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65 events for the month beginning 2014-06-01 by user drh
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2014-06-30
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| 20:25 | Merge the latest trunk changes into the threads branch. (check-in: ae23a65e user: drh tags: threads) | |
| 20:02 | Merge the latest trunk enhancements into the sessions branch. (check-in: a5d94eab user: drh tags: sessions) | |
| 19:57 | Merge the latest trunk changes into the apple-osx branch. (check-in: f426876f user: drh tags: apple-osx) | |
| 19:28 | Bump the version number to 3.8.6. (check-in: f925e9ba user: drh tags: trunk) | |
| 19:07 | Attempt to use STAT4 information to estimate the selectivity of WHERE clause terms when using the skip-scan optimization. (check-in: d09ca6d5 user: drh tags: trunk) | |
| 18:58 | • Fixed ticket [b2fa5424]: Incorrect STAT4 samples for WITHOUT ROWID tables plus 5 other changes (artifact: a9c56e5c user: drh) | |
| 18:57 | Fix for ticket [b2fa5424e6fcb15]: Better define the format of the sqlite_stat4 file for WITHOUT ROWID tables and make sure the ANALYZE command generates a file in the appropriate format. Use the sqlite_stat4 data to enable the use of WHERE terms that cover all indexed columns plus some prefix of columns in the primary key. (check-in: bc2de809 user: drh tags: trunk) | |
| 17:07 | Fix the STAT4 information for WITHOUT ROWID tables. (check-in: 5d8628fd user: drh tags: stat4-without-rowid) | |
| 13:56 | Omit non-primary-key columns from the STAT4 samples for WITHOUT ROWID tables. Indexes, both rowid and without-rowid, still hold an exact copy of the index entry. (check-in: de826c31 user: drh tags: stat4-without-rowid) | |
| 13:32 | Generate complete samples for sqlite_stat4 on WITHOUT ROWID tables. Ticket [b2fa5424e6fcb15b5] (check-in: 8cb43edd user: drh tags: stat4-without-rowid) | |
| 13:06 | • New ticket [b2fa5424] Incorrect STAT4 samples for WITHOUT ROWID tables. (artifact: c4cd9e13 user: drh) | |
| 11:14 | Add makefile targets for various diagnostic tools, such as showstat4. Fix harmless compiler warnings in diagnostic tools. (check-in: 6f86d89b user: drh tags: trunk) | |
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2014-06-28
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| 16:06 | Add header comments on new routines. Rework the sqlite3Stat4Column() routine so that is (in theory) able to deal with corrupt samples. (check-in: ef5cdf94 user: drh tags: stat4-skipscan) | |
| 14:28 | Change the VDBE to export the sqlite3MemCompare() routine and thus free where.c from the dependency on vdbeInt.h. (check-in: d186d1ac user: drh tags: stat4-skipscan) | |
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2014-06-27
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| 02:23 | • Fixed ticket [9a8b09f8]: Affinity problem on "x IN (?)" plus 5 other changes (artifact: a198df4d user: drh) ... 1 similar event omitted. | |
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2014-06-24
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| 20:19 | Fix showstat4.c so that it decodes typecodes 8 and 9 correctly. (check-in: 9ca737c0 user: drh tags: trunk) | |
| 00:59 | Add the showstat4.exe utility program for decoding and displaying the content of the sqlite_stat4 table in a database. (check-in: b4d9f605 user: drh tags: trunk) | |
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2014-06-23
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| 23:28 | Add the .fullschema command to the sqlite3.exe utility. This command shows the schema and the content of the sqlite_stat tables, all in one go. Useful when reporting problems with the query planner. (check-in: ebec4892 user: drh tags: trunk) | |
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2014-06-20
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| 13:55 | Improved display of record data in the "NNNbd" output of the showdb.exe utility program. (check-in: f735c249 user: drh tags: trunk) | |
| 01:32 | In the showdb.exe utility, for the "NNNbd" command, also show data fields in addition to header fields on each record decoded. Improvements to formatting. (check-in: b451fe0c user: drh tags: trunk) | |
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2014-06-19
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| 23:38 | Add the ability to decode the headers of individual cells, byte-by-byte, in the "showdb.exe" utility. (check-in: 306b461d user: drh tags: trunk) | |
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2014-06-18
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| 18:10 | Add the "LogEst" and "LogEst.exe" target to the makefiles. (check-in: 7b91b058 user: drh tags: trunk) | |
| 15:24 | Fix a comment on the sqlite3Utf8Read() routine. No changes to code. (check-in: 5e514f6a user: drh tags: trunk) | |
| 15:18 | Merge in all recent changes from trunk, and especially the automatic index enhancements. (check-in: 0e1b7349 user: drh tags: threads) | |
| 15:11 | Prevent an automatic index from taking the place of a declared index. (check-in: 0a52bddd user: drh tags: trunk) | |
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2014-06-17
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| 20:16 | Prevent an automatic index from taking the place of a declared index. (Closed-Leaf check-in: 4ece839d user: drh tags: autoindex-improvements) | |
| 17:00 | Fix a missing space in a "wheretrace" comment. No changes to production code. (check-in: b500f2a0 user: drh tags: trunk) | |
| 16:11 | Add the likely() function for symmetry with unlikely(). The likely(X) function means the same thing as likelihood(X,0.9375). (check-in: 38965484 user: drh tags: trunk) | |
| 15:53 | Improvements to query planning, especially in regards to estimating the cost and benefit of automatic indexes. (check-in: 1272fb89 user: drh tags: trunk) | |
| 15:13 | Small tweaks to the query planner to get it to try harder to use an index for sorting and to avoid using automatic indexes on constant terms. (Leaf check-in: 2d9de154 user: drh tags: branch-3.8.3) | |
| 13:23 | Add the autoindex2.test testing module. (check-in: ffe3fea4 user: drh tags: autoindex-improvements) | |
| 12:33 | A different approach to the autoindex problem that deletes query-planner code rather than adding it. (check-in: f270fb6e user: drh tags: autoindex-improvements) | |
| 09:52 | Simplification to the logic that prevents automatic indexes from being formed on constant expressions. (check-in: 36d67e1d user: drh tags: autoindex-improvements) | |
| 09:00 | Allow an automatic index on a WHERE constraint where the RHS is does not reference another table as long as the RHS is not a constant. (check-in: 58acc2a8 user: drh tags: autoindex-improvements) | |
| 02:46 | Do not attempt to create an automatic index on a constant constraint, as doing so is pointless. (check-in: d6883e96 user: drh tags: autoindex-improvements) | |
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2014-06-16
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| 21:30 | In the "wheretrace" logic (disabled for normal builds) expand the print width of the flags field to be wide enough for all 17 bits. (check-in: 3181d206 user: drh tags: trunk) | |
| 18:35 | Add the SQLITE_UNLINK_AFTER_CLOSE compile-time option. If enabled, the unlink of temporary files on unix is deferred until after the file is closed. (check-in: e43a2f92 user: drh tags: trunk) | |
| 18:17 | Add an application ID for MBTiles tilesets. (check-in: 837f6404 user: drh tags: trunk) | |
| 16:41 | Back out the unix VFS changes that seeks to avoid fstat() calls after an unlink(). That change did not clear the problem on FuseFS. (check-in: 0617e20a user: drh tags: trunk) | |
| 15:01 | Add the ".eqp" dot-command to the ".help" output in the command-line shell. This was accidently omitted when the ".eqp" command was originally implemented for SQLite 3.8.4 (check-in [e6ecf7337658624]). (check-in: b0b4c776 user: drh tags: trunk) | |
| 12:51 | Fix the extension01.test script so that it works on windows. Fix a harmless compiler warning in the fileio extension. (check-in: baf95a19 user: drh tags: trunk) | |
| 12:44 | Add test cases for the fileio extension. (check-in: 86343331 user: drh tags: trunk) | |
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2014-06-13
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| 13:43 | Add the fileio.c loadable extension, that implements readfile() and writefile() SQL functions. (check-in: 0ca104d8 user: drh tags: trunk) | |
| 13:08 | Add an extension that implements compress() and uncompress() SQL functions. (check-in: d5c17d1a user: drh tags: trunk) | |
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2014-06-12
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| 17:10 | Increase the WAL-mode SQLITE_PROTOCOL timeout to 10 seconds. (check-in: 2aeacf81 user: drh tags: trunk) | |
| 15:46 | Simplify the estLog() routine. (check-in: 6c68d758 user: drh tags: trunk) | |
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2014-06-10
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| 20:18 | Proposed change to the fix for ticket [1c69be2dafc28b] such that legacy applications that were exploiting the older buggy behavior in SQLite continue to work. (Leaf check-in: 401a0ca3 user: drh tags: group-by-name-resolution) | |
| 20:11 | • Open ticket [1c69be2d]: Incorrect GROUP BY when input and output columns have the same name plus 4 other changes (artifact: a8a0089d user: drh) | |
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2014-06-09
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| 20:39 | Avoid an unnecessary initialization of the szFile field of unixFile in the unix VFS. (check-in: 6484fb5a user: drh tags: trunk) | |
| 20:34 | • Edit [c41df393c6afbfbf|c41df393]: Mark "Closed". (artifact: 03e5120a user: drh) | |
| 20:24 | Enhance the unix VFS so that it keeps track of the size of unlinked files internally and thus avoids the need to call fstat() on those files, since fstat() does not work reliably on unlinked files on some implementations of FuseFS. (check-in: 10707d35 user: drh tags: trunk) | |
| 20:06 | Enhance the unix VFS so that it keeps track of the size of unlinked files internally and thus avoids the need to call fstat() on those files, since fstat() does not work reliably on unlinked files on some implementations of FuseFS. (Closed-Leaf check-in: c41df393 user: drh tags: omit-fstat-after-unlink) | |
| 13:11 | Modify the %nonassoc directive in lemon so that it generates a run-time error rather than a parsing conflict. This changes is due to a bug report on the mailing list. SQLite does not use the %nonassoc directive in its grammar so this change does not affect SQLite. (check-in: 1925f3a0 user: drh tags: trunk) | |
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2014-06-06
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| 20:49 | Add a test case to ensure that estLog() works for negative numbers. (check-in: 813469d9 user: drh tags: trunk) | |
| 20:20 | Make sure the estLog() routine in the query planner handles negative values correctly (always returning 1). Prior to this change, estLog(-1) would return a large number which could throw off the cost computations in the query planner in obscure circumstances. (check-in: 75437bee user: drh tags: trunk) | |
| 17:09 | Fix an obsolete comment on the whereRangeScanEst() routine. No changes to code. (check-in: b16bf851 user: drh tags: trunk) | |
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2014-06-05
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| 13:22 | Bring the threads branch up-to-date with the 3.8.5 release. (check-in: e4b01676 user: drh tags: threads) | |
| 12:53 | Merge in the 3.8.5 release changes and the FTS integrity-check fix. (check-in: 2dbdfa51 user: drh tags: apple-osx) | |
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2014-06-04
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| 14:06 | Version 3.8.5 (check-in: b1ed4f2a user: drh tags: trunk, release, version-3.8.5) | |
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2014-06-03
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| 20:09 | Merge the 3.8.5 release candidate changes into the sessions branch. (check-in: 09e75d82 user: drh tags: sessions) | |
| 14:42 | Avoid closing a pseudo-table associated with sorting in a co-routine since that pseudo-table might be used again in an outer loop. (check-in: 6d818052 user: drh tags: trunk) | |
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2014-06-02
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| 21:00 | Remove the WHERE_LIKELIHOOD bit, as it does not seem to effect any result. (check-in: 1cbe7a08 user: drh tags: trunk) | |
| 18:24 | Fix a typo in a requirements mark comment in a test script. No changes to code. (check-in: 75ff459b user: drh tags: trunk) | |
| 11:26 | Fix the query planner so that it once again knows that queries without a FROM clause will never return more than one row and hence do not require sorting. (check-in: 9f18b303 user: drh tags: trunk) | |