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100 ancestors of [114dcf33]
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2014-07-24
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| 23:23 | Improve the performance of the ANALYZE command by taking advantage of UNIQUE constraints on indices. check-in: 114dcf33 user: drh tags: trunk | |
| 22:41 | Fix a bug in the whereRangeSkipScanEst() procedure (added by check-in [d09ca6d5efad3e4cfa]) where it fails to consider the possibility of a ROWID column when computing the affinity of a table column. check-in: 6aea2258 user: drh tags: trunk | |
| 20:25 | Avoid trying to allocation zero bytes when analyzing a unique non-null index. Closed-Leaf check-in: 85e2bade user: drh tags: faster-analyze | |
| 19:54 | Avoid change tests when analyzing single-column unique indexes after getting past the initial NULL entries. check-in: 4690e99c user: drh tags: faster-analyze | |
| 12:39 | Add the readfile(FILENAME) and writefile(FILENAME,CONTENT) SQL functions to the command-line shell. check-in: fb1048cb user: drh tags: trunk | |
| 12:19 | Add support for hexadecimal integer literals in the parser. check-in: f8f79f28 user: drh tags: trunk | |
| 12:09 | In the command-line shell, in CSV output mode, terminate rows with CRNL but do not expand NL characters in data into CRNL. Provide the extra -newline command-line option and the extra argument to .separator to designate an alternative newline character sequence for CSV output. check-in: 16c8ce10 user: drh tags: trunk | |
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2014-07-23
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| 23:57 | Add experimental "costmult" logic. Only enabled when compiled with -DSQLITE_ENABLE_COSTMULT. check-in: 729ece40 user: drh tags: trunk | |
| 19:37 | Ugh. Consecutive UNIQUE index entries are only distinct if the index is on NOT NULL columns. So the previous version was not quite right. This check-in fixes the problem. check-in: 30033f96 user: drh tags: faster-analyze | |
| 19:04 | Enhancements to the hex literal tests. Closed-Leaf check-in: a3cc027f user: mistachkin tags: hex-literal | |
| 18:36 | Improve the performance of the ANALYZE command by taking advantage of the fact that every row of a UNIQUE index is distinct. check-in: 3e1e79e1 user: drh tags: faster-analyze | |
| 15:51 | Updated documentation on sqlite3_temp_directory. No changes to code. check-in: e6225a7b user: drh tags: trunk | |
| 14:52 | Remove a surplus function prototype. #ifdef code that is not used when hex integers are omitted at compile time. check-in: a5b383e0 user: drh tags: hex-literal | |
| 13:40 | Change the hex literal processing so that only the SQL parser understands hex literals. Casting and coercing string literals into numeric values does not understand hexadecimal integers. This preserves backwards compatibility. Also: Throw an error on any hex literal that is too big to fit into 64 bits. check-in: 6c6f0de5 user: drh tags: hex-literal | |
| 02:07 | Casting hex literals directly from string to float always results in a positive number. check-in: 4b86ccdf user: drh tags: hex-literal | |
| 01:59 | Reformatting a few test cases for clarity. check-in: 7e1bbacb user: drh tags: hex-literal | |
| 01:56 | Test cases for hex literals. check-in: 19054339 user: drh tags: hex-literal | |
| 01:26 | Add support for parsing C-style hexadecimal literals. check-in: 34a1f38b user: drh tags: hex-literal | |
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2014-07-22
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| 22:46 | When running ANALYZE, it is not necessary to check the right-most key column for changes since that column will always change if none of the previous columns have. check-in: 48f40861 user: drh tags: trunk | |
| 20:02 | Add the OP_ReopenIdx opcode that works like OP_OpenRead except that it becomes a no-op if the cursor is already open on the same index. Update the OR-optimization logic to make use of OP_ReopenIdx in order to avoid unnecessary cursor open requests sent to the B-Tree layer. check-in: 77f412ca user: drh tags: trunk | |
| 19:14 | The optimization of check-in [b67a6e33f2] does not work (it generates incorrect VDBE code) if an OR term is AND-ed with a constant expression. So back that optimization out and add a test case to make sure it does not get added back in. check-in: eed754fe user: drh tags: trunk | |
| 16:00 | Fix the index name for the shadow tables in the spellfix1 extension so that multiple instances of the spellfix1 virtual table can each have their own index. check-in: 438c348a user: drh tags: trunk | |
| 15:33 | Correction: The maximum SQLITE_MAX_ATTACHED value to avoid overflowing a signed 8-bit integer is 125, not 127. check-in: 48e37802 user: drh tags: trunk | |
| 14:58 | Enhance the sqlite_stat1.stat parsing to allow additional text parameters at the end. Unrecognized parameters are silently ignored. check-in: ca2a5a2c user: drh tags: trunk | |
| 14:42 | Expire prepared statements after running ANALYZE. check-in: b083a961 user: drh tags: trunk | |
| 12:05 | Enhance the comment on whereLoopAddBtree(). No changes to code. check-in: b22dd165 user: drh tags: trunk | |
| 00:40 | For the OR-optimization, avoid generating OP_OpenRead opcodes that reopen exactly the same index. check-in: b67a6e33 user: drh tags: trunk | |
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2014-07-21
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| 20:07 | Limit the maximum SQLITE_MAX_ATTACHED to 127, since a signed character is sometimes used to store the database index. check-in: f1c76c7c user: drh tags: trunk | |
| 15:44 | Allow the SQLITE_MAX_ATTACHED compile-time option to be larger than 62. The default limit on the number of attached databases remains 10. check-in: 1a817ae2 user: drh tags: trunk | |
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2014-07-19
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| 17:57 | Update the sqlite3_stmt_busy() function so that it correctly returns true for "ROLLBACK" statements that have been stepped but not yet reset. check-in: 61cee3c0 user: dan tags: trunk | |
| 17:49 | Fix harmless compiler warnings in the showdb and showwal tools and in the unicode tokenizer of FTS3. check-in: 574cc8eb user: drh tags: trunk | |
| 15:44 | Fix some harmess compiler warnings in the FTS3 Unicode module. Closed-Leaf check-in: c01caea5 user: mistachkin tags: toolWarnings | |
| 15:40 | Fix warnings related to having a 64-bit size_t. check-in: 29ac9336 user: mistachkin tags: toolWarnings | |
| 15:30 | Fix warnings caused by the previous commit. check-in: 89634a41 user: mistachkin tags: toolWarnings | |
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2014-07-18
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| 21:16 | Fix harmless compiler warnings for MSVC in the showdb/showwal command line tools. check-in: 6dc7b2f1 user: mistachkin tags: toolWarnings | |
| 21:02 | Update clean targets with the recently added command-line tools. check-in: 2beefa68 user: mistachkin tags: trunk | |
| 19:06 | Improved documentation for checkpoints and the busy handler. No changes to code. check-in: ca92c024 user: drh tags: trunk | |
| 17:39 | SQLite has long accepted some unadvertised and non-standard join syntax. Add a test to ensure that future versions continue to accept this non-standard syntax, to avoid breaking legacy applications that use the undefined syntax. check-in: 824dde7f user: drh tags: trunk | |
| 14:43 | Improvements to the ".fullschema" command in the command-line shell. check-in: fa80c64c user: drh tags: trunk | |
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2014-07-07
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| 18:03 | Fix harmless compiler warnings in the fts3view utility program that can occur with MSVC. check-in: 1cec1e03 user: mistachkin tags: trunk | |
| 17:57 | Add the fts3view utility program to the MSVC makefile. check-in: b04751bd user: mistachkin tags: trunk | |
| 16:07 | Fix a division-by-zero error in the fts3view utility program. Add the fts3view utility program to the "main.mk" makefile. check-in: 64f02699 user: drh tags: trunk | |
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2014-07-03
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| 12:18 | Change fts3/4 so that the "unicode61" is included in builds by default. It may now be excluded by defining SQLITE_DISABLE_FTS3_UNICODE. check-in: 0cc0230a user: dan tags: trunk | |
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2014-07-01
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| 15:22 | Add another test to verify that SQLite is using stat4 data for composite primary keys on WITHOUT ROWID tables. check-in: 0df1fe72 user: dan tags: trunk | |
| 11:54 | Ensure that all fields are loaded from the stat4 table for records that correspond to indexes on WITHOUT ROWID tables with composite primary keys. check-in: 21981e35 user: dan tags: trunk | |
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2014-06-30
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| 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 | |
| 18:57 | 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 | |
| 18:02 | Fix a problem in where.c with using the stat4 sample data of an index on a WITHOUT ROWID table. Closed-Leaf check-in: 053a210e user: dan tags: stat4-without-rowid | |
| 17:07 | Fix the STAT4 information for WITHOUT ROWID tables. check-in: 5d8628fd user: drh tags: stat4-without-rowid | |
| 15:23 | Fix where.c so that the primary key values appended to every index entry on a WITHOUT ROWID table may be used when useful. check-in: 6624a61d user: dan 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 | |
| 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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| 19:06 | Add an OOM fault injection test for the new code on this branch. Closed-Leaf check-in: c96de490 user: dan tags: stat4-skipscan | |
| 17:35 | Add further tests to skipscan5.test. check-in: 4b8230e8 user: dan tags: stat4-skipscan | |
| 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 | |
| 15:26 | Fix a problem with using stat4 samples of type text when estimating the rows visited by a range-query/skip-scan loop. check-in: dfb09db6 user: dan 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 | |
| 14:25 | Merge fixes from trunk with this branch. check-in: 6af219d1 user: dan tags: stat4-skipscan | |
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2014-06-27
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| 20:14 | Fix a couple of problems in estimating the number of rows visited by a range query that uses a skip-scan. check-in: 219736f5 user: dan tags: stat4-skipscan | |
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2014-06-26
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| 22:17 | Add some more IN operator tests. check-in: fb32e374 user: mistachkin tags: trunk | |
| 21:32 | Fix compilation issue when STAT4 is not enabled. check-in: 74a5454a user: mistachkin tags: stat4-skipscan | |
| 21:28 | Revise the affinity returned for expressions flagged as 'generic'. Fix for [9a8b09f8e6]. check-in: 92f7ad43 user: mistachkin tags: trunk | |
| 20:21 | Attempt to use sqlite_stat4 data to estimate the number of rows visited by a range query that uses a skip-scan. This code is largely untested. check-in: 01dc8102 user: dan tags: stat4-skipscan | |
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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 | |
| 10:18 | Fix a problem with SQLITE_OMIT_WSD builds. check-in: 07dda49c user: dan tags: trunk | |
| 10:04 | Fix a problem with SQLITE_OMIT_WAL builds. check-in: 612b6d1b user: dan 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 | |
| 15:11 | 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 | |
| 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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| 22:45 | Fix CSV import issue, reported via the mailing list, in the shell when the file to be imported ends with an empty line. check-in: fc918f7d user: mistachkin tags: trunk | |
| 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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2014-06-09
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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 | |
| 20:24 | 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 | |