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100 check-ins occurring around d6fac8a1d3efeb2c.
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2020-11-20
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| 11:17 | Declare a variable "const" in order to avoid compiler warnings. (check-in: 4f5481bf user: dan tags: wal2) | |
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2020-11-19
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| 21:12 | The xFullPathname method of the unix VFS now normalizes the filenames by omitting surplus "/", "/./" and "/../" strings. (check-in: c38dec6f user: drh tags: trunk) | |
| 21:01 | More test case changes so that shared-cache mode tests all work with normalized database names. (Closed-Leaf check-in: 6f0d5f09 user: drh tags: stronger-nofollow) | |
| 20:07 | Fix the tkt3793 test case so that work even when filenames are normalized. (check-in: e85d32ac user: drh tags: stronger-nofollow) | |
| 19:43 | Use an ephemeral table rather than a RowSet to remember rowids in the two-pass UPDATE algorithm, as this uses much less memory for large UPDATEs. (check-in: 842c4327 user: drh tags: trunk) | |
| 16:08 | Fix things so that sqlite3_database_file_object() works with wal2 filenames. (check-in: c2426ae8 user: dan tags: wal2) | |
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2020-11-18
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| 23:44 | If a read() or pread() indicates that the database file is unreadable due to filesystem damage, then it returns SQLITE_IOERR_CORRUPTFS which is then converted into SQLITE_CORRUPT before being returned to the application. (check-in: 849e4e14 user: drh tags: trunk) | |
| 21:50 | Improvements to the mechanism that attempts to report SQLITE_CORRUPT if pread() says that the underlying filesystem is corrupt. (Closed-Leaf check-in: b887c750 user: drh tags: detect-corrupt-fs) | |
| 21:15 | Merge trunk changes into this branch. (check-in: 6004de52 user: dan tags: reuse-schema) | |
| 20:55 | Update cksumvfs.c so that if SQLITE_AMALGAMATION is defined, SQLITE_CKSUMVFS_STATIC is implied. (check-in: 184e9d78 user: dan tags: trunk) | |
| 18:36 | Add test infrastructure for cksumvfs. And update cksumvfs so that it works in concert with version 2 VFSs. No changes to core SQLite. (check-in: 43d4801d user: dan tags: trunk) | |
| 14:30 | Fix a problem causing sqlite3_carray_bind() to return an undefined value. (check-in: 083203a5 user: dan tags: trunk) | |
| 14:12 | Update test code to fix a problem with SQLITE_OMIT_VIRTUAL_TABLE builds. (check-in: 29c779a0 user: dan tags: trunk) | |
| 12:48 | On unix, for certain error codes of read()/pread() return SQLITE_IOERR_CORRUPTFS instead of SQLITE_IOERR_READ. And then convert this error into SQLITE_CORRUPT prior to returning back to the application. (check-in: 9538ea84 user: drh tags: detect-corrupt-fs) | |
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2020-11-17
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| 21:26 | Claw back most of the performance lost in the previous commit. (Closed-Leaf check-in: df8ce267 user: drh tags: lowmem-update-exp) | |
| 21:09 | Fix trivial memory leaks in the shell and sqldiff programs. (check-in: 272793e5 user: dan tags: trunk) | |
| 18:25 | Fix test file busy2.test so that it works with the "inmemory_journal" permutation. (check-in: b192fddd user: dan tags: trunk) | |
| 14:41 | Add a single-argument form to the CARRAY table-valued function, with content bound using the sqlite3_carray_bind() interface that is included with the extension. (check-in: 7b229cb1 user: drh tags: trunk) | |
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2020-11-16
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| 18:45 | Enhance the unix VFS so that it removes extra "/", "/./" and "/../" from the database filename. (check-in: 7ba89d3e user: drh tags: stronger-nofollow) | |
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2020-11-14
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| 20:03 | Modify UPDATE so that two-pass updates on a rowid table use an ephemeral table to store rowids rather than a RowSet. This uses less memory, though it is slower. (check-in: 4673096d user: drh tags: lowmem-update-exp) | |
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2020-11-12
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| 18:16 | Improved diagnostics output with ".wheretrace 0x800". No changes to non-debug builds. (check-in: 772ae83c user: drh tags: trunk) | |
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2020-11-11
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| 19:11 | Fix a typo in a comment. No changes to code. (check-in: 572f1ed5 user: drh tags: trunk) | |
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2020-11-08
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| 20:44 | Use NEVER and ALWAYS macros to confirm that the return value from sqlite3ExprSkipCollateAndLikely() is never NULL in some of its use cases. (check-in: 76d2eb86 user: drh tags: trunk) | |
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2020-11-06
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| 16:48 | Add ALWAYS() to conditionals associated with SHM locking that are always true. (check-in: b599e890 user: drh tags: trunk) | |
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2020-11-05
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| 19:13 | Suppress errors associated with TEMP triggers that reference objects in non-TEMP databases. This is a continuation of the fix for ticket #3810 shown in check-in [ba1afc040171810d] from 2009-08-06, based on a bug report in forum post 157dc791df (check-in: 991ca9b2 user: drh tags: trunk) | |
| 14:50 | Remove unused variable from speedtest1.c (check-in: c0a18565 user: drh tags: trunk) | |
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2020-11-03
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| 11:54 | Make platform compilation clearer, including the section that applies to both *ix and Windows Add link to the detailed compilation instructions Add brief Android section, it seems strange to omit it since Android is the majority use case by numbers (Closed-Leaf check-in: 2a71bebf user: shearer tags: docupdate) | |
| 11:27 | Update for new git-style syntax in Fossil (check-in: d46b6778 user: shearer tags: docupdate) | |
| 11:20 | Add links, especially for the docsrc repo, which is otherwise hard to find (check-in: e03867e2 user: shearer tags: docupdate) | |
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2020-11-02
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| 00:40 | Fix an another OSS-Fuzz discovered assertion fault due to ALTER TABLE and strange triggers. (check-in: 6646d789 user: drh tags: trunk) | |
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2020-10-31
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| 18:58 | Add the -tabs command-line option to the CLI. (check-in: 7d01e84d user: drh tags: trunk) | |
| 16:33 | Update the ALTER TABLE command to correctly handle UPDATE ... FROM statements within trigger programs. (check-in: 3e6af890 user: dan tags: trunk) | |
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2020-10-27
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| 11:58 | Prettify btree.h headings. Close branch. (Closed-Leaf check-in: ee9689ad user: shearer tags: btree-code-documentation) | |
| 11:13 | Typo in btree.h (and unwanted merge; this branch for cherrypicking btree.h only) (check-in: eb6e5fc1 user: shearer tags: btree-code-documentation) | |
| 11:07 | Final commit in btree.h reorg. No more unknowns. (check-in: ea06f1d1 user: shearer tags: btree-code-documentation) | |
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2020-10-26
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| 18:14 | Always create a statement journal when using the OP_ParseSchema opcode, as you never know when it might fail. See the discussion on forum post daa2c728cc. (check-in: aa512f72 user: drh tags: trunk) | |
| 16:22 | Ensure that the table argument passed to Tcl_GetIndexFromObjStruct() in the sessions module test code is declared "static". (check-in: 80eba105 user: dan tags: trunk) | |
| 13:24 | Prevent fts5 tokenizer unicode61 from considering '\0' to be a token characters, even if other characters of class "Cc" are. See forum thread 09609d7e22 for details. (check-in: b7b7bde9 user: dan tags: trunk) | |
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2020-10-22
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| 18:58 | Minor tweaks to query planning weights so that when STAT4 is enabled and functioning, a full table scan is more likely to be selected if that seems like the fastest solution. Only do this when STAT4 info is available because an error has a large potential downside. (check-in: 263293f1 user: drh tags: branch-3.28) | |
| 18:50 | Minor tweaks to query planning weights so that when STAT4 is enabled and functioning, a full table scan is more likely to be selected if that seems like the fastest solution. Only do this when STAT4 info is available because an error has a large potential downside. (check-in: 0e7e113d user: drh tags: trunk) | |
| 18:16 | Test case updates. (Closed-Leaf check-in: 27c681c9 user: drh tags: avoid-bad-indexes) | |
| 15:47 | Sometimes it makes sense to do a full table scan rather than try to use an index when most of the rows will be selected. This branch is trying to tune the query planner to make that happen more often. (check-in: 0f42099a user: drh tags: avoid-bad-indexes) | |
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2020-10-20
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| 14:40 | Fix the sqlite3_hard_heap_limit() so that it works with sqlite3_realloc64() in addition to sqlite3_malloc64(). Improvements to OOM processing and debugging aids in the fuzzcheck utility. (check-in: 602d7369 user: drh tags: trunk) | |
| 12:37 | Fix an assert() inside of debug-only code that can fail following an OOM. (check-in: 79da254f user: drh tags: trunk) | |
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2020-10-19
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| 20:49 | Fix an incorrect table ref-count in the new recursive CTE logic that might result in a reference to freed memory following a syntax error. (check-in: 75a02888 user: drh tags: trunk) | |
| 12:35 | Enhance recursive common table expressions to support two or more recursive terms. (check-in: 77e64647 user: drh tags: trunk) | |
| 01:44 | New test cases for recursive CTEs with multiple recursive terms. (Leaf check-in: cd5182bd user: drh tags: cte-enhancement) | |
| 01:23 | Allow multiple recursive terms in the compound SELECT of a recursive CTE. This facilitates writing a query to find find the connected components of an undirected graph. (check-in: 5481fa8c user: drh tags: cte-enhancement) | |
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2020-10-18
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| 18:35 | Fix harmless compiler warnings. (check-in: 7f8802bb user: mistachkin tags: trunk) | |
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2020-10-17
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| 22:13 | Fix the SQLITE_DESERIALIZE_FREEONCLOSE flag so that it works as it is documented to work. See forum post ba1dff667a (check-in: d6fac8a1 user: drh tags: trunk) | |
| 19:09 | Fix an incorrect printf() in debugging logic in where.c. Problem reported by forum post 80a9c47769772207. (check-in: 883da4da user: drh tags: trunk) | |
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2020-10-15
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| 17:59 | Minor fixes to the cksumvfs documentation in the header comment of the source file. Enhance speedtest1.c so that it can more easily do performance comparisons of cksumvfs. (check-in: ed3bb818 user: drh tags: trunk) | |
| 14:37 | The windows VFS accepts query parameter "exclusive=true" to cause it to take a mandatory file lock, preventing other applications from even reading the file. See forum thread 11b5560864189b5d. (check-in: 05b573fd user: drh tags: trunk) | |
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2020-10-14
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| 21:31 | Enhancements to TclKit batch tool for MSVC. (check-in: 2a8a4552 user: mistachkin tags: trunk) | |
| 21:30 | Fix typo in a documentation comment. (check-in: 462adc7d user: mistachkin tags: trunk) | |
| 15:46 | Enhanced documentation for sqlite3_vtab_nochange() to make it clear that it is an optimization and that virtual table implementations should be prepared for it to always return false. (check-in: 3e264361 user: drh tags: trunk) | |
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2020-10-12
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| 18:09 | Fix some fts5 problems with signed integer overflow causing segfaults in -ftrapv builds. (check-in: 7e17c2f4 user: dan tags: trunk) | |
| 17:57 | Improved quoting of the table name argument for the ".import" command of the CLI. See forum post 34591fefbe. (check-in: ce97b56d user: drh tags: trunk) | |
| 16:54 | Add options --data-only and --nosys to the ".dump" command in the CLI. (check-in: 57123b14 user: drh tags: trunk) | |
| 15:27 | Fix ALTER TABLE so that it can run even if the schema contains unknown collation sequences. (check-in: bc4bb943 user: dan tags: trunk) | |
| 14:56 | Add the --nosys option to the .schema command in the CLI. (check-in: b72ee694 user: drh tags: trunk) | |
| 14:29 | Fix UPDATE FROM statements on virtual tables that are declared WITHOUT ROWID. See forum post 0fee7951eb for more information. (check-in: bcb0bc6a user: dan tags: trunk) | |
| 13:24 | Fix BEGIN IMMEDIATE and BEGIN EXCLUSIVE so that they work even if one or more of the database files in the connection are read-only. Test cases for this are in TH3. (check-in: 2fa08c39 user: drh tags: trunk) | |
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2020-10-07
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| 11:24 | In the CSV extension, use SQLITE_TRANSIENT rather than SQLITE_STATIC on return values that can in fact change. (check-in: 54b54f02 user: drh tags: trunk) | |
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2020-10-06
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| 15:48 | More additions and improvements to btree.h documentation (check-in: a49a7cde user: shearer tags: btree-code-documentation) | |
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2020-10-05
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| 16:41 | Allow fts5 trigram tables created with detail=column or detail=none to optimize LIKE and GLOB queries. Allow case-insensitive tables to optimize GLOB as well as LIKE. (check-in: 64782463 user: dan tags: trunk) | |
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2020-10-03
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| 19:16 | Do not apply affinities when creating entries for automatic indexes on views. Fix for [95302bdb]. (check-in: df12f097 user: dan tags: trunk) | |
| 17:06 | Fix a segfault caused by running "column LIKE NULL" against an fts5 table using the trigram tokenizer. Fix for [e33ee62575fc22]. (check-in: 6e72a08d user: dan tags: trunk) | |
| 14:36 | FTS5 does not handle tokens that contain embedded nul characters. Prevent the trigram tokenizer from returning such tokens. Fix for [2ba5930b2]. (check-in: b1d04874 user: dan tags: trunk) | |
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2020-10-02
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| 15:15 | Fix some test code so that testfixture can build with SQLITE_OMIT_WAL defined. (check-in: dd009cd7 user: dan tags: trunk) | |
| 13:57 | Import further corner-case fixes for the in-scan-vs-index or OP_SeekScan optimization from trunk. (check-in: c144d640 user: drh tags: branch-3.28) | |
| 13:48 | Additional corner-case fixes for the in-scan-vs-index or OP_SeekScan optimization. (check-in: ad5ab24e user: drh tags: trunk) | |
| 12:49 | Remove an incorrect assert() from the OP_SeekScan opcode. (check-in: c0400f8c user: drh tags: trunk) | |
| 12:42 | Fix a faulty assert() statement. Add new test cases. (check-in: 80ecdb3d user: drh tags: trunk) | |
| 12:11 | For the OP_SeekScan optimization, the OP_IdxGT does not necessarily come right after the OP_SeekGE. So use the P2 operand of OP_SeekScan to point to the first instruction after OP_IdxGT. Problem found by dbsqlfuzz. (check-in: ec37744c user: drh tags: branch-3.28) | |
| 11:55 | For the OP_SeekScan optimization, the OP_IdxGT does not necessarily come right after the OP_SeekGE. So use the P2 operand of OP_SeekScan to point to the first instruction after OP_IdxGT. Problem found by dbsqlfuzz. (check-in: 091d7193 user: drh tags: trunk) | |
| 02:07 | Disable the OP_SeekScan opcode of the in-scan-vs-index optimization when in PRAGMA reverse_unordered_selects mode, as the OP_SeekScan only works with forwards scans. Thanks to OSSFuzz for pointing out the problem to us. (check-in: 9a1cdf7e user: drh tags: branch-3.28) | |
| 02:02 | Disable the OP_SeekScan opcode of the in-scan-vs-index optimization when in PRAGMA reverse_unordered_selects mode, as the OP_SeekScan only works with forwards scans. Thanks to OSSFuzz for pointing out the problem to us. (check-in: c75c3a3b user: drh tags: trunk) | |
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2020-10-01
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| 17:24 | Add experimental "trigram" tokenizer to fts5. (check-in: c4e8ec79 user: dan tags: trunk) | |
| 17:15 | Add the -trigram option to the fts5txt2db.tcl script. (Closed-Leaf check-in: a394dd26 user: dan tags: fts5-trigram) | |
| 16:10 | Add tests for the trigram tokenizer. Fix minor issues. (check-in: 897ced99 user: dan tags: fts5-trigram) | |
| 15:46 | Fix the OP_SeekScan opcode so that its variable names do not cause problems for the test/vdbe-compress.tcl script. (check-in: 7a78274a user: drh tags: trunk) | |
| 14:38 | Remove a debugging printf() accidentally left in the previous check-in. (check-in: e9d1efa5 user: drh tags: trunk) | |
| 14:36 | The IN-early-out optimization does not work for virtual tables. Do not try to use it there. Fix for ticket [2d5a3163563d559f]. Test cases in TH3. (check-in: dbec6910 user: drh tags: trunk) | |
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2020-09-30
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| 20:35 | Add experimental unicode-aware trigram tokenizer to fts5. And support for LIKE and GLOB optimizations for fts5 tables that use said tokenizer. (check-in: 0d7810c1 user: dan tags: fts5-trigram) | |
| 18:22 | Improved query optimization for multi-column indexes where the second or later columns are constrained by an IN operator and the earlier index columns limit the search to a small number of rows. Use the new OP_SeekScan opcode which does scanning of the relevant range of the index but gives up and falls back to doing a seek if the number of rows scanned grows to large, in order to guard against pathological cases where the estimated number of rows to be scanned is far too small. (check-in: f07ac3fb user: drh tags: branch-3.28) | |
| 18:06 | Improved query optimization for multi-column indexes where the second or later columns are constrained by an IN operator and the earlier index columns limit the search to a small number of rows. Use the new OP_SeekScan opcode which does scanning of the relevant range of the index but gives up and falls back to doing a seek if the number of rows scanned grows to large, in order to guard against pathological cases where the estimated number of rows to be scanned is far too small. (check-in: 4a43430f user: drh tags: trunk) | |
| 18:03 | For the OP_SeekScan opcode, adjust the number of steps run before giving up based on the estimated number of comparisons needed to perform a seek. (Closed-Leaf check-in: dc4172e6 user: drh tags: in-scan-vs-index) | |
| 17:32 | Back out the incorrect optimization of check-in [e51ecadcbdef5ce6] as ticket [5c4e7aa793943803] reports a case where the optimization does not work. (check-in: 7395e96b user: drh tags: trunk) | |
| 15:36 | In the query flattener when substituting expression Y in place of expression X, if X is marked has having come from an ON or USING clause of a LEFT JOIN, then be sure that all subexpressions of Y, not just the root node of Y, are similarly marked. Otherwise, if Y is an AND operator, it will be split up during WHERE clause analysis and the subexpressions will not get the special treatment needed by LEFT JOIN ON/USING clauses. Fix for ticket [66e4b0e271c47145]. (check-in: 69f9eb73 user: drh tags: trunk) | |
| 09:17 | Better understanding of savepoint code (check-in: ce6d8d62 user: shearer tags: trunk) | |
| 00:48 | Add an sqlite3FaultSim() call to btreeNext() to make it easier to simulate I/O errors in calls to sqlite3BtreeNext(), and in OP_SeekScan. (check-in: 29cca775 user: drh tags: in-scan-vs-index) | |
| 00:10 | In the OP_SeekScan opcode, changes to pOp must occur after the call to VdbeBranchTaken() so that the VdbeBranchTaken() attributes the branch to the correct opcode. (check-in: 61fbe7aa user: drh tags: in-scan-vs-index) | |
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2020-09-29
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| 23:52 | The OP_SeekScan opcode is a no-op if the cursor is not pointing to a valid row upon entry. (check-in: 4afc96b5 user: drh tags: in-scan-vs-index) | |
| 20:22 | Coverage testing of the OP_SeekScan opcode. Fix a problem that comes up when OP_SeekScan reaches the end of the table. (check-in: 9e57e758 user: drh tags: in-scan-vs-index) | |
| 17:29 | Improved comments on the new OP_SeekScan opcode. (check-in: 6110fdd5 user: drh tags: in-scan-vs-index) | |
| 16:05 | Improved performance by manually in-lining the sqlite3VdbeIdxKeyCompare() routine for the OP_IdxGT opcode and its kin. (check-in: 2206a2c8 user: drh tags: in-scan-vs-index) | |
| 15:32 | Typo fix to repair the early-out optimization. Also avoid unnecessary OP_SeekHit opcodes. (check-in: 8fd7d8df user: drh tags: in-scan-vs-index) | |
| 01:48 | The OP_SeekScan opcode works, but using it requires disabling the IN-earlyout optimization because the OP_IfNoHope opcode might move the cursor. (check-in: f3c36b84 user: drh tags: in-scan-vs-index) | |
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2020-09-28
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| 19:51 | Revisiting the IN-scan optimization to try to fix it for the corner case where the statistics deceive the query planner into using a scan when an indexed lookup would be better. This check-in changes the code generation to do the IN-scan using a new OP_SeekScan opcode. That new opcode is designed to abandon the scan and fall back to a seek if it doesn't find a match quickly enough. For this work-in-progress check-in, OP_SeekScan is still a no-op and OP_SeekGE still ends up doing all the work. (check-in: d720b698 user: drh tags: in-scan-vs-index) | |