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95 check-ins for the month beginning 2020-03-01
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2020-03-31
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| 20:57 | Add "PRAGMA analysis_limit=N;" to limit the number of rows visited by ANALYZE when N is positive. Positive N also disables collecting stat4. (check-in: a279b151c1 user: drh tags: approximate-analyze) | |
| 18:41 | Merge recent enhancements from trunk. (check-in: c705ce266a user: drh tags: approximate-analyze) | |
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2020-03-30
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| 19:38 | Minor bug fix in NATSORT collating function. (check-in: a61be10927 user: drh tags: natsort) | |
| 15:39 | Add the NATSORT collating sequence. No test cases yet. (check-in: 79fcaa8e07 user: drh tags: natsort) | |
| 13:35 | Use __atomic_load_n() and __atomic_store_n() for a few more things where they are available. (check-in: a49f8ec552 user: dan tags: trunk) | |
| 11:17 | Fix "GCC_VESRION" typo in wal.c. (check-in: fbd9378727 user: dan tags: trunk) | |
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2020-03-28
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| 19:02 | Enhancements to the SQLITE_ENABLE_SETLK_TIMEOUT compile-time option to avoid rare deadlocks on recovery. (check-in: 06885e9aa4 user: drh tags: trunk) | |
| 12:01 | MSVC does not allow constant expressions as initializers for constants with /fp:strict. (check-in: 076658e5d2 user: drh tags: trunk) | |
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2020-03-27
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| 17:23 | Modifications to the way blocking locks are used in SQLITE_ENABLE_SETLK_TIMEOUT builds so that multiple processes or threads may not deadlock when operating on a single database. (Closed-Leaf check-in: c516027d5f user: dan tags: setlk-deadlock-fix) | |
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2020-03-26
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| 16:48 | Add the tables_used() table-valued function as a variation on bytecode(). (check-in: 6283c677d5 user: drh tags: bytecode-function) | |
| 15:28 | Merge updates from trunk. (check-in: d7db091018 user: drh tags: bytecode-function) | |
| 00:29 | Reinstate the optimization that converts "x IN (y)" into "x==y". (check-in: 27936e6884 user: drh tags: trunk) | |
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2020-03-25
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| 20:31 | For the LIKE pattern in the .dump command of the CLI, accept backslash as an escape character. (check-in: 029ceea612 user: drh tags: trunk) | |
| 12:50 | Enhance the ".dump" command in the CLI so that it accepts multiple LIKE pattern arguments and shows the union of all matching tables. (check-in: 45fba3d705 user: drh tags: trunk) | |
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2020-03-24
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| 18:41 | Optimize the "subprog IS NULL" constraint. (check-in: ca8c5f028b user: drh tags: bytecode-function) | |
| 17:52 | Fix a memory leak. (check-in: c9f3405eea user: drh tags: bytecode-function) | |
| 13:27 | Provide content for the bytecode.subprog column. (check-in: df893364b7 user: drh tags: bytecode-function) | |
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2020-03-23
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| 23:17 | Fix the build so that it works even without SQLITE_ENABLE_EXPLAIN_COMMENTS. (check-in: 5896cbf4d0 user: drh tags: bytecode-function) | |
| 20:58 | The bytecode() function now runs and sometimes works, but it untested and there are known problems. (check-in: 6819b86eb2 user: drh tags: bytecode-function) | |
| 19:14 | Further simplification and modularization of the EXPLAIN logic. (check-in: aee1c12f42 user: drh tags: bytecode-function) | |
| 17:24 | Begin breaking appear the sqlite3VdbeList() routine into subroutines that can be reused by the bytecode() table. (check-in: 2c4dd79fbd user: drh tags: bytecode-function) | |
| 15:49 | Infrastructure for the bytecode() table-valued function. The function itself is not yet implemented. (check-in: 2795f0d633 user: drh tags: bytecode-function) | |
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2020-03-21
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| 23:10 | Fix to the recomputation of the colUsed field added by check-in [a9bb71ba708ba722]. This fixes ticket [5829597ac43811e3]. (check-in: 5d14a1c4f2 user: drh tags: trunk) | |
| 22:03 | Enhance the treeview system to show the SrcList_item.colUsed field for FROM clause elements. (check-in: 8a5c539b77 user: drh tags: trunk) | |
| 20:58 | Simplify some of the code modified by the previous commit. (check-in: 04abadb545 user: dan tags: trunk) | |
| 15:41 | Ensure that "main" can always be used to refer to the main database, even if it has been renamed using SQLITE_DBCONFIG_MAINDBNAME. (check-in: 682b426f56 user: dan tags: trunk) | |
| 15:10 | Consolidate some code on this branch. (Closed-Leaf check-in: a85c63daa6 user: dan tags: main-alias-fix) | |
| 15:07 | Change a bitfield in sqlite3_stmt into an unsigned character, for slightly smaller code and better performance. (check-in: 0d4d3c6424 user: drh tags: trunk) | |
| 14:22 | Performance optimization in sqlite3VdbeMakeReady(). (check-in: aa92f9b95f user: drh tags: trunk) | |
| 14:05 | Merge updates from trunk. (Leaf check-in: 2383aa2cb8 user: drh tags: explain-improvements) | |
| 03:40 | Back out the sqlite3_stmt_mode() and EXPLAIN TABLES enhancements, but keep the other miscellaneous improvements to EXPLAIN that were implemented while adding the above: Turn magic numbers into symbolic constants. Add the sqlite3MemPrint() interface accessible to the debugger. Improve the performance and reduce the code size. (check-in: 62aece6677 user: drh tags: explain-improvements) | |
| 00:05 | Recompute the set of columns used for each table when the table is involved in query flattening. (check-in: a9bb71ba70 user: drh tags: trunk) | |
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2020-03-20
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| 20:54 | Allow "main" to be used to refer to the main database even after SQLITE_DBCONFIG_MAINDBNAME has been used to assign another alias. (check-in: 75c85ca32f user: dan tags: main-alias-fix) | |
| 20:18 | Avoid an undefined integer overflow in fts3 by detecting data structure corruption earlier. (check-in: 86e98ddc19 user: dan tags: trunk) | |
| 20:00 | Add the EXPLAIN TABLES syntax that uses SQLITE_STMTMODE_TABLELIST. Seems to work, but not well-tested. (Leaf check-in: e7343ce751 user: drh tags: sqlite3_stmt_mode) | |
| 17:49 | Further simplification of the EXPLAIN logic. Fix the test errors from the previous check-in. (check-in: 5eaba9af1c user: drh tags: sqlite3_stmt_mode) | |
| 16:13 | Revamp the EXPLAIN infrastructure to facilitate sqlite3_stmt_mode(). The currently code mostly works, but there are test failures. This is an incremental check-in. (check-in: e9e17e2125 user: drh tags: sqlite3_stmt_mode) | |
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2020-03-19
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| 21:17 | Initial code for a proposed new sqlite3_stmt_mode() API. This is an incomplete snapshot of a work-in-progress. (check-in: 3cf7537b5e user: drh tags: sqlite3_stmt_mode) | |
| 18:13 | Change the ESCAPE clause on the LIKE operator to override wildcard characters, in order to match the behavior of PosgreSQL. (check-in: 11e0844f71 user: drh tags: trunk) | |
| 17:27 | Fix an integer overflow problem with the dbstat virtual table that comes up when trying to analyze a corrupt database. (check-in: 1d64f4a8af user: drh tags: trunk) | |
| 15:57 | Fix a typo in a comment. No changes to code. (check-in: 3a51919ac2 user: drh tags: trunk) | |
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2020-03-18
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| 15:58 | Fix the build for when SQLITE_ENABLE_STAT4 is defined. (check-in: 8f0a8c2aa4 user: drh tags: approximate-analyze) | |
| 14:43 | Add the SQLITE_ANALYZE_LIMIT compile-time option (expected to be temporary) that sets a threshold at which ANALYZE starts to use approximations during the analysis process. (check-in: a773fd4698 user: drh tags: approximate-analyze) | |
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2020-03-17
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| 17:11 | Provide an estimated row count to stat_init() for STAT1 analysis. (check-in: 714419fe85 user: drh tags: approximate-analyze) | |
| 13:41 | Remove the SQLITE_OMIT_BTREECOUNT option. Btree count is required. (check-in: a9bfa47aee user: drh tags: approximate-analyze) | |
| 13:07 | Improved bytecode comments for the ANALYZE command. (check-in: c38ea4139d user: drh tags: approximate-analyze) | |
| 12:37 | Merge changes from trunk. (check-in: 93d710262e user: drh tags: approximate-analyze) | |
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2020-03-16
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| 18:52 | Fix handling of window functions in aggregate queries that have no GROUP BY clause. Also remove a faulty assert causing the error reported in [618156e3]. (check-in: 38e3dd389d user: dan tags: trunk) | |
| 03:07 | At the end of the right-hand table loop of a LEFT JOIN that uses an IN operator in the ON clause, put the OP_IfNoHope operator after the OP_IfNotOpen operator, not before, to avoid a (harmless) uninitialized register reference. Ticket [82b588d342d515d1] (check-in: 8b437b4726 user: drh tags: trunk) | |
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2020-03-13
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| 07:28 | Merge SQLITE_NOOP_UPDATE fix into this branch. (check-in: e2cc655e0d user: dan tags: begin-concurrent-report) | |
| 07:23 | Fix a typo causing SQLITE_NOOP_UPDATE builds to fail. (check-in: 1e2109fd33 user: dan tags: begin-concurrent-pnu) | |
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2020-03-12
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| 19:37 | Add link from begin_concurrent_report.md back to branch timeline. (check-in: 61869f8b48 user: dan tags: begin-concurrent-report) | |
| 17:54 | Remove stray comment characters at the end of an #ifdef that were accidently left in the previous check-in. (check-in: ea914bec81 user: drh tags: trunk) | |
| 17:28 | Fix comments and strengthen assert() statements associated with the OPFLAG_SEEKEQ and BTREE_SEEK_EQ flags. (check-in: 2317492138 user: drh tags: trunk) | |
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2020-03-11
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| 20:03 | Merge enhancements from trunk. (check-in: 4945a66237 user: drh tags: approximate-analyze) | |
| 19:56 | Do not factor out constant functions into the initialization section of a prepared statement, because even though they are constant, they can still throw exceptions. Instead, put such functions in an OP_Once block. This fixes ticket [3c9eadd2a6ba0aa5] and causes COALESCE() and CASE...END to be short-circuit. (check-in: c5f96a085d user: drh tags: trunk) | |
| 19:41 | Rename sqlite3ExprCodeAtInit() to sqlite3ExprCodeRunJustOnce(). Other changes to make the new code cleaner. Test cases added. (Closed-Leaf check-in: d7f1848997 user: drh tags: do-not-factor-functions) | |
| 19:30 | Add documentation notes and fix outstanding issues on this branch. (check-in: b288bbd1df user: dan tags: begin-concurrent-report) | |
| 17:58 | Do not factor out constant functions into the initialization section at the end of the prepared statement, be cause if they throw an exception, it will abort the statement even if the function is never called. Better to put constant functions in an OP_Once block. (check-in: 97a18a5cd7 user: drh tags: do-not-factor-functions) | |
| 16:46 | Support reporting of blob fields. (check-in: 724a4a844d user: dan tags: begin-concurrent-report) | |
| 02:04 | This variant to the fix for ticket [e0c2ad1aa8a9c691] uses fewer CPU cycles. (check-in: fb5a8a9edd user: drh tags: trunk) | |
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2020-03-10
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| 22:55 | Merge updates from trunk. (check-in: e05f743f61 user: drh tags: approximate-analyze) | |
| 21:14 | Fix test and other problems with reporting pages read and written. (check-in: 9ae970fdc1 user: dan tags: begin-concurrent-report) | |
| 19:55 | Fix problem in test script concreport.test. (check-in: 32d1b7210a user: dan tags: begin-concurrent-report) | |
| 19:24 | Enhanced detection logic for preventing the use of static schema expressions by code generating routines. (check-in: 5f60b527b9 user: drh tags: trunk) | |
| 19:23 | Prevent the read-only expressions held in the schema from being passed down into code generating subroutines where they might be changed. Pass a copy of the expression instead. (check-in: 2b750b0f74 user: drh tags: branch-3.31) | |
| 18:55 | Further changes to ensure that expressions held in table and index definitions do not get passed down into code generator logic where they might be modified. (check-in: f45f5de000 user: drh tags: trunk) | |
| 13:35 | Make a copy of the expression that defines a value of a generated column before sending it to the code generator routines. (check-in: 03d201c041 user: drh tags: trunk) | |
| 11:50 | Apply the correct affinity transformations when pulling values off of the sorter index used for GROUP BY. Ticket [e0c2ad1aa8a9c691] (check-in: 101f7dea75 user: drh tags: trunk) | |
| 02:57 | The sqlite3ExprCodeFactorable() routine should make a copy of non-factorable expressions, as they might be coming from a DEFAULT or generated column in a table constraint. (check-in: a2d6f108c5 user: drh tags: trunk) | |
| 01:24 | Background work for experiments trying to enhance ANALYZE so that it runs off of samples of the entire index and does not need to read the entire index. (check-in: 29d1cc5c36 user: drh tags: approximate-analyze) | |
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2020-03-09
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| 21:00 | Report on pages, as well as keys, read and written by BEGIN CONCURRENT transactions. (check-in: b661ccc88f user: dan tags: begin-concurrent-report) | |
| 18:26 | Cleaner separation of the STAT4-specific logic in the implementation of ANALYZE. (check-in: 3df07e5a9a user: drh tags: trunk) | |
| 15:39 | Enhancements to the ".import" command of the CLI. (check-in: cab1834cfc user: drh tags: trunk) | |
| 03:21 | Fix typos in RowSet. (check-in: 86465c08f4 user: pdr tags: trunk) | |
| 01:02 | Fix typos in the Lemon documentation. (check-in: 35f1f151ac user: drh tags: trunk) | |
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2020-03-08
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| 13:33 | Avoid a redundant NULL check (check-in: 25dc53f660 user: pdr tags: trunk) | |
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2020-03-07
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| 16:51 | Fix reporting cases related to UPDATE. And of WITHOUT ROWID tables. (check-in: d28d1739a6 user: dan tags: begin-concurrent-report) | |
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2020-03-06
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| 20:51 | Enhancement to log logical writes as well as reads. (check-in: 1c1f180eb6 user: dan tags: begin-concurrent-report) | |
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2020-03-05
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| 20:59 | Fix reporting for indexed range scans that extend past the end of the data. (check-in: ab458a319f user: dan tags: begin-concurrent-report) | |
| 19:00 | Merge trunk change [895bd20b29] into this branch. (Actually check-in date was 2020-05-18) (check-in: 507f972e91 user: dan tags: reuse-schema) | |
| 18:04 | Report an error if the main, or any other, database encoding is modified by an external process (perhaps using the backup API) after the db has been opened. (check-in: 895bd20b29 user: dan tags: trunk) | |
| 16:30 | Merge trunk enhancements into the reuse-schema branch. (Actual check-in date is 2020-05-18) (check-in: 9d068e1ef0 user: drh tags: reuse-schema) | |
| 16:13 | Change the sqlite3.pDfltColl (the default collating sequence for the database connection) so that it is the collating sequence appropriate for the database encoding, not the UTF8 collating sequence. This helps to ensure that the database encoding collation is always used, even for expressions that do not have an defined collating sequence. Ticket [1b8d7264567eb6fc]. (check-in: 4a5851893c user: drh tags: trunk) | |
| 14:19 | When printing the OP_CollSeq opcode for EXPLAIN listings, include the text encoding with the name of the collating sequence. (check-in: eb5c1b77d1 user: drh tags: trunk) | |
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2020-03-04
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| 19:17 | Fix cases to do with index scans. (check-in: 6ec5a8995f user: dan tags: begin-concurrent-report) | |
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2020-03-03
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| 21:01 | Extend begin_concurrent_report() so that it reports on accesses to non-intkey tables as well. (check-in: 427e2c9d95 user: dan tags: begin-concurrent-report) | |
| 20:48 | Fix a false-positive in the debugging logic that attempts to detect the use of uninitialized registers inside triggers. Ticket [c4c56482ced89d90] (check-in: 0463576b5d user: drh tags: trunk) | |
| 20:04 | Remove an invalid assert() on the debugging logic that checks to ensure that register values are not used after they go stale. Ticket [d165ad781b39d574]. (check-in: bd94d7d052 user: drh tags: trunk) | |
| 01:16 | Improved detection of corruption in the interior nodes of a segment btree in FTS3/4. (check-in: cc99447ac9 user: drh tags: trunk) | |
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2020-03-02
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| 21:00 | Fix reporting for some range scan cases. (check-in: ad961aee15 user: dan tags: begin-concurrent-report) | |
| 16:31 | Enhance the fuzzcheck test program so that it is able to simulate OOM errors in the same way that dbsqlfuzz does. (check-in: a65c8d4e26 user: drh tags: trunk) | |
| 15:05 | Merge latest begin-concurrent-pnu changes with this branch. (check-in: b1880b1899 user: dan tags: begin-concurrent-report) | |
| 01:50 | Fix a faulty assert() statement in the stale-register detection logic. Ticket [da5a09be6dabbf42]. (check-in: 219c296cc8 user: drh tags: trunk) | |
| 01:16 | Ensure that the NULL-scan pass counter is initialized when a ORDER BY NULLS LAST is used on the right table of a LEFT JOIN. Ticket [e12a0ae526bb51c7]. (check-in: 704bb9a39a user: drh tags: trunk) | |