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108 events for the month beginning 2013-05-01 by user drh
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2013-05-31
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| 20:43 | The NGQP might not find a solution if INDEXED BY constraints on the query are set wrong. If that is the case, print a "no query solution" error and abort before trying to use the non-existant solution. (check-in: 42511a7e user: drh tags: nextgen-query-plan-exp) | |
| 20:28 | Do not search using ON clause constraints of LEFT JOINs to the right of the table. (check-in: 723f901a user: drh tags: nextgen-query-plan-exp) | |
| 20:00 | Make sure a unique cursor number is allocated for automatic indices. (check-in: 433d1aec user: drh tags: nextgen-query-plan-exp) | |
| 19:14 | Do not attempt to generate code in the NGQP if there have been prior errors, since with prior errors some of the expressions might not be fully named resolved. (check-in: 665e4291 user: drh tags: nextgen-query-plan-exp) | |
| 18:20 | Fix a problem with code generation on LEFT JOIN of tables without an index. (check-in: 0b1bee92 user: drh tags: nextgen-query-plan-exp) | |
| 18:13 | Another virtual table fix in NGQP. (check-in: 2f2ce416 user: drh tags: nextgen-query-plan-exp) | |
| 17:55 | Fix problems in the virtual table logic for NGQP. (check-in: 23af28e2 user: drh tags: nextgen-query-plan-exp) | |
| 15:50 | Remove the definitions of objects that are no longer used: WhereCost, WherePlan, and WhereBestIdx. (check-in: 816f8add user: drh tags: nextgen-query-plan-exp) | |
| 15:36 | Improved handling of errors when doing run-time loading of an SQLite shared-library into TCL. (check-in: b3f23d18 user: drh tags: trunk) | |
| 15:18 | Allow tracing of whereLoopInsert() when the 0x8 bit is set on ".wheretrace". Remove the use of sqlite_query_plan from where2.test. Fix a bug in the code generator for OR clause optimizations. (check-in: 707f0323 user: drh tags: nextgen-query-plan-exp) | |
| 14:31 | Enhance the shell to provide more flexibility when entering numeric arguments on dot-commands. In particular, allow hex arguments to .wheretrace. (check-in: b9578c37 user: drh tags: nextgen-query-plan-exp) | |
| 13:36 | Futher enhancements to the ORDER BY optimizer. (check-in: d8efa5f8 user: drh tags: nextgen-query-plan-exp) | |
| 12:43 | Improved detection of unnecessary ORDER BY clauses. (check-in: 58805eb3 user: drh tags: nextgen-query-plan-exp) | |
| 11:57 | Fix the constructAutomaticIndex() routine so that it works with NGQP. (check-in: 5e1e6139 user: drh tags: nextgen-query-plan-exp) | |
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2013-05-30
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| 23:21 | Improvements to the ORDER BY suppressor in the NGQP. (check-in: 24a2e9dd user: drh tags: nextgen-query-plan-exp) | |
| 22:27 | Incremental check-in with various NGQP fixes. Many tests still fail. (check-in: a51d8c92 user: drh tags: nextgen-query-plan-exp) | |
| 19:29 | Futher simplifications to the NGQP. Fix some test cases to use EXPLAIN QUERY PLAN rather than the (now obsolete) sqlite_query_plan global variable. (check-in: ae985db4 user: drh tags: nextgen-query-plan-exp) | |
| 19:28 | The expected result in a test case can be of the form "*glob*" or "~*glob*" to match or not match the GLOB pattern. This is useful for matching EXPLAIN QUERY PLAN output that contains regular expression syntax characters like "?", "(", and ")". (check-in: a3b4e261 user: drh tags: nextgen-query-plan-exp) | |
| 17:43 | Cut over the NGQP query planner. Remove lots of legacy code. This check-in compiles but does not work. The test suite gets incorrect answers and crashes. (check-in: 001539df user: drh tags: nextgen-query-plan-exp) | |
| 11:48 | Merge recent trunk changes into the NGQP branch. (check-in: aebe1f26 user: drh tags: nextgen-query-plan-exp) | |
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2013-05-29
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| 17:48 | Updates to the Codec interface to support codecs on attached databases and to allow rekeying in the middle of a transaction. These changes are only applicable if SQLite is compiled with SQLITE_HAS_CODEC. (check-in: d5b084e9 user: drh tags: trunk) | |
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2013-05-28
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| 20:25 | Add the percentile() SQL function as a loadable extension in the ext/misc directory. (check-in: a64d760d user: drh tags: trunk) | |
| 17:30 | Finish removing the sqlite3.inTrans field. In the previous check-in, it was merely commented out because I failed to select File->Save on my text editor. (check-in: 2f97e38a user: drh tags: trunk) | |
| 17:25 | Remove the obsolete and unused sqlite3.inTrans field. (check-in: c3381cd4 user: drh tags: trunk) | |
| 12:11 | Many small harmless comment changes. Removal of obsolete comments and fixing misspelled words. No changes to code. (check-in: a0d5cc93 user: drh tags: trunk) | |
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2013-05-27
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| 17:59 | Update the NGQP to record which loops need be run in reverse order to satisfy ORDER BY clauses. (check-in: 211f7a53 user: drh tags: nextgen-query-plan-exp) | |
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2013-05-24
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| 14:52 | Record in the WhereLoop object the set of virtual table constraints that need not be separately checked. (check-in: b49fa745 user: drh tags: nextgen-query-plan-exp) | |
| 13:55 | Merge the latest trunk changes into the NGQP branch. (check-in: 7c8f992c user: drh tags: nextgen-query-plan-exp) | |
| 12:47 | Set _XOPEN_SOURCE to 600 so that fchmod() will (hopefully) work on FreeBSD. (check-in: 61a10452 user: drh tags: trunk) | |
| 11:57 | Fix harmless compiler warnings in the shell. (check-in: 9e2c17c5 user: drh tags: trunk) | |
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2013-05-23
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| 20:52 | Add OGC GeoPackage files to the magic.txt database. (check-in: dab6a328 user: drh tags: trunk) | |
| 01:40 | Cause the mmap_size PRAGMA to immediately change the mmap space if the database connection is already active. In particular, reducing mmap_size will immediately free up process address space. (check-in: 76117792 user: drh tags: trunk) | |
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2013-05-22
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| 20:49 | Use the NGQP plan for EXPLAIN QUERY PLAN output. This change causes 207 errors in veryquick.test, many of which are benign. (check-in: f783e8e6 user: drh tags: nextgen-query-plan-exp) | |
| 17:01 | Allow the rowid at the end of an index to be used in a constraint on that index. (check-in: 9bf0524d user: drh tags: nextgen-query-plan-exp) | |
| 02:06 | Improvements to ORDER BY handling in the NGQP. Fix an "exit" mistakenly left in a test script during the previous check-in. (check-in: 12c709b4 user: drh tags: nextgen-query-plan-exp) | |
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2013-05-21
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| 19:23 | Enhanced "wheretrace" output in the NGQP solver routine. (check-in: 04dfb85a user: drh tags: nextgen-query-plan-exp) | |
| 15:52 | Work toward improving the NGQP's ability to optimize out ORDER BY clauses. (check-in: 67367f1e user: drh tags: nextgen-query-plan-exp) | |
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2013-05-20
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| 15:14 | Merge in all trunk changes up through the 3.7.17 release. (check-in: 14ab6675 user: drh tags: nextgen-query-plan-exp) | |
| 13:01 | Update the sessions branch to the official 3.7.17 release code. (check-in: fc88f731 user: drh tags: sessions) | |
| 00:56 | Version 3.7.17 (check-in: 118a3b35 user: drh tags: trunk, release, version-3.7.17) | |
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2013-05-17
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| 20:16 | Remove a stray tab character from the transitive_closure extension source code. (check-in: 7a9aa21c user: drh tags: trunk) | |
| 17:15 | Fix a bug in SQLITE_TRACE_SIZE_LIMIT that was introduced by check-in [1a1cf5aa86734c8]. That check-in was to remove harmless compiler warnings. So once again, we have introduced a real bug into SQLite by attempting to eliminate a harmless compiler warning. (check-in: cec2bcb4 user: drh tags: trunk) | |
| 12:52 | Use sum() instead of total() in mptest/multiwrite01.test too. (check-in: d0c2288c user: drh tags: trunk) | |
| 12:51 | Use sum() instead of total() in the mptest/crash01.test script. (check-in: 8ba0fc98 user: drh tags: trunk) | |
| 10:58 | Update the sessions branch to the latest 3.7.17 beta. (check-in: af8057ef user: drh tags: sessions) | |
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2013-05-16
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| 01:02 | Treat identifiers in the HAVING clause the same as in the WHERE clause. Only consider AS names from the result set to match if there are no other matches. Continuation of the fix for [2500cdb9be05]. This check-in fixes a bug found by SqlLogicTest during release testing for version 3.7.17. (check-in: 9ffff3d0 user: drh tags: trunk) | |
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2013-05-15
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| 18:45 | Update the sessions branch with the latest trunk changes. (check-in: d0935505 user: drh tags: sessions) | |
| 18:21 | • Fixed ticket [e636a050]: Database corruption in shared cache mode plus 5 other changes (artifact: 79a6dca6 user: drh) | |
| 18:20 | • Edit [5cc1cc55d28a73d3|5cc1cc55]: Edit check-in comment. (artifact: a86a127a user: drh) | |
| 18:19 | • Edit [6071b7cce067c807|6071b7cc]: Edit check-in comment. (artifact: 7c3807be user: drh) | |
| 17:58 | • Fixed ticket [0fc59f90]: Missing COLLATE function does not result in an error plus 5 other changes (artifact: d9a6a8fc user: drh) | |
| 17:47 | The sqlite3ExprCollSeq() function can no longer be called while parse the schema, so remove the code path inside of sqlite3ExprCollSeq() that dealt with that case. (check-in: 867b3e3b user: drh tags: trunk) | |
| 17:08 | Make sure an sqlite3_close() or a rollback on one shared-cache connection does not disrupt the operation of other connections using the same shared cache. Fix for ticket [e636a050b709]. (check-in: 5cc1cc55 user: drh tags: trunk) | |
| 16:08 | Fix the sharedA.test module so that it does not attempt to run TCL callbacks on a different thread from where the interpreter was originally created. (Closed-Leaf check-in: 65ff754e user: drh tags: shared-cache-fixes) | |
| 13:23 | • New ticket [0fc59f90] Missing COLLATE function does not result in an error. (artifact: a88ea24f user: drh) | |
| 13:05 | Add the rot13.c loadable extension. (check-in: 8f9bd8e7 user: drh tags: trunk) | |
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2013-05-14
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| 23:13 | Merge together the fork in this branch. (check-in: 164e3d4d user: drh tags: shared-cache-fixes) | |
| 23:12 | Fix an assert() in unlockBtreeIfUnused() so that it checks for the existance of an untripped cursor, not for the existance of any cursor at all. (check-in: a6f851d0 user: drh tags: shared-cache-fixes) | |
| 15:31 | First attempt to get ORDER BY optimization working in NGQP. (check-in: 9fe20292 user: drh tags: nextgen-query-plan-exp) | |
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2013-05-13
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| 18:00 | • New ticket [e636a050] Database corruption in shared cache mode. (artifact: 2f2df1f3 user: drh) | |
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2013-05-11
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| 00:06 | Minor fixes to the OR-clause processing in the NGQP. (check-in: d6946f33 user: drh tags: nextgen-query-plan-exp) | |
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2013-05-10
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| 20:26 | Now generating OR-clause plans. (check-in: e17003fc user: drh tags: nextgen-query-plan-exp) | |
| 15:16 | Update the NGQP so that it can produce plans that include automatic indices. (check-in: 586b55d8 user: drh tags: nextgen-query-plan-exp) | |
| 03:30 | Factor out common operations into whereLoopAddAll(). Add stubs for missing features. (check-in: 0278e420 user: drh tags: nextgen-query-plan-exp) | |
| 02:11 | Merge in the latest trunk changes. (check-in: 5ed31c82 user: drh tags: nextgen-query-plan-exp) | |
| 02:00 | Free up bits of wsFlags for reuse. Install the ORDER BY optimization infrastructure for the NGQP. (check-in: 82d50e19 user: drh tags: nextgen-query-plan-exp) | |
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2013-05-09
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| 23:40 | Merge trunk changes into the sessions branch. (check-in: 512f8a1e user: drh tags: sessions) | |
| 18:12 | Add assert()s to the implementation of xRead() in the built-in VFSes to verify that the offset parameter is always non-negative. (check-in: cf5c3642 user: drh tags: trunk) | |
| 14:20 | • Fixed ticket [f2369304]: Incorrect results when OR is used in the ON clause of a LEFT JOIN plus 5 other changes (artifact: 4712b561 user: drh) | |
| 14:20 | Do not move WHERE clause terms inside OR expressions that are contained within an ON clause of a LEFT JOIN. Fix for ticket [f2369304e47167e3e]. (check-in: 1128575d user: drh tags: trunk) | |
| 13:38 | • New ticket [f2369304] Incorrect results when OR is used in the ON clause of a LEFT JOIN. (artifact: 979fa9ab user: drh) | |
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2013-05-08
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| 20:05 | Fix memory leaks in the NGQP logic for virtual tables. (check-in: 3c2e83a4 user: drh tags: nextgen-query-plan-exp) | |
| 18:50 | Merge all recent trunk changes into the sessions branch. (check-in: ae6c4a09 user: drh tags: sessions) | |
| 17:06 | Fix a couple of harmless compiler warnings in the fts3_tokenize virtual table. (check-in: 1fa8c457 user: drh tags: trunk) | |
| 16:58 | • Fixed ticket [6709574d]: COLLATE clause in ORDER BY causes incorrect EXCEPT plus 5 other changes (artifact: 63278902 user: drh) | |
| 16:57 | Make sure the ORDER BY collating sequences are compatible with the comparison collations before using the merge algorithm for compound SELECT statements. Fix for ticket [6709574d2a8d8]. (check-in: ce853a75 user: drh tags: trunk) | |
| 14:35 | • Edit [bd9327a9684b9997|bd9327a9]: Edit check-in comment. (artifact: 4e9edb0e user: drh) | |
| 14:20 | Fix the wholenumber virtual table so that it returns higher costs for unconstrained usage. Cherrypick from [ceff8955020cd13]. (check-in: 7227b615 user: drh tags: trunk) | |
| 14:14 | NGQP working with virtual tables, though many legacy tests fail and there are yet some memory leaks. (check-in: bd9327a9 user: drh tags: nextgen-query-plan-exp) | |
| 14:13 | Fix the wholenumber virtual table so that it returns higher costs for unconstrained usage. (check-in: ceff8955 user: drh tags: nextgen-query-plan-exp) | |
| 04:22 | More bug fixes to the WhereLoop generator and the solver in NGQP. Now finds the best plan for TPC-H Q8. This seems to prove the concept, but there is still much work to be done. (check-in: 8e5aad37 user: drh tags: nextgen-query-plan-exp) | |
| 03:22 | Bug fixes in the solver. (check-in: b36034bb user: drh tags: nextgen-query-plan-exp) | |
| 03:05 | Add the NGQP solver. (check-in: 5d37587c user: drh tags: nextgen-query-plan-exp) | |
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2013-05-07
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| 23:06 | Continued progress on generating good WhereLoop objects for the new query planner. (check-in: 15cc8a16 user: drh tags: nextgen-query-plan-exp) | |
| 19:44 | Inserting a few WhereLoop objects without leaking memory. Costs are not correct. Inequality and IN constraints are not implemented. (check-in: e8881a8b user: drh tags: nextgen-query-plan-exp) | |
| 17:49 | Make sure the ORDER BY collating sequences are compatible with the comparison collations before using the merge algorithm for compound SELECT statements. Candidate fix for ticket [6709574d2a8d8]. (Closed-Leaf check-in: fc3630cd user: drh tags: tkt-6709574) | |
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2013-05-06
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| 21:06 | • Add attachment sk2.sql to ticket [4eb3a0bd] (artifact: 6398d0f5 user: drh) | |
| 21:05 | • New ticket [4eb3a0bd] Performance regression in Skrooge. (artifact: 2fcf41f2 user: drh) | |
| 21:01 | In the command-line shell, output the elements of the schema in the order that they appear in the sqlite_master table. This is necessary in some cases to make the schema parsable. (check-in: e5b3cd74 user: drh tags: trunk) | |
| 20:29 | • Fixed ticket [2f96536e]: .tables output is not redirected into .output file plus 5 other changes (artifact: d54d7c3d user: drh) | |
| 20:28 | In the command-line shell, make sure the output of dot-commands goes to the same redirected output stream as the result of queries. Ticket [2f96536e7ff7dba] (check-in: b72d3659 user: drh tags: trunk) | |
| 18:49 | • Fixed ticket [5eaa61ea]: sigbus on disk ful in WAL mode plus 3 other changes (artifact: 77a9876b user: drh) | |
| 15:21 | • New ticket [6709574d] COLLATE clause in ORDER BY causes incorrect EXCEPT. (artifact: 5bbf9ac1 user: drh) | |
| 14:57 | Add an assert() to fts3_expr.c in order to silence a clang warning. (check-in: d8dc2c5f user: drh tags: trunk) | |
| 13:45 | • Ticket [0eb70d77] Invalid pointer passed to the authorizer callback status still Fixed with 3 other changes (artifact: ee1c6f48 user: drh) ... 1 similar event omitted. | |
| 13:22 | Make sure the authorizer callback gets a valid pointer to "ROWID" for the column-name parameter when doing an UPDATE that changes the rowid. Fix for ticket [0eb70d77cb05bb2272]. (check-in: 26a59bb8 user: drh tags: trunk) | |
| 13:03 | • New ticket [0eb70d77] Invalid pointer passed to the authorizer callback. (artifact: 6ec5e901 user: drh) | |
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2013-05-04
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| 20:25 | In where.c, make findTerm() a wrapper around methods to a new WhereScan object which is capable of finding all suitable matching terms, not just the first. This check-in includes some prototype functions for building WhereLoop objects. (check-in: dd92b8fa user: drh tags: nextgen-query-plan-exp) | |
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2013-05-03
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| 20:08 | Add magic numbers for Bentley Systems application files. (check-in: 9314b080 user: drh tags: trunk) | |
| 18:29 | Merge all recent trunk changes into the sessions branch. (check-in: 3879ab1b user: drh tags: sessions) | |
| 15:23 | Allocate meta(8) in the header as the "application ID" and add the "PRAGMA application_id" command to query and set it. (check-in: b2efe4f2 user: drh tags: trunk) | |
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2013-05-02
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| 00:15 | Begin inserting some experimental code for the next generation query planner. (check-in: ccaf4c3f user: drh tags: nextgen-query-plan-exp) | |
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2013-05-01
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| 20:40 | Fix comments in the magic number file. (Closed-Leaf check-in: 5a500848 user: drh tags: application-id) | |
| 20:36 | Preserve the application-ID across VACUUM. Updates to the magic number file. (check-in: 4a190bea user: drh tags: application-id) | |
| 19:49 | Allocate 4 bytes of unused header space for an "Application ID". Add the "PRAGMA application_id" command to set and query this identifier. Add the "magic.txt" file to show how the posix file command might use this application id. (check-in: 28c9e7fd user: drh tags: application-id) | |
| 17:58 | Do not use a transitive constraint to an IN operator where the RHS is a constant if there exists a direct == operator to another table in an outer loop. (check-in: faedaeac user: drh tags: trunk) | |
| 17:22 | Avoid redundant constraint checking due to transitive constraints. (check-in: 329478cb user: drh tags: trunk) | |