() computes is ignored by fillInCell(). Instead, have fillInCell() compute the values it needs inline. Performance improvement. (check-in: 4147f6671e user: drh tags: trunk) | |
| 21:25 | Simplify the CellInfo structure for a size reduction and performance improvement. (check-in: bf59df66b3 user: drh tags: trunk) | |
| 20:39 | Begin adding 'streaming' APIs to sessions module. This is a work in progress. (check-in: 3c7d3d950b user: dan tags: sessions) | |
| 18:30 | Add the "multiplex_truncate" PRAGMA to the multiplexor extension, for querying and setting the truncate flag on a database connection. (check-in: d2962a5f38 user: drh tags: trunk) | |
| 01:40 | Adjust skip-scan cost estimates slightly so that a full table scan is preferred over a skip-scan to a column with only two distinct values. (check-in: ae9a42b268 user: drh tags: trunk) | |
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2014-09-22
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| 20:38 | Fix to payload size overflow detection in the cellSizePtr() change of the previous check-in. (check-in: 7609744014 user: drh tags: trunk) | |
| 19:51 | Size reduction and substantial performance increase for cellSizePtr(). (check-in: bc8bbf3207 user: drh tags: trunk) | |
| 14:30 | Tune the query planner to be more aggressive about using automatic indexes on views and subqueries for which there is not opportunity to declare a persistent schema index. (check-in: 41de1643bf user: drh tags: trunk) | |
| 03:22 | Disable shared memory operations using the unix-nolock VFS. (check-in: 10a6e51049 user: drh tags: trunk) | |
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2014-09-21
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| 23:08 | Merge in all recent changes from trunk. (check-in: 3967ebe83e user: drh tags: apple-osx) | |
| 22:49 | Merge all recent trunk changes into the sessions branch. (check-in: 6406b77f2c user: drh tags: sessions) | |
| 22:31 | Correctly handle an ORDER BY clause on an outer query when applying the compound-subquery flattening optimization. Ticket [d11a6e908f]. Also add the SQLITE_ENABLE_SELECTTRACE option for additional debugging and analysis information about select statement processing. (check-in: d5880abd63 user: drh tags: trunk) | |
| 20:31 | Add test cases for ticket [d11a6e908f]. (Closed-Leaf check-in: 9683e001ed user: drh tags: select-trace) | |
| 17:51 | Add the "showauth" extension in ext/misc. (check-in: 28d52c1c38 user: drh tags: select-trace) | |
| 00:27 | Improved ".selecttrace" output. (check-in: c0b61f7092 user: drh tags: select-trace) | |
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2014-09-20
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| 20:38 | Candidate fix for [d11a6e908f]. (check-in: 89398880bc user: dan tags: select-trace) | |
| 20:24 | Fix the SELECTTRACE_ENABLE macro so that it doesn't cause problems for testfixture. Add new SELECTTRACE() calls. (check-in: f1ba68f131 user: drh tags: select-trace) | |
| 18:18 | Enable SELECT query planning tracing when compiled with SQLITE_ENABLE_SELECTTRACE and either SQLITE_DEBUG or SQLITE_TEST. (check-in: cbe0cf9ddf user: drh tags: select-trace) | |
| 00:35 | Fix the usage of the _GNU_SOURCE and _BSD_SOURCE macros in the main internal header file, sqliteInt.h. Set HAVE_STRCHRNUL to 1 by default on Linux only. (check-in: 59e2c9df02 user: drh tags: trunk) | |
| 00:29 | Only enable HAVE_STRCHRNUL by default on linux, as that is the only place it appears to work by default. (Closed-Leaf check-in: 0fac2c045f user: drh tags: sqliteIntMacros) | |
| 00:02 | Revise macro usage in 'sqliteInt.h'. (check-in: 35db3e2f35 user: mistachkin tags: sqliteIntMacros) | |
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2014-09-19
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| 22:44 | Simplify two conditionals and add testcase() macros to the affinity transform logic in the comparison operators. (check-in: 544664cadf user: drh tags: trunk) | |
| 22:30 | Recognize the invariant that a Mem object cannot be MEM_Dyn and have a non-zero szMalloc at the same time. Enforce this with assert()s and exploit it in the sqlite3VdbeMemClearAndResize() routine for a performance increase. (check-in: 3b21cf2b28 user: drh tags: trunk) | |
| 22:01 | Tighten the conditions under which applyNumericAffinity() be called and add assert() statements to prove that it is never called otherwise. (check-in: e996ca32cb user: drh tags: trunk) | |
| 20:13 | Fix the affinity on inserts into the ANALYZE tables. Change the affinity characters to be upper case, to make the P5 parameter of comparison operators easier to read. (check-in: 3f3ca76aea user: drh tags: trunk) | |
| 19:43 | Do not attempt to extend the temp file if VFS version 3 is not supported and hence memory mapped I/O is unavailable. (check-in: 3ab20ba14f user: drh tags: trunk) | |
| 19:00 | Make the "nolock" VFS on unix a version-3 VFS so that the sorter can use memory-mapped I/O. (check-in: 3db78d6100 user: drh tags: trunk) | |
| 18:08 | Add further tests to ota5.test. Add "ota.test", for running all ota tests. (check-in: 95ffdaa542 user: dan tags: ota-update) | |
| 16:56 | Remove a local variable from the OP_Column implementation, resulting in a modest size reduction and a performance increase. (check-in: 6199760d13 user: drh tags: trunk) | |
| 16:13 | Small size reduction and performance increase for releaseMemArray(). (check-in: 24cd32d681 user: drh tags: trunk) | |
| 16:02 | Updates to comments. No code changes. (check-in: 9b42c3da6b user: drh tags: trunk) | |
| 15:28 | The OP_Column opcode runs faster and is smaller by manually in-lining the code that persists string values in the output register. (check-in: 36b613ccf0 user: drh tags: trunk) | |