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200 most recent check-ins using file src/mutex.h version 779d588e3b
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2024-09-18
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| 18:04 | Improvements to the scope of valueFromFunction(). (Leaf check-in: b021399a6e user: drh tags: branch-3.28) | |
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2024-06-07
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| 00:20 | Allow the query planner access to the argument of LIMIT even if that argument is a bound parameter. (check-in: 148d505ca0 user: drh tags: branch-3.28) | |
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2024-06-06
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| 16:06 | Better optimize queries that use parameters in the LIMIT clause. (Closed-Leaf check-in: b44f267671 user: drh tags: branch-3.28-var-in-limit) | |
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2024-04-02
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| 18:48 | Fix typos in comments. Provided ".wheretrace" debugging output for the interstage heuristic module. Do omit automatic index loops in the interstage heuristic. (check-in: 357d9513d2 user: drh tags: branch-3.28) | |
| 18:31 | Fix table-valued functions so that they will work as the right table in a LEFT JOIN. Ticket [2ae0c599b735d59e] (check-in: 1f97086d62 user: drh tags: branch-3.28) | |
| 11:54 | Add a heuristic in between the two solver() passes of the query planner that tries to prevent a very slow query plan in cases where the output row count estimate is imprecise. (check-in: 74b247d958 user: drh tags: branch-3.28) | |
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2023-11-29
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| 16:26 | Fix a duplicate assert() caused by the second cherrypick in the previous check-in. (check-in: f10d4fc4a8 user: drh tags: branch-3.28) | |
| 16:07 | Remove Window objects from the corresponding Select.pWin list when they are deleted, as they are, for example, when the ORDER BY clause is optimized out. (check-in: f9c6e6a710 user: drh tags: branch-3.28) | |
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2023-10-19
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| 21:05 | Ensure that when an ephemeral cursor is reopened with a second invocation of to OP_OpenEphemeral, the sequence counter is reset and the cache marked as stale. Fix for [9cdc5c46]. (check-in: d4bfa8d21a user: drh tags: branch-3.28) | |
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2023-09-15
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| 20:04 | Drop support for the view-scan optimization as it was causing multiple performance regressions. In its place, reduce the estimated row count for DISTINCT subsqueries by a factor of 8. (check-in: 796a65fa61 user: drh tags: branch-3.28) | |
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2023-02-26
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| 11:52 | In the [/info/7c2d3406000dc8ac|omit-unused-subquery-columns optimization], be sure to remove the EP_Skip and EP_Unlikely flags from the result set expressions that get nulled-out. dbsqlfuzz bf1d3ed6e0e0dd8766027797d43db40c776d2b15. Also fix an incorrect ".selecttrace" code block. (check-in: 83a7f13edb user: drh tags: branch-3.28) | |
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2023-02-16
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| 21:01 | Fix an #ifdef that uses a different macro name from the main branch. (check-in: ad6ac5d3e8 user: drh tags: branch-3.28) | |
| 19:04 | Back-port omit-unused-subquery-column enhancements into the 3.28 branch. (check-in: 57a4e91f43 user: drh tags: branch-3.28) | |
| 14:29 | Do not compute result columns of subqueries that are never used. Make those columns NULL instead. This optimization potentially resolves the enhancement request described by [baa5bb76c35a124c|ticket baa5bb76c35a124c]. (check-in: 0163b697dd user: drh tags: branch-3.28) | |
| 01:29 | Do not compute unused result columns of subqueries. This optimization will potentially resolve the performance optimization request of [baa5bb76c35a124c|ticket baa5bb76c35a124c]. (Closed-Leaf check-in: 0c21b6a5f8 user: drh tags: branch-3.26) | |
| 01:21 | Update test cases so that they work with TCL 8.7 and later. (check-in: e9b762de0e user: drh tags: branch-3.26) | |
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2023-02-15
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| 13:00 | Update the configure script so that it contains the correct version number. (check-in: a7cbf30808 user: drh tags: branch-3.26) | |
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2022-10-24
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| 13:50 | Improve the ability of the query planner to recognize covering indexes even on tables with more than 63 columns and where the index is over columns beyond the 63rd column. (check-in: 3d1992de47 user: drh tags: branch-3.28) | |
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2022-10-19
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| 11:22 | If a query uses an index where one or more of the columns of the index is an expression and if the corresponding expression is used elsewhere in the query, then strive to read the value of the expression out of the index, rather than recomputing it. This is the "Indexed Expression Optimizations". (check-in: 3da1032878 user: drh tags: branch-3.28) | |
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2022-09-27
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| 17:00 | Fix a potential division by zero error in this version of RBU that might occur if an external client checkpoints a wal file created by a suspended RBU process. (Leaf check-in: 73edd93adf user: dan tags: branch-3.14) | |
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2022-09-01
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| 10:41 | In the query planner, add a heuristic that will reduce the cost of a full table scan for a materialized view or subquery if the full scan is the outer-most loop. This is shown to speed up some queries. (check-in: e3754cc188 user: drh tags: branch-3.28) | |
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2022-08-10
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| 17:03 | Merge the branch-3.28a fixes into branch-3.28. (check-in: ba6bf33147 user: drh tags: branch-3.28) | |
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2022-08-09
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| 20:22 | Fix a rounding error caused by scalar->logarithm->scalar conversion when using stat4 data to estimate some range scans. (check-in: 68d86f2b20 user: drh tags: branch-3.28) | |
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2021-07-13
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| 15:30 | Remove two incorrect assert() statements from the logic used to derive column names and types from subqueries. This allows the SQL associated with CVE-2020-13871 (ticket [c8d3b9f0a750a529]) to be tested. (Closed-Leaf check-in: d2e6722037 user: dan tags: branch-3.28a) | |
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2021-07-12
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| 14:38 | Fix a defect in the query-flattener optimization identified by ticket [8f157e8010b22af0]. This fix is associated with CVE-2020-15358. (check-in: 9e001b635f user: dan tags: branch-3.28a) | |
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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: 263293f1e6 user: drh tags: branch-3.28) | |
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2020-10-02
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| 13:57 | Import further corner-case fixes for the in-scan-vs-index or OP_SeekScan optimization from trunk. (check-in: c144d6404f user: drh tags: branch-3.28) | |
| 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: ec37744c6e user: drh tags: branch-3.28) | |
| 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: 9a1cdf7e9c user: drh tags: branch-3.28) | |
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2020-09-30
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| 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: f07ac3fb38 user: drh tags: branch-3.28) | |
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2020-09-01
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| 02:02 | Improvements to the IN-early-out optimization so that it works more efficiently when there are two or more indexed IN clauses on a single table. (check-in: 49b7631e86 user: drh tags: branch-3.28) | |
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2020-08-31
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| 19:19 | An attempt to improve the performance of the IN-early-out optimization (see check-in [09fffbdf9f2f6ce3]) by avoiding unnecessary calls to the b-tree search algorithm in OP_IfNoHope when the index key is at hand and the same answer can be obtained by doing a quick key comparison. <b>Update:</b> Experiment did not work out. (Closed-Leaf check-in: 8301da31d0 user: drh tags: branch-3.28-in-early-out-fail) | |
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2020-08-17
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| 21:03 | When doing an UPDATE or DELETE using a multi-column index where only a few of the earlier columns of the index are useful for the index lookup, postpone doing the main table seek until after all WHERE clause constraints have been evaluated, in case those constraints can be covered by unused later terms of the index, thus avoiding unnecessary main table seeks. (check-in: 0ecda43371 user: dan tags: branch-3.28) | |
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2020-05-06
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| 18:46 | Provide the SQLITE_DEFAULT_LEGACY_ALTER_TABLE compile-time option. (check-in: b2325a6e1c user: drh tags: branch-3.28) | |
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2020-01-17
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| 15:33 | More restrictions on changes to shadow tables when in defensive mode. (check-in: b302b260ca user: drh tags: branch-3.28) | |
| 15:24 | Validate the type, name, and tbl_name fields of the sqlite_master table when loading the schema, unless writable_schema is engaged. (check-in: 3d13fbf248 user: drh tags: branch-3.28) | |
| 14:56 | Do not allow shadow tables to be dropped in defensive mode. (check-in: ad1f760f16 user: drh tags: branch-3.28) | |
| 14:30 | Import the 3.31.0-beta FTS3/4 code directly into the 3.28 branch, thus providing 3.28 with all the latest 3.31 fixes. FTS3 has not been enhanced to use any core functionality that was not already available in 3.23, so no modifications were made to FTS3 sources for this import. (check-in: be4269c624 user: drh tags: branch-3.28) | |
| 14:18 | Import all FTS3/4 enhancements and fixes that exist on the latest trunk (3.31.0-beta) that do not require extensive change to the SQLite core into the 3.22 branch. Basically, the 3.31.0 FTS3 sources are copied into 3.22.0, with minor changes to work around core enhancements that are not available in 3.22.0. (Leaf check-in: cbcbb1e5a9 user: drh tags: branch-3.22) | |
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2019-11-14
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| 15:10 | Minor documentation enhancements. No changes to code. (check-in: 6153f3aada user: drh tags: hard-heap-limit) | |
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2019-10-01
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| 21:31 | Remove references to test scripts analyzeA.test and analyzeB.test from permutations.test, since those test modules no longer exist. (check-in: 2394879698 user: drh tags: trunk) | |
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2019-09-30
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| 19:13 | The nodeReaderInit() function in FTS3 may not assume that the node is non-empty. (check-in: 361eb2f682 user: drh tags: trunk) | |
| 16:57 | Merge in the 3.30.0 beta 1 changes. (check-in: 0679612412 user: drh tags: reuse-schema) | |
| 16:49 | Merge in the 3.30.0 beta 1 enhancements. (check-in: ebf8872626 user: drh tags: begin-concurrent-pnu-wal2) | |
| 16:44 | Merge 3.30.0 beta 1 changes from trunk. (check-in: 918bd97d29 user: drh tags: wal2) | |
| 16:43 | Merge version 3.30.0 beta 1 changes from trunk. (check-in: ac4b644268 user: drh tags: begin-concurrent-pnu) | |
| 16:14 | Merge the 3.30.0 beta 1 changes from trunk. (check-in: a003818f70 user: drh tags: begin-concurrent) | |
| 16:13 | Merge the 3.30.0 beta 1 changes from trunk. (check-in: 9ce4c79171 user: drh tags: apple-osx) | |
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2019-09-28
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| 18:28 | Add missing comment to constant definitions. (check-in: 661a3789eb user: drh tags: trunk) | |
| 16:14 | Improvements to a comment. No code changes. (check-in: 1a3671c700 user: drh tags: trunk) | |
| 11:19 | In FTS3/4, the poslist end marker must be larger than any other possible poslist value, even on a corrupt poslist. (check-in: 752679aea5 user: drh tags: trunk) | |
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2019-09-27
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| 17:36 | Update requirement marks due to changes in documentation wording. (check-in: 326cdc16f4 user: drh tags: trunk) | |
| 16:33 | Allow compile-time options -DHAVE_GETHOSTUUID=0 and -DHAVE_GETHOSTUUID=1. (check-in: 3bcb9cc104 user: drh tags: trunk) | |
| 15:15 | Alternative implementation of the previous check-in which is testable. (check-in: 102ef64462 user: drh tags: trunk) | |
| 15:01 | Fix sqlite3ExprCompare() so that it ignores differences in the Expr.iTable field for IN operators, as otherwise it can lead to false negatives, which is usually harmless, but can cause problems for an assert() in the window function logic. (check-in: 6a204b192a user: drh tags: trunk) | |
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2019-09-26
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| 20:57 | More minor test file fixes. (check-in: 352878fe1c user: dan tags: trunk) | |
| 20:05 | Allow DROP TABLE to work on tables name "sqlite_parameters" just as it does with tables named "sqlite_stat%". Fix for the ".parameter clear" command in the shell. (check-in: e768179baa user: drh tags: trunk) | |
| 19:53 | Minor fix for test file indexexpr1.test. (check-in: 0ceab26f15 user: dan tags: trunk) | |
| 16:57 | New dbsqlfuzz cases added to test/fuzzdata8.db. (check-in: 49073b7003 user: drh tags: trunk) | |
| 16:08 | Test for an OOM condition in resolveAlias(). (check-in: 322eca7f6a user: drh tags: trunk) | |
| 15:53 | Fix a window-functions problem that could occur if an ORDER BY clause contains an alias for a window-function that is not a top-level expression. (check-in: 1cc6cf6407 user: dan tags: trunk) | |
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2019-09-25
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| 18:44 | Add a missing VdbeCoverage() macro. (check-in: 36d35dbd5a user: drh tags: trunk) | |
| 17:47 | Remove an unused variable. (check-in: a19884455b user: drh tags: trunk) | |
| 16:41 | Further simplifications to window-function code. (check-in: 5fe15c1d83 user: dan tags: trunk) | |
| 11:49 | In the previous check-in, the variable should be openMode, not openFlags. (check-in: 77b0db22d6 user: drh tags: trunk) | |
| 10:36 | In the unix VFS layer, do not attempt to chown() the journal to be the same as the database if running in 8+3 filename mode. Also, update the comments on the chown() attempt to be more precise. (check-in: ab853724a7 user: drh tags: trunk) | |
| 02:07 | Simplifications to the window-function code. (check-in: 489a1eb3aa user: drh tags: trunk) | |
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2019-09-24
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| 20:20 | Bug fixes for window frames of the form (... RANGE BETWEEN b PRECEDING AND a PRECEDING) or (... RANGE a FOLLOWING AND b FOLLOWING) where (a > b). (check-in: 040e196a8b user: dan tags: trunk) | |
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2019-09-23
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| 12:38 | Omit the sqlite3IntTokens array constant for a code simplification. (check-in: f907395ef5 user: drh tags: trunk) | |
| 11:55 | When a scalar subquery has a pre-existing "LIMIT X" then change it to "LIMIT X<>0" rather than just "LIMIT 1" so that if X is 0 the limit will still be zero. Ticket [99cd4807dc03f178]. Test cases in TH3. (check-in: 82e5dcf5c1 user: drh tags: trunk) | |
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2019-09-21
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| 18:49 | Fix a harmless unused variable warning in the test logic. (check-in: d7673a445f user: drh tags: trunk) | |
| 17:31 | Fix harmless compiler warnings. (check-in: 8ea1dc727d user: drh tags: trunk) | |
| 15:44 | Allow SQLite to omit redundant ORDER BY sorts in the case where a SELECT statement has GROUP BY and ORDER BY clauses that use the same expressions, even when the ORDER BY expressions are marked "DESC". (check-in: 20f7951bb2 user: dan tags: trunk) | |
| 13:34 | Add --multithread, --serialized, and --singlethread options to the speed-check.sh test script. (check-in: c17078af60 user: drh tags: trunk) | |
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2019-09-20
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| 21:12 | Simplify the fix in the previous commit. (check-in: 5ef64b0f55 user: dan tags: trunk) | |
| 20:52 | Fix a problem with queries containing a min() or max() function for which the FILTER clause excludes all rows. (check-in: b1d7e104e0 user: dan tags: trunk) | |
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2019-09-19
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| 13:51 | Fix an assert() in fts3 that could fail when accessing a corrupt database. (check-in: 601ce9532d user: dan tags: trunk) | |
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2019-09-18
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| 20:34 | Always clear the temporary register cache after coding a subroutine. (check-in: b6f2a7f9cd user: drh tags: trunk) | |
| 17:22 | Add extra tests for the handling of corrupt records in fts3. (check-in: 40e29a47d1 user: dan tags: trunk) | |
| 12:49 | Fix another potential "jump depends on uninitialized value" warning. (check-in: 633b214e9b user: drh tags: trunk) | |
| 11:46 | Fix a "jump depends on unititialized value" valgrind error in fts5 triggered by corrupt database records. (check-in: 6b6751cd90 user: dan tags: trunk) | |
| 11:16 | Fix an OOB read in the INSTR() function introduced yesterday by check-in [3fb40f518086c1e8] and detected by OSSFuzz. The test case is in TH3. (check-in: d49047c1b5 user: drh tags: trunk) | |
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2019-09-17
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| 21:28 | Do not change the OP_String8 opcode into OP_String until *after* any necessary encoding conversions are accomplished. Otherwise, a rerun of the prepared statement after an OOM can result in errors. Test case in TH3. (check-in: 8efd62594e user: drh tags: trunk) | |
| 13:30 | Test cases for ticket [587791f92620090e] (check-in: ca0e3a83a1 user: drh tags: trunk) | |
| 03:16 | Fix the instr() SQL function so that it makes a copy of its argument before changing the datatype, since the datatype affects processing. Also fix the sqlite3_value_text() routine so that it always works even for values obtained form sqlite3_value_dup(). Ticket [587791f92620090e] (check-in: 3fb40f5180 user: drh tags: trunk) | |
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2019-09-16
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| 20:16 | Improved type information display when tracing VDBE execution. (check-in: ee83d8e30d user: drh tags: trunk) | |
| 18:19 | Do not attempt the LIKE optimization for non-text columns and a pattern prefix of "-". Ticket [0f0428096f17252a] (check-in: 6fe0367f9a user: drh tags: trunk) | |
| 15:15 | Add recent interesting cases from dbsqlfuzz. (check-in: f06ef3d75d user: drh tags: trunk) | |
| 14:42 | Documentation updates for the SQLITE_DIRECTONLY flag. (check-in: 5beb6dc9bc user: drh tags: trunk) | |
| 12:35 | Merge all recent trunk enhancements into the reuse-schema branch. (check-in: 27eb223690 user: drh tags: reuse-schema) | |
| 12:29 | Bring the begin-concurrent-pnu-wal2 branch up to date with all the latest enhancements on trunk. (check-in: 15593bf3ad user: drh tags: begin-concurrent-pnu-wal2) | |
| 12:23 | Merge recent trunk enhancements into the wal2 branch. (check-in: da8bc97412 user: drh tags: wal2) | |
| 12:17 | Merge recent trunk enhancements into the begin-concurrent-pnu branch. (check-in: 54930b7e0a user: drh tags: begin-concurrent-pnu) | |
| 12:08 | Merge recent trunk enhancements into the begin-concurrent branch. (check-in: 93b9ef3f47 user: drh tags: begin-concurrent) | |
| 12:02 | Merge the latest changes from trunk into the apple-osx branch. (check-in: a95191deab user: drh tags: apple-osx) | |
| 05:34 | Fix a problem with processing CTEs that use a WINDOW clause. (check-in: ca564d4b5b user: dan tags: trunk) | |
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2019-09-14
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| 16:44 | Add the --no-rowids option to the ".recover" command. (check-in: 01d71b947a user: dan tags: trunk) | |
| 16:21 | Extra comments on fields of the Window object. (check-in: 3dbed16251 user: drh tags: trunk) | |
| 00:21 | Fix the windows inverse function on the JSON aggregates. (check-in: f464d847af user: drh tags: trunk) | |
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2019-09-13
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| 20:42 | Fix a problem with using json1 window functions with an EXCLUDE clause. (check-in: 4a1978814d user: dan tags: trunk) | |
| 18:59 | Fix the windowB test module so that it works even if SQLite is built without JSON support. (check-in: 807975c76b user: drh tags: trunk) | |
| 18:27 | Add the SQLITE_SUBTYPE flag, which may be passed to sqlite3_create_window_function() to indicate that the window function uses sqlite3_value_subtype() to check the sub-type of its arguments. (check-in: ba2ebc3a34 user: dan tags: trunk) | |
| 17:36 | Change the meaning of the SQLITE_SUBTYPE flag so that it indicates that the function may use sqlite3_value_subtype() on its arguments. (Closed-Leaf check-in: 7f424ec9a3 user: dan tags: window-functions-subtype-fix) | |
| 17:30 | Fix a typo in the carray extension header comment - the comment that serves as the documentation to this extension. (check-in: 658a42d363 user: drh tags: trunk) | |
| 17:05 | Change the meaning of the SQLITE_SUBTYPE flag so that it indicates that the user-defined function cares about the subtypes of its arguments. (Closed-Leaf check-in: af1bc20f50 user: dan tags: window-functions-subtype-fix2) | |
| 16:19 | Merge latest trunk changes with this branch. (check-in: 14ef754346 user: dan tags: window-functions-subtype-fix) | |
| 13:23 | Ensure that the idxStr for FTS5 is always zero-terminated. Fix for check-in [9d418a7a491761ee] (check-in: 090cd07d37 user: drh tags: trunk) | |
| 12:24 | Fix harmless compiler warnings. (check-in: a8927d14f8 user: drh tags: trunk) | |
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2019-09-12
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| 19:38 | Allow fts5 to filter on multiple MATCH clauses in a single scan. (check-in: 9d418a7a49 user: dan tags: trunk) | |
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2019-09-11
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| 15:25 | Fix typo for one instance of line number handling in the Lemon tool. (check-in: 980be1730d user: mistachkin tags: trunk) | |
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2019-09-10
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| 17:51 | Enhance treeview to show SOFT-COLLATE for TK_COLLATE operators that omit the EP_Collate flag. (check-in: a97804620a user: drh tags: trunk) | |
| 15:33 | Ensure the columns of views and sub-queries maintain their implicit collation sequences when the "push-down" optimization is applied. Fix for [18458b1a]. (check-in: 36997c4ade user: dan tags: trunk) | |
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2019-09-09
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| 20:17 | Ensure the columns of views and sub-selects in the FROM clause of a select are always assigned implicit collation sequences, just as table columns are. Fix for [a7debbe0]. (check-in: b9ec72203c user: dan tags: trunk) | |
| 19:49 | Ensure the columns of views and sub-selects in the FROM clause of a select are always assigned implicit collation sequences, just as table columns are. Possible fix for [a7debbe0]. (Closed-Leaf check-in: 1863b7bf12 user: dan tags: tkt-a7debbe0.) | |
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2019-09-07
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| 18:20 | Add the SQLITE_SUBTYPE flag, which can be passed to sqlite3_create_function() and similar to indicate to the core that a user function is likely to use sqlite3_result_subtype(). (check-in: 6aa438ce41 user: dan tags: window-functions-subtype-fix) | |
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2019-09-04
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| 06:56 | Fix handling of NULL, text and blob values in window queries that use "RANGE BETWEEN A FOLLOWING AND B FOLLOWING", or "B PRECEDING AND A PRECEDING", where A>B. (check-in: cb3e2be674 user: dan tags: trunk) | |
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2019-09-03
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| 19:40 | Fix a buffer overread that could occur when running fts5 prefix queries inside a transaction. (Leaf check-in: b54aa18b0f user: dan tags: branch-3.18) | |
| 19:29 | Fix a buffer overread that could occur when running fts5 prefix queries inside a transaction. (Leaf check-in: b584fd36f7 user: dan tags: branch-3.9) | |
| 18:43 | Fix a buffer overread that could occur when running fts5 prefix queries inside a transaction. (Leaf check-in: 0770363b30 user: drh tags: branch-3.19) | |
| 18:36 | Fix a buffer overread that could occur when running fts5 prefix queries inside a transaction. (check-in: 68b898381a user: drh tags: branch-3.22) | |
| 18:04 | Disable the undocumented rtreenode() SQL function that is only used for testing, except when doing a build that is specifically intended for testing. (check-in: 8452fd5499 user: drh tags: branch-3.22) | |
| 17:55 | Disable the undocumented rtreenode() SQL function that is only used for testing, except when doing a build that is specifically intended for testing. (check-in: 34cd2d929e user: drh tags: branch-3.19) | |
| 17:46 | Disable the undocumented rtreenode() SQL function that is only used for testing, except when doing a build that is specifically intended for testing. (check-in: 0a1cce496c user: drh tags: branch-3.18) | |
| 17:39 | Disable the undocumented rtreenode() SQL function that is only used for testing, except when doing a build that is specifically intended for testing. (check-in: 7b4583f932 user: drh tags: branch-3.9) | |
| 16:23 | Updates to the default settings in Makefile.linux-gcc. (check-in: 3044cf6917 user: drh tags: trunk) | |
| 14:27 | When we play games with COLLATE in order to commute an operator in the WHERE clause processing, be sure not to use the commuted operator to qualify a partial index, as insufficient COLLATE information is preserved to verify that the expression will correctly qualify the index. Ticket [767a8cbc6d20bd68] (check-in: 5351e920f4 user: drh tags: trunk) | |
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2019-09-02
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| 22:13 | Fix a bug introduced earlier today by check-in [88833a9c2849c959]. Ticket [29f635e0af71234b] (check-in: 6e7b4527d3 user: drh tags: trunk) | |
| 14:46 | Fix a potential crash in fts5 caused by using an auxiliary function on a "special" query like '*id' or '*reads'. (check-in: 9490683ae8 user: dan tags: trunk) | |
| 02:21 | When applying the IN_INDEX_NOOP optimization and the LHS has REAL affinity, also apply REAL affinity to each element of the RHS. Ticket [2841e99d104c6436]. (check-in: 88833a9c28 user: drh tags: trunk) | |
| 01:25 | Fix an obsolete comment that defines the meaning of one of the parameters to the sqlite3FindInIndex() subroutine. No changes to code. (check-in: 0c946f0846 user: drh tags: trunk) | |
| 00:58 | When computing an expression value for an index-on-expression or a CHECK constraint and the expressions uses a REAL table column, but the value of that column is an integer (in other words, when it is using the store-real-as-integer optimization) be sure to promote the value to real before evaluating the expression. Ticket [57af00b6642ecd68]. (check-in: 0658c16e31 user: drh tags: trunk) | |
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2019-09-01
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| 23:36 | Remove an obsolete paragraph from the OP_Column documentation. No code changes. (check-in: f6d8956cf8 user: drh tags: trunk) | |
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2019-08-31
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| 20:29 | Fix a harmless compiler warning. (check-in: 63c67a54b4 user: drh tags: trunk) | |
| 20:26 | Mark new VDBE branches never taken. (check-in: 83c2adffbf user: drh tags: trunk) | |
| 20:13 | Improvements to the algorithm that determines which SELECT in a sequence of nested SELECT statements that an aggregate function belongs to. This resolves an issue identified by dbsqlfuzz. (check-in: d768007473 user: drh tags: trunk) | |
| 17:14 | If a DELETE trigger fired by an UPDATE OR REPLACE statement deletes the row being updated, do not attempt to proceed with the original UPDATE operation. Fix for [d6a0fbc1]. (check-in: 4145b3e050 user: dan tags: trunk) | |
| 01:33 | Remove some affinity tests that became unreachable due to the prior change. (check-in: e2db1123fa user: drh tags: trunk) | |
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2019-08-30
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| 23:56 | When the affinity of a table column is INT or REAL, make the affinity of corresponding index columns NUMERIC. This increases the precision of index lookups for large numbers so that it matches the precision of ordinary comparison operators. Ticket [40812aea1fde9594] (check-in: e0d909c740 user: drh tags: trunk) | |
| 23:15 | Make sure OP_RealAffinity has been applied to all columns of type REAL in the excluded.* pseudo-table of an UPSERT. Ticket [5a3dba8104421320] (check-in: 67381daded user: drh tags: trunk) | |
| 21:52 | Improvements to VDBE tracing. No changes to code in normal deliverables. (check-in: 54553bf16f user: drh tags: trunk) | |
| 19:45 | Add test case to window8.test. Also fix an error in a comment in window.c. (check-in: 2925bfa597 user: dan tags: trunk) | |
| 18:02 | Back out the change at [47cd634c98b502d4] which was incorrect. Add a test case so that we don't accidently back out that change again. (check-in: 596ac2a4ea user: drh tags: trunk) | |
| 17:28 | Add further comments to window.c. (check-in: 900464567b user: dan tags: trunk) | |
| 16:46 | New test cases for window functions with RANGE BETWEEN and DESC NULLS FIRST. (check-in: f7002f86c7 user: drh tags: trunk) | |
| 16:14 | Fix a bug in RANGE window functions that use "ORDER BY <expr> DESC NULLS FIRST" as the window-frame ORDER BY clause. (check-in: 39b4cad4a5 user: dan tags: trunk) | |
| 16:00 | The expression "(X IS FALSE) IN (FALSE)" does not imply that X is NOT NULL. Ticket [f8f472cbc77ba9c9] (check-in: dd66134817 user: drh tags: trunk) | |
| 15:11 | The expression "(X IS FALSE) BETWEEN FALSE AND TRUE" does not implie that X is not NULL. Ticket [fba33c8b1df6a915] (check-in: 057fb8b180 user: drh tags: trunk) | |
| 13:07 | The expression "(x IS FALSE) IS FALSE" does not imply that X is not NULL. Ticket [a6408d42b9f44462] (check-in: 45ff2b1f26 user: drh tags: trunk) | |
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2019-08-29
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| 23:24 | Remove a faulty testcase() macro. (check-in: 80124ae552 user: drh tags: trunk) | |
| 21:16 | Improve vdbe branch coverage of NULLS LAST code. (check-in: e8e9f77d52 user: dan tags: trunk) | |
| 19:34 | Fix other problems similar to ticket [c0390363]. (check-in: 96ff2ba9c4 user: dan tags: trunk) | |
| 16:48 | Add a missing VdbeCoverage() macro. (check-in: 33da6092d3 user: drh tags: trunk) | |
| 16:17 | Remove an unreachable branch in the NULLS LAST logic of RANGE window functions. (check-in: 47cd634c98 user: drh tags: trunk) | |
| 15:50 | Fix another case where SQLite assumes that if "~(? AND FALSE)" is true, "?" must be non-null. (check-in: 616f5663b3 user: dan tags: trunk) | |
| 15:06 | Avoid assuming that for "~ (? AND FALSE)" to be true, "?" must not be NULL, just as we do for "NOT (? AND FALSE)". Fix for ticket [c0390363]. (check-in: 84ae41fd2f user: dan tags: trunk) | |
| 14:25 | Fix a potential buffer overrun in fts5 caused by corrupted database records. (check-in: c465d0eb47 user: dan tags: trunk) | |
| 00:27 | Improve Lemon so that it enlarges some of its tables slightly in order to avoid having to index range checks on table lookups for a performance increase. (check-in: 4be6a23a18 user: drh tags: trunk) | |
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2019-08-28
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| 11:49 | Fix an unreachable branch in sqlite3ParserFallback() (Closed-Leaf check-in: e059178b47 user: drh tags: lemon-optimization) | |
| 11:31 | Further improvements to parser speed by enlarging lookup tables to eliminate the need to do range checking on the index prior to lookup. (check-in: 47d3e091ae user: drh tags: lemon-optimization) | |
| 02:09 | Increase the size of the yy_lookahead table so that it is never necessary to down bounds checking on the index. (check-in: bafd872398 user: drh tags: lemon-optimization) | |
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2019-08-27
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| 19:59 | Add support for "ORDER BY ... NULLS FIRST" and "ORDER BY ... NULLS LAST". Use this to fix ticket [f8a7060e]. (check-in: 94085fb3e7 user: dan tags: trunk) | |
| 17:59 | The ALWAYS() added by the previous check-in was incorrect. Take it back out. (check-in: 336235db2b user: drh tags: trunk) | |
| 17:28 | Add ALWAYS() to an always true conditional that results from the previous check-in. Add a test case for ticket [dbaf8a6820be1ece] to supplement those already checked into TH3. (check-in: aff2098047 user: drh tags: trunk) | |
| 17:01 | Omit the "x IN (y)" to "x==y" optimization of check-in [e68b427afbc82e20] (and ticket [e39d032577df6942]) as it causes difficult affinity problems as demonstrated by ticket [dbaf8a6820be1ece] and the original assertion fault is no longer a factor due to countless other changes of the previous 5 years. (check-in: 7f5168a76a user: drh tags: trunk) | |
| 10:05 | If a TEMP TRIGGER references an auxiliary schema, and that auxiliary schema is detached, move the trigger to reference the TEMP schema before completing the detach, so that the trigger does not hold a dangling schema pointer. Ticket [ac8dd4a32ba4322f] (check-in: 069c2f4c61 user: drh tags: trunk) | |
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2019-08-26
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| 20:41 | Merge in recent fixes from trunk. (Closed-Leaf check-in: ad816d01d4 user: drh tags: nulls-last) | |
| 14:57 | Tweak the shell tool ".recover" command so that it can recover rows that consist of a rowid and no fields. (check-in: 279ac7fdec user: dan tags: trunk) | |
| 14:18 | Improved detection of number of column mismatch for vector assignment in UPDATE statements. Ticket [78acc9d40f0786e8] (check-in: bd4bda73df user: drh tags: trunk) | |
| 13:45 | Fix typo in a comment. No code changes. (check-in: d0cc06d8a3 user: drh tags: trunk) | |
| 12:50 | Enforce 80-character line discipline in the CLI. Minor improvements to the CLI built-in help. (check-in: 9690013a00 user: drh tags: trunk) | |
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2019-08-24
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| 21:02 | Minor performance improvement for balance_nonroot(). (check-in: d7434cae3e user: dan tags: trunk) | |
| 17:11 | Fix a potential buffer overrun in fts5 caused by corrupt database records. (check-in: 156d612800 user: dan tags: trunk) | |
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2019-08-23
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| 23:05 | Fix the built-in edit() SQL function in the CLI so that it works with zero-length blobs. (check-in: e324901286 user: drh tags: trunk) | |
| 21:11 | Attempt to parse the NULLS LAST clause more efficiently. A few cycles were saved, but at the expense of more code. And there is a bug was introduced somewhere. Not worth continuing down this line. (Closed-Leaf check-in: 12d2cf8871 user: drh tags: dead-end) | |
| 20:33 | Move some things in parse.y so that TK_COLUMN and TK_AGG_COLUMN are assigned the same values as they are on trunk for a very small speedup. (check-in: d26fdfa3bc user: dan tags: nulls-last) | |
| 17:09 | Revise the VDBE comments for NULL-scan so that they also work make sense when reading a NULLS FIRST plan. (check-in: bfe793780f user: drh tags: nulls-last) | |
| 17:00 | Additional simplifications of the WHERE loop code generator logic for NULLS LAST. (check-in: 1383680d92 user: drh tags: nulls-last) | |
| 16:12 | Simplification of the WHERE loop code generator for NULLS LAST saves a few CPU cycles and about a hundred bytes of code space. (check-in: e3ed2f496f user: drh tags: nulls-last) | |
| 13:32 | Invert the meaning of the regBignull flag so that it is 1 when doing the normal scan and 1 when scanning nulls. This enables the re-do jump at the bottom of the loop to be coded with a single OP_IfNotZero opcode, rather than a sequence of OP_If, OP_Integer, OP_Goto. (check-in: bf875e1a25 user: drh tags: nulls-last) | |
| 13:08 | Extra VDBE comments in the NULLS LAST logic provide landmarks to help understand the EXPLAIN output. (check-in: 649b08ead5 user: drh tags: nulls-last) | |
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2019-08-22
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| 21:13 | Add additional VDBE coverage macros. (check-in: d3531f5be7 user: drh tags: nulls-last) | |
| 19:35 | Merge fixes from trunk. Also fix a reference to the KeyInfo.aSortOrder field, which should now be KeyInfo.aSortFlags (check-in: 63e625c8eb user: drh tags: nulls-last) | |
| 16:38 | Fix the likely(), unlikely(), and likelihood() functions so that they have no affinity, just like any other function. Ticket [7e07a3dbf5a8cd26] (check-in: 44578865fa user: drh tags: trunk) | |
| 11:11 | Fix a false-positive in sqlite3ExprNeedsNoAffinityChange(). Ticket [ac184eb571d5e6e0] (check-in: e62eddbb04 user: drh tags: trunk) | |
| 00:53 | Fix the OP_SeekGE, OP_SeekGT, OP_SeekLE, and OP_SeekLT opcodes so that they preserve the datatype of the value in the register used as the key. Ticket [d9f584e936c7a8d0] (check-in: 81b9f0f550 user: drh tags: trunk) | |
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2019-08-21
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| 19:58 | Add missing VdbeCoverage() macros to new code. (check-in: b1cbcdc6eb user: dan tags: nulls-last) | |
| 17:46 | Disable broken test case in expert1.test. (check-in: 73e30c2e92 user: dan tags: nulls-last) | |
| 15:41 | Update this branch with latest trunk changes. (check-in: 6153bcf41a user: dan tags: nulls-last) | |
| 14:54 | Avoid assuming that "column IS ?", where column is declared UNIQUE, matches only a single row (as "?" might be NULL). Fix for [b8689402]. (check-in: d02490a2f0 user: dan tags: trunk) | |
| 11:31 | Fix a broken assert() in the fts3 snippet code that was failing for queries containging more than 64 phrases. (check-in: 4c01e0170e user: dan tags: trunk) | |
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2019-08-20
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| 20:09 | Further tests for the special null-handling on this branch. (check-in: 0dbbb51f4d user: dan tags: nulls-last) | |
| 19:11 | Fix a problem with fts5 "ORDER BY rank" queries when the fts5 table name requires quoting. (check-in: 00e9a8f273 user: dan tags: trunk) | |
| 17:51 | Add tests for sort-by-index cases that use IN() and non-default NULL handling. (check-in: 09d660ecde user: dan tags: nulls-last) | |
| 17:14 | Bring the hard-heap-limit branch up-to-date with trunk. (check-in: 9b14eb7754 user: drh tags: hard-heap-limit) | |
| 15:47 | Do not pass ORDER BY clauses with non-standard NULL handling to virtual table implementations. (check-in: a9a82ee88d user: dan tags: nulls-last) | |
| 14:43 | Fix a segfault that could occur following an OOM while processing a SELECT statement for which one or more of the expressions in the window frame declaration are themselves sub-selects that use window functions. (check-in: 75aec4fc88 user: dan tags: trunk) | |
| 13:49 | Add the new sqlite3_drop_modules() interface to the loadable extension mechanism. (check-in: 658bd51623 user: drh tags: trunk) | |
| 11:43 | Retain the affinity of an expression in a WHERE clause when it is transformed to a reference to an index column on the same expression. Fix for [f043b113]. (check-in: 511da08156 user: dan tags: trunk) | |
| 02:19 | Fix a typo and a harmless compiler warning. (check-in: ec4c63e00c user: mistachkin tags: trunk) | |
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2019-08-19
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| 20:44 | Add the sqlite3_drop_modules() interface. (check-in: e2c6fed8f8 user: drh tags: trunk) | |