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200 most recent check-ins using file test/tt3_checkpoint.c version 9e75cf7c

2023-11-29
16:26
Fix a duplicate assert() caused by the second cherrypick in the previous check-in. (Leaf check-in: f10d4fc4 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: f9c6e6a7 user: drh tags: branch-3.28)
2023-10-19
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: d4bfa8d2 user: drh tags: branch-3.28)
2023-09-15
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: 796a65fa user: drh tags: branch-3.28)
2023-02-26
11:52
In the 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: 83a7f13e user: drh tags: branch-3.28)
2023-02-16
21:01
Fix an #ifdef that uses a different macro name from the main branch. (check-in: ad6ac5d3 user: drh tags: branch-3.28)
19:04
Back-port omit-unused-subquery-column enhancements into the 3.28 branch. (check-in: 57a4e91f 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 [ticket baa5bb76c35a124c]. (check-in: 0163b697 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 [ticket baa5bb76c35a124c]. (Closed-Leaf check-in: 0c21b6a5 user: drh tags: branch-3.26)
01:21
Update test cases so that they work with TCL 8.7 and later. (check-in: e9b762de user: drh tags: branch-3.26)
2023-02-15
13:00
Update the configure script so that it contains the correct version number. (check-in: a7cbf308 user: drh tags: branch-3.26)
2022-10-24
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: 3d1992de user: drh tags: branch-3.28)
2022-10-19
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: 3da10328 user: drh tags: branch-3.28)
2022-09-27
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: 73edd93a user: dan tags: branch-3.14)
2022-09-01
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: e3754cc1 user: drh tags: branch-3.28)
2022-08-10
17:03
Merge the branch-3.28a fixes into branch-3.28. (check-in: ba6bf331 user: drh tags: branch-3.28)
2022-08-09
20:22
Fix a rounding error caused by scalar->logarithm->scalar conversion when using stat4 data to estimate some range scans. (check-in: 68d86f2b user: drh tags: branch-3.28)
2021-10-26
10:02
Fix an RBU problem with restarting an update after the *-oal file is already larger than 4GiB. (Leaf check-in: e4662603 user: drh tags: branch-3.36)
2021-08-11
18:56
Fix an RBU problem with restarting an update after the *-oal file is already larger than 4GiB. (Leaf check-in: 56869f54 user: dan tags: rbu-replace-hack)
18:44
If the special "sqlite_rbu_replace_hack" table is present in an RBU database, use REPLACE instead of INSERT when writing index entries to imposter tables. (check-in: 4b73e151 user: dan tags: rbu-replace-hack)
2021-07-26
01:35
Manual merge of new .connection shell command (check-in: 0d41f7f9 user: larrybr tags: cli_extension)
2021-07-19
14:00
In defensive mode, allow statements that write to shadow tables to be prepared from with virtual-table xSync() calls. (check-in: c8601d83 user: dan tags: trunk)
03:38
Fix minor spacing issues in the MSVC makefile. (check-in: d78c272b user: mistachkin tags: trunk)
03:37
Minor enhancements to new OSTRACE messages. (check-in: 3249a6a3 user: mistachkin tags: win-blocking-locks)
2021-07-16
22:43
Try to omit the ORDER BY clause in subqueries if doing so does not change the result in any way. See Forum post 2d76f2bcf65d256a for details and history. (check-in: 85ddaf1b user: drh tags: trunk)
20:16
Minor comment improvements. (Closed-Leaf check-in: 6854b591 user: drh tags: omit-subquery-order-by)
18:30
Experiment with having SQLITE_ENABLE_SETLK_TIMEOUT builds on unix use a condition variable to wait for wal locks held by other threads. (check-in: 4a9f5ce7 user: dan tags: unix-timed-wait-exp)
17:11
De-typo sqlite3_expanded_sql() doc (check-in: 56b0f541 user: larrybr tags: trunk)
17:04
Modify the generate_series() table-valued functions so that its first argument (the START value) is required. Throw an error if that argument is not supplied. In this was the series.c loadable extension can be used as a demonstration of how to code an xBestIndex function to require certain parameters. Compile with -DZERO_ARGUMENT_GENERATE_SERIES to obtain the legacy behavior. (check-in: 459d85a2 user: drh tags: trunk)
15:30
Fix the "main.mk" makefile so that "series.c" is a dependency of "shell.c". (check-in: ff959917 user: drh tags: trunk)
01:19
Get the "omit ORDER BY in FROM-clause subqueries" optimization working for the core test cases. (check-in: e31c5888 user: drh tags: omit-subquery-order-by)
2021-07-15
23:34
By default, do not emit #line directives in the amalgamation. (check-in: bacfa936 user: mistachkin tags: trunk)
23:12
Initial work on blocking locks for the Win32 VFS. Various other small enhancements. (check-in: 584c2425 user: mistachkin tags: win-blocking-locks)
19:29
Attempt to omit ORDER BY clauses from FROM-clause subqueries if those ORDER BY clauses do not affect the output. See forum thread 2d76f2bcf65d256a for discussion. This can help the query flattener in some cases, resulting in faster query plans. The current implemention does not always work. (check-in: ef97c3e7 user: drh tags: omit-subquery-order-by)
16:39
Change references to the schema table in sqlite3_analyzer to the new SQLITE_SCHEMA name. (check-in: 3beb77d6 user: drh tags: trunk)
2021-07-14
21:18
Fix a use-after-free error in ioerr.test caused by an error in test code. (check-in: 1594056a user: dan tags: trunk)
19:35
Enhance the Windows VFS to recognize SQLITE_FCNTL_LOCK_TIMEOUT and make the value set there available to the winLockFile() function. (check-in: 954b5d61 user: drh tags: win-blocking-locks)
2021-07-13
22:49
Enhance comments pertaining to the interface linkage / calling convention macros. (check-in: c378e992 user: mistachkin tags: trunk)
21:59
Further revisions to #line handling for amalgamation builds. (check-in: 9a843212 user: mistachkin tags: trunk)
20:55
Get correct #line tags into amalgamation for other builds too. (check-in: 999eb800 user: larrybr tags: trunk)
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: d2e67220 user: dan tags: branch-3.28a)
11:59
Get #line tags into amalgamation, subject to configure. (check-in: 5d81b598 user: larrybr tags: trunk)
11:55
Merge from trunk, rename tool option for its effect (Leaf check-in: 9327f73c user: larrybr tags: line_tags)
11:30
Do not attempt to run Tcl sessions tests unless both SQLITE_ENABLE_PREUPDATE_HOOK and SQLITE_ENABLE_SESSIONS are defined. (check-in: 385db794 user: dan tags: trunk)
01:45
Amalgamation has #line directives by default. Minor mksqlite3c.tcl changes (check-in: ba3eff71 user: larrybr tags: line_tags)
2021-07-12
15:00
Fix a defect in the query-flattener optimization identified by ticket [8f157e8010b22af0]. This fix is associated with CVE-2020-15358. (Leaf check-in: bcd014c4 user: dan tags: branch-3.32a)
14:38
Fix a defect in the query-flattener optimization identified by ticket [8f157e8010b22af0]. This fix is associated with CVE-2020-15358. (check-in: 9e001b63 user: dan tags: branch-3.28a)
2021-07-11
12:58
Much self-doc improvement for shell.c generation. Misleading error message fixed. (check-in: 7738ce1b user: larrybr tags: cli_extension)
2021-07-10
14:48
.tables fixup for legacy behavior. (check-in: 827ea61d user: larrybr tags: cli_extension)
03:42
Migration to dispatched meta-commands done (check-in: ac4267da user: larrybr tags: cli_extension)
2021-07-09
23:12
Clarify comment on sqlite3.h's interface decaration macros. (check-in: 7cb09aef user: larrybr tags: trunk)
16:00
Remove disused linkage macros. (Leaf check-in: f14d3571 user: drh tags: disused-link-macros)
14:59
Fix an assert() that might fail if sqlite3_create_function_v2() is invoked with NULL xStep and xFinal callbacks and a non-NULL xDestroy. (check-in: ab1550a6 user: dan tags: trunk)
13:52
Enhance the sqlite3_create_function() interfaces to assume a value of SQLITE_UTF8 is presented with a nonsense value for the preferred encoding. This is undocumented behavior added for robustness. (check-in: c1bb5cff user: drh tags: trunk)
11:52
Add the usual "#ifdef __cplusplus" magic to header file ext/misc/carray.h. Also update carray.h/carray.c to use SQLITE_API in the usual way. (check-in: 0f97c2a4 user: dan tags: trunk)
00:12
Allow CLI shell build to #include same user-specified header as library build. (check-in: eb8af9a4 user: larrybr tags: trunk)
2021-07-08
23:35
Rename optional SQLITE_CUSTOM_INC define to SQLITE_CUSTOM_INCLUDE. (check-in: 060aec37 user: mistachkin tags: trunk)
22:12
Allow library build to #include a user-specified header. (check-in: 71e6490b user: larrybr tags: trunk)
18:29
Preserve and return to the user any error message returned by a failed xConnect() call on an eponymous virtual table that prevents a query from being compiled. (check-in: bbbbeb59 user: dan tags: trunk)
12:12
Fix an issue with the SQLite Expert extension when a column has no collating sequence. Forum post 78165fa250. (check-in: b1e0c22e user: drh tags: trunk)
2021-07-07
19:44
Fix a harmless compiler warning in the "fuzzcheck" test program. (check-in: 8c432642 user: drh tags: trunk)
19:40
Fix a harmless compiler warning - duplicate local variable named "pRHS". (check-in: 5bc05faf user: drh tags: trunk)
18:43
General cleanup of mkshellc.tcl, + help and options, decruft (check-in: 8bdd5fbf user: larrybr tags: cli_extension)
16:48
Follow-up to [68db1ff9c44fa9c3]: The number of registers needed by PRAGMA foreign_key_check was increased too late for an assert() deep down inside of sqlite3ExprCode(). So move the size increase a little earlier. Forum post 79c9e4797d. (check-in: 7072404a user: drh tags: trunk)
15:52
Fix a recently introduced segfault that might occur if a sub-select were used as a term on the RHS of an IN(...) operator for which the LHS is a row-value. (check-in: f586c06a user: dan tags: trunk)
13:53
Improve the error message in cases where there is a row-value on the LHS of an IN() operator, the RHS is a list (not a sub-select) and at least one element of the list is not a row-value with the correct number of elements. (check-in: 6b22f4e7 user: dan tags: trunk)
11:51
Instead of disallowing writes to fts5 tables if there are fts5vocab cursors open on them (commit [c49a6ed7]), abort any fts5vocab queries if the on-disk structure of the fts5 table changes. (check-in: 9dbdc900 user: dan tags: trunk)
2021-07-06
20:44
Handle "<vector> IN (<vector>, <vector> ...)" in the same way as "<vector> IN (VALUES(<vector>, <vector>, ...)". (check-in: 981d230e user: dan tags: trunk)
15:47
Create new branch named "branch-3.36" (check-in: 5eea151d user: larrybr tags: branch-3.36)
02:07
More commands dispathed. Dispatch translation parameterized. (check-in: 372e3241 user: larrybr tags: cli_extension)
2021-07-05
19:01
Do not allow writes to an fts5 table if there are any open fts5vocab cursors. (check-in: c49a6ed7 user: dan tags: trunk)
18:37
Add the ATOMIC_INTRINSICS compile-time output output. Move sqlite3Int.h in front of ctime.c so that default values that are not overridden are shown in PRAGMA compile-time option output. (check-in: e3069526 user: drh tags: trunk)
17:15
Revert [5204c2c4a7b73a64], restoring the old pre-processor logic for determining the availability of the __atomic_store_n()/__atomic_load_n() primitives. (check-in: e690abb9 user: dan tags: trunk)
11:27
Allow sub-queries in the FROM clause of an UPDATE...FROM statement to access the object being updated without using an alias, as is required in the parent query. (check-in: 740cb430 user: dan tags: trunk)
02:40
Improved rebustness in sqlite3ExprListDup() when it contains a vector assignment from an UPDATE where the initial term is omitted. This can happen during a UNION ALL query flattening while processing a virtual table update in which the first term of the vector is repeated. Forum post 16ca0e9f32. (check-in: 2547cfe3 user: drh tags: trunk)
01:11
Ensure that TK_SELECT_COLUMN Expr nodes always have their iTable field set to to the number of columns in the vector. This is not strictly necessary. It just simplifies the state description and make the code easier to reason about. (check-in: 026f08d4 user: drh tags: trunk)
00:07
Fix an incorrect comment on testcase misc1-27.0. No changes to code. (check-in: 49829ae3 user: drh tags: trunk)
2021-07-04
22:38
Streamline most common command definition (check-in: dd76b41a user: larrybr tags: cli_extension)
22:33
Enhance the treeview debugging mechanism so that it correctly deals with TK_ROW expression nodes. (check-in: e87fdb65 user: drh tags: trunk)
2021-07-03
19:20
Create infrastructure for dynamic shell extension. (check-in: 5e7e0d4e user: larrybr tags: cli_extension)
18:57
Fix a (harmless) typo in a comment. No code changes. (check-in: d2b9b8da user: drh tags: trunk)
02:55
In the PRAGMA foreign_key_check, ensure that sufficient registers are allocated for the virtual machine, even if one or more foreign keys reuses the same column multiple times and has more columns than the table it is part of. Forum post a6b0c05277. (check-in: 68db1ff9 user: drh tags: trunk)
2021-07-02
12:25
Put ALWAYS() on a branch that is always true due to [d4097364c511709b]. Fix a testcase precondition associated with the same check-in. (check-in: 55e2fbeb user: drh tags: trunk)
12:08
Fix a harmless assertion fault discovered by OSSFuzz. The assertion fault is harmless because the assert() checks a condition that that is harmless if false and the assert() is disabled in production builds. (check-in: 79443aab user: drh tags: trunk)
2021-07-01
18:19
Allow unqualified "rowid" references to be used in join queries, provided that only one of the source objects has a rowid. Forum post ab5b077c32636e49 (check-in: d4097364 user: dan tags: trunk)
16:57
Import the updated nmakehlp.c file used by the TCL Extension Architecture (TEA) builds in the amalgamation tarballs. Forum post 5a5001f20a. (check-in: 595bf95b user: drh tags: trunk)
2021-06-30
14:04
Fix a memory leak in fts5 that could occur when processing a query containing multiple classes of error. (check-in: 7c279670 user: dan tags: trunk)
12:11
Fix an assert() in fts5 that might fail when dealing with corrupt records. (check-in: 9e760e25 user: dan tags: trunk)
11:53
Do not enforce the SQLITE_LIMIT_FUNCTION_ARG limit for internally generated SQL. This prevents problems with statements like ALTER TABLE if the function argument limit is set too low. Forum post 17735aa21f3ddab2. (check-in: 763fdec5 user: drh tags: trunk)
2021-06-28
15:25
When generating data for a RETURNING clause, avoid assuming cursor number 0 is available for use. (check-in: 4b2c59ac user: dan tags: trunk)
2021-06-25
14:48
The OP_ReopenIdx opcode should clear the cursor if the cursor is being reused. This prevents leaving the cursor in an initialized state which could cause problems for a subsequent OP_SeekScan opcode. Fix for ticket [6dcbfd11cf666e21] and the OP_SeekScan optimization of check-in [4a43430fd23f8835]. (check-in: d4bf5243 user: drh tags: trunk)
11:21
Remove a redundant "ANALYZE" line from the ".fullschema" output. (check-in: 7b47f420 user: drh tags: trunk)
11:14
Fix a bug in the ".fullschema" dot-command of the CLI brought to light by check-in [a2ddb89b206c1387] - raising an error on at attempt to access the rowid of a subquery or view. (check-in: 36875827 user: drh tags: trunk)
00:25
Document sqlite3_wal_hook() return. (check-in: 8acaf796 user: larrybr tags: trunk)
2021-06-24
18:23
Allow the SQLITE_OPEN_EXCLUSIVE flag in sqlite3_open(). Return the SQLITE_CANTOPEN_EXISTS extended code to indicate that the open failed because the database already exists. (check-in: d091150f user: drh tags: trunk)
2021-06-23
17:41
Make conditional nature of sqlite3_normalized_sql() better known. (check-in: 0e0ece71 user: larrybr tags: trunk)
16:07
Fully incorporate *_changes64() API improvement. (check-in: 6699a2f6 user: larrybr tags: trunk)
11:39
Show CROSS JOINs in the TreeView debuggingn output. (check-in: 72e09b6c user: drh tags: trunk)
11:12
Fix a problem handling ORDER BY terms of the form "ORDER BY likely(<integer>)" within window frames. (check-in: 710f75b9 user: dan tags: trunk)
2021-06-22
23:30
This is another alternative fix to the covering index on WHERE_MULTI_OR in a LEFT JOIN problem that is fixed on trunk nearby. In this alternative, covering indexes are simply disabled for WHERE_MULTI_OR on a LEFT JOIN. This might have run-time impact on some obscure queries. This patch is saved for historical reference only. (Closed-Leaf check-in: 66856410 user: drh tags: multi-or-covidx-fix3)
23:27
This is an alternative fix to the covering index on WHERE_MULTI_OR in a LEFT JOIN problem that is fixed nearby. This one works by having the OP_NullRow opcode create the index if it does not already exist. That is slightly more complex. This patch is saved for historical reference only. (Closed-Leaf check-in: 956bafb6 user: drh tags: multi-or-covidx-fix2)
23:24
When an index is used by all branches of the WHERE_MULTI_OR optimization and becomes a covering index, make sure the index has been created prior to NULLing it in the OP_NullRow opcode of a LEFT JOIN. See forum post 0575376e07. The covering-index for WHERE_MULTI_OR optimization was added by [62678be3df35cdcb]. Test cases are in the orindex01.test module of TH3. (check-in: 787c76a8 user: drh tags: trunk)
18:32
Add the sqlite3_changes64() and sqlite3_total_changes64() API functions. (check-in: 48fdec22 user: dan tags: trunk)
18:06
Fix a problem causing sqlite3_changes() to return an incorrect value following a "DELETE FROM tbl" command on an intkey table (because internal b+tree cells were being included in the count). (check-in: f662ff47 user: dan tags: trunk)
14:59
Ensure that the cell array used in balance_nonroot() is always large enough, even if the pages being balanced are corrupt. (check-in: 53f64e83 user: dan tags: trunk)
2021-06-20
22:52
Load recent dbsqlfuzz cases into test/fuzzdata8.db. (check-in: a766bba0 user: drh tags: trunk)
22:49
Remove a NEVER() that is reachable by a corrupt database. dbsqlfuzz 8456a0f88e39a49fb675d8f77394979ebb2a03c1. Test case in TH3. (check-in: 1c41e86f user: drh tags: trunk)
22:17
Do not allow an SQLITE_CORRUPT error to mask a prior SQLITE_IOERR in balance_nonroot(). dbsqlfuzz 5e1c86e7f18023f2b9abe3429977d7ea726f50d8 (check-in: 50e81876 user: drh tags: trunk)
2021-06-19
20:20
Remove unnecessary (redundant) variable initialization from sqlite3BtreeInsert() for a small size reduction and performance increase. (check-in: 70d18364 user: drh tags: trunk)
18:35
The previous check-in is a significant change to btree, so go ahead and increment the version number for the next development cycle. (check-in: 2eb66970 user: drh tags: trunk)
18:32
Split the sqlite3BtreeMovetoUnpacked() routine into two separate routines sqlite3BtreeTableMoveto() and sqlite3BtreeIndexMoveto(), since we usually know the type of btree in advance. This results in less branching and better performance. (check-in: 3b0d34e5 user: drh tags: trunk)
2021-06-18
18:36
Version 3.36.0 (check-in: 5c9a6c06 user: drh tags: trunk, release, version-3.36.0)
2021-06-17
17:44
Merge recent trunk changes into branch-concurrent-pnu-wal2 via that wal2 branch. (check-in: 2ff7e562 user: drh tags: begin-concurrent-pnu-wal2)
17:38
Merge recent trunk enhancements into begin-concurrent-report via begin-concurrent-pnu. (check-in: 204dbc15 user: drh tags: begin-concurrent-report)
17:30
Merge recent trunk enhancements into the begin-concurrent-pnu branch. (check-in: 229107b1 user: drh tags: begin-concurrent-pnu)
17:29
Merge recent trunk enhancements into the begin-concurrent branch. (check-in: 59303e69 user: drh tags: begin-concurrent)
16:53
Merge the latest trunk enhancements into the wal2 branch. (check-in: 41363fb9 user: drh tags: wal2)
2021-06-16
19:23
Add an ALWAYS on a branch in STAT4-only logic that is now always true due to check-in [c21bc5a2353e660f]. (check-in: 7bd55eee user: drh tags: trunk)
18:58
Omit a handful of tests from pager1.test when testing SQLITE_ENABLE_ZIPVFS builds. (check-in: c3036c28 user: dan tags: trunk)
16:56
Do not run test file sessionbig.test on 32-bit platforms. It uses too much memory. (check-in: 75e53215 user: dan tags: trunk)
15:56
Adjust the mkshellc.tcl script so that the generated code always uses unix-style line endings. (check-in: 9f69af4d user: drh tags: trunk)
13:26
Avoid ominous warning in showdb.c (check-in: f8d7ac01 user: larrybr tags: trunk)
12:26
Adjustments to requirement markings in comments. No changes to code. (check-in: be00e45b user: drh tags: trunk)
11:32
Enhanced defense against integer overflow in ALTER TABLE. (check-in: fb7f094e user: drh tags: trunk)
2021-06-15
20:10
Fix some #ifdefs so that builds work for all supported compile-time options. (check-in: ca7d78f7 user: drh tags: trunk)
20:07
Fix an incorrect ifdef in the previous check-in. (Closed-Leaf check-in: 4b2bb467 user: drh tags: ifdef-update)
18:46
Fix some minor #ifdef issues so that all of the supported compile-time options continue to build. (check-in: d8cf4070 user: drh tags: ifdef-update)
15:36
Update the "nmakehlp.c" utility program sources associated with the TCL Extension Architecture, obtained from https://core.tcl-lang.org/sampleextension/file. Perhaps this new version will sit better with salmonx's static analyzer (ref1), (ref2). (check-in: 603b851d user: drh tags: trunk)
15:15
Add NULL checks on all sqlite3_vfs_find(0) calls. This is not strictly necessary. There are no vulnerabilities here. However, adding these checks avoids unnecessary static analyzer complaints. Forum post ce1193be15. (check-in: 272a15b9 user: drh tags: trunk)
14:34
Prevent an infinite loop in the trim() SQL function if the second argument is a carefully malformed UTF8 string. (check-in: 829343c2 user: drh tags: trunk)
2021-06-14
20:49
Fix typos in testcase() macros from check-in [c09d90eec2a49b94]. (check-in: d4d9869c user: drh tags: trunk)
20:41
In the authorizer, use SQLITE_DROP_INDEX, not SQLITE_DROP_TEMP_INDEX when dropping an index in an attached database. (check-in: e5a5acd6 user: drh tags: trunk)
20:08
Fix an ALTER TABLE problem with handling infinite loops of CTEs in the database schema. (check-in: c09d90ee user: dan tags: trunk)
14:52
Fix a test script problem in corruptN.test. (check-in: 3ddfe9ae user: dan tags: trunk)
14:25
Update this branch with latest changes from wal2. (check-in: 0ab89901 user: dan tags: begin-concurrent-pnu-wal2)
14:12
Update this branch with latest changes from trunk. (check-in: b38c2b8b user: dan tags: wal2)
14:01
Update this branch with latest changes from begin-concurrent-pnu. (check-in: a485d1a1 user: dan tags: begin-concurrent-report)
14:00
An index on the expression "likely(X)" should store the true value of X, even if X is a real number with no fractional part. The optimization of storing some REAL indexed values as INT (see [10d851353c2abead]) should be omitted for index columns that are expressions. Forum post 3b940c437a. (check-in: 791473bc user: drh tags: trunk)
13:49
Update this branch with latest changes from trunk. (check-in: 74b42754 user: dan tags: begin-concurrent-pnu)
12:23
Update this branch with latest trunk changes. (check-in: d8199634 user: dan tags: begin-concurrent)
11:20
Avoid allocating oversized column names in the sqllimit1.test module. (check-in: 7068f1f6 user: drh tags: trunk)
2021-06-13
19:14
The opcode that preceeds OP_SeekScan is usually OP_IdxGT but can sometimes be OP_IdxGE. Adjust asserts accordingly. Follow-up to [9a2ab6092d644fc3]. dbsqlfuzz e41762333a4d6e90a49e628f488d0873b2dba4c5 (check-in: d6803ed8 user: drh tags: trunk)
17:55
Improved defense against OOM errors in sqliteInitOne(). dbsqlfuzz 429db39cd5777c46479641e8637c48c62890042d (check-in: b6c57e0e user: drh tags: trunk)
08:23
Correct link in .ar help. (check-in: de9d0f95 user: larrybr tags: trunk)
2021-06-12
18:12
The sqlite3WithPush() routine might destroy its second argument if there was a prior OOM. Do not use the second argument of sqlite3WithPush() if this happens. (check-in: baa3f962 user: drh tags: trunk)
17:45
An alternative approach to the use-after-free problem. (Closed-Leaf check-in: 6796b7a2 user: drh tags: alternative-oom-fix)
16:17
Fix a use-after-free that could follow an OOM in ALTER TABLE. (Edit:) Still contains problems. (Closed-Leaf check-in: 193b14a5 user: dan tags: original-uaf-fix)
2021-06-11
13:18
Reapply two recent ALTER TABLE error checks that turned out to be necessary after all. dbsqlfuzz fc5a9deefda00dda914748985155a6d4c44174e5. (check-in: 230fedd9 user: drh tags: trunk)
12:41
Avoid bugs in some implementations of dlopen() by avoiding calls to dlopen() with a filename argument that exceeds FILENAME_MAX bytes. Forum post 08a0d6d9bf. (check-in: 01f3877c user: drh tags: trunk)
12:14
Fix a crash in new ALTER TABLE code that could follow an OOM. (check-in: 6f1f2a0a user: dan tags: trunk)
12:02
Remove an unreachable branch added by the previous commit. (check-in: 852ee0e9 user: dan tags: trunk)
11:14
Fix problems with ALTER TABLE and schemas that contain views with some recursive CTEs, or CTEs that reference other CTEs. Forum post 9d965f2956. (check-in: 8b1f9a51 user: dan tags: trunk)
2021-06-10
19:37
Fix an assert() added by the previous commit that could fail with some database schemas. (Closed-Leaf check-in: 5079b5d5 user: dan tags: alter-table-cte-fix-1)
19:08
Fix problems with ALTER TABLE and schemas that contain views with complex CTEs. (check-in: 32e3ecfc user: dan tags: alter-table-cte-fix-1)
14:36
Improved robustness following OOM in the constant propagation optimization. dbsqlfuzz 001a20255c0df7495c21df62a20ea5b51e22c390. (check-in: 8658a64d user: drh tags: trunk)
2021-06-09
14:45
Set the database connection error code for an oversize argument to sqlite3_bind_blob64() or sqlite3_bind_text64(). Forum post a636276f0d451667 and 33821c8db543c. (check-in: 56ff58c0 user: drh tags: trunk)
13:39
Add defensive code to better handle corrupt records in fts5. (check-in: a99c29b5 user: dan tags: trunk)
2021-06-08
23:46
Remove two assert()s in FTS5 that checks for database corruption right before actual code does the same check. dbsqlfuzz 9680db8f5338cb9b6060eb3a02d984555d4472e3. (check-in: f3f82967 user: drh tags: trunk)
17:56
Try to avoid a double-free in the showdb utility program when running pgidx on a corrupt database. See forum post a60ea5a4d4 for context (check-in: e3188a86 user: drh tags: trunk)
12:22
Add an assert() to prevent the value of the SQLITE_VTABRISK macros from being changed in a way that would break logic. (check-in: 33babdb5 user: drh tags: trunk)
12:15
Avoid a buffer overread in fts3 that could occur when handling corrupt data structures. (check-in: 45f459d2 user: dan tags: trunk)
2021-06-07
17:36
Fix a buffer overread that could occur in fts5 when handling corrupt records. (check-in: 078962a2 user: dan tags: trunk)
15:28
Fix a buffer overrun in fts3 that could occur when handling corrupt records and '^' queries. (check-in: 9d0b6b0f user: dan tags: trunk)
14:21
Add recent dbsqlfuzz test cases to test/fuzzdata8.db. (check-in: 16202200 user: drh tags: trunk)
13:50
Avoid use of uninitialized memory while running defragmentPage() on a corrupt database file. dbsqlfuzz 4c45cecc0b255aaf2ea85453ccd17e814fd0b6b2 (check-in: 35e40d75 user: drh tags: trunk)
11:50
Fix an assert() in the OP_ParseSchema opcode that might fail on a corrupt database file when running with PRAGMA writable_schema=ON. dbsqlfuzz e7d743ca65f2767e415095f0c5a49166a0f55eea. (check-in: 10801f65 user: drh tags: trunk)
00:54
Remove unnecessary end-of-line whitespace from the regexp.c extension. (check-in: 17e26a1f user: drh tags: trunk)
00:41
Omit the unnecessary highlighting of the security implications of SQLTIE_DIRECTONLY in the sqlite3_create_function() documentation. No changes to code. (check-in: 2aa9368b user: drh tags: trunk)
2021-06-04
23:26
A better fix for the problem addressed by [4eb80b0cc61526c1]. This fix also avoids reading uninitialized variables. (check-in: 1c71de43 user: drh tags: trunk)
21:46
Make MSVC build examples work when taken literally, and say when they do. (check-in: b53ca8ed user: larrybr tags: trunk)
17:47
Improvements to the OP_SeekScan optimization. Added the SQLITE_TESTCTRL_TUNE test-control. (check-in: 9a2ab609 user: drh tags: trunk)
16:17
Add the (missing) dependency of regexp.c to the shell.c rule in the makefiles. This dependency should have been added by [5d4535bfb603d7c8] but was missed. (check-in: c93be7e6 user: drh tags: trunk)
16:11
Fix harmless compiler warnings. (check-in: 83aca2d8 user: drh tags: trunk)
15:56
Fix more cases in the regexp extension where the 0x00 terminator at the end of the input string is being pattern matched. [forum/forumpost/9104f0d9e7|Forum post 9104f0d9e7]. (check-in: 569e00d4 user: drh tags: trunk)
13:40
Revamp SQLITE_TESTCTRL_TUNE to provide visibility of current turning parameter values. (Closed-Leaf check-in: 677e645e user: drh tags: seekscan-improvements)
13:16
Add support for SQLITE_TESTCTRL_TUNE and the ".testctrl tune ID VALUE" command in the CLI. (check-in: f1199d58 user: drh tags: seekscan-improvements)
12:29
Merge recent trunk enchancements into the seekscan-improvements branch. (check-in: d9e85fe8 user: drh tags: seekscan-improvements)
2021-06-03
18:56
Fix a case where combining row-value UPDATE FROM syntax with window functions over aggregates can cause an error. dbsqlfuzz ae4516bff08d736f203f09934e2f4d31e0b3e7ce (check-in: 4a587c34 user: dan tags: trunk)
18:51
Fix the truncate optimization so that PRAGMA count_changes and changes() return correct values even for a WITHOUT ROWID table. Forum post 07dedbf9a1. (check-in: 820ae3b1 user: drh tags: trunk)
13:51
Add the regexp() and regexpi() extension functions to the CLI. (check-in: 5d4535bf user: drh tags: trunk)
13:44
Fix a bug in the regexp extension in which the "." wildcard would match the 0x00 terminator at the end of the comparison string. (check-in: fa23108b user: drh tags: trunk)
12:31
Fix the case-insensitive version of the regexp() function so that it does not use the prefix optimization incorrectly. Forum post 983b43ef8e. (check-in: 1a8e43cc user: drh tags: trunk)
2021-06-02
19:28
Add an optimization control bit to disable the OP_SeekScan optimization. (check-in: f674c41e user: drh tags: seekscan-improvements)
18:50
Fix an ALWAYS which can be false. (check-in: a87f8ecd user: drh tags: seekscan-improvements)
17:32
Tighten assert() restrictions on the OP_SeekScan opcode. (check-in: dbc33d3a user: drh tags: seekscan-improvements)
17:14
Never use WHERE_IN_SEEKSCAN for the 2nd or subsequent IN operator. (check-in: d0b98619 user: drh tags: seekscan-improvements)
12:44
This is an attempt to address the OP_SeekScan performance issue identified by forum post b4fcb8a598. (check-in: d58efb3f user: drh tags: seekscan-improvements)
2021-06-01
21:07
Fix issue in 'mkopcodeh.tcl' tool that prevented its termination in rare circumstances. (check-in: a8d92113 user: mistachkin tags: trunk)
15:37
Fix a problem with running ALTER TABLE against schemas that contain compound SELECT statements with ORDER BY clauses containing one or more references to the second or subsequent component SELECT statements. This fixes the problem reported by forum post 31ceaa8461. (check-in: 587a3044 user: dan tags: trunk)
2021-05-29
23:07
Do not confuse the ">" operator with IS NOT NULL when checking to see if a partial index is usable. Forum post d813704d7c. (check-in: 8cc23931 user: drh tags: trunk)
21:50
Fix a subtle error in an assert(). dbsqlfuzz eefbd0215c0c1b4bcc32b8141b48b35f7b431300 (check-in: a5ec81eb user: drh tags: trunk)
2021-05-28
14:28
If a subquery is used to drive an index, this change avoids making an extra copy of the result of that subquery. But, such situations are probably sufficiently unusual that the added complexity of this enhancement is not worth the performance gain. So I'm going to park this check-in on a branch. If we later find a use case to justify it, we can merge it to trunk then. This is the "further change" that was promised by the prior check-in comment. (Leaf check-in: 4488cb88 user: drh tags: copy-optimization)
12:48
Make a deep copy of the result of a subquery in case the subquery is reused. Fix for the problem reported by forum post 28216b36ac and introduced by check-in [f30fb19ff763a7cb]. Further changes to try to optimize the new OP_Copy opcode back into either OP_SCopy or OP_Move will be attempted separately. A test case will be in TH3. (check-in: c9f0b9cb user: drh tags: trunk)
12:15
Fix a potential memory leak in json_group_object() following an error. dbsqlfuzz cd32630de3ff039d97089592b63cb3616f8ec9dd (check-in: 21676731 user: drh tags: trunk)
2021-05-27
16:31
Add the merge-test.tcl script to ease verification of LTS branches. (check-in: f958ffbc user: drh tags: trunk)
14:09
Improved comment on the prpagateConstants() routine. No changes to executable code. (check-in: d61a875d user: drh tags: trunk)
10:23
Remove a NEVER that is reachable following OOM in writable_schema=ON mode with a corrupt schema. (check-in: 4eb80b0c user: drh tags: trunk)
2021-05-26
23:10
Improvements to the constant-propagation optimization in order to better deal with unusual affinities. See forum post 6a06202608 for more detail. (check-in: 9be208a6 user: drh tags: trunk)
19:52
Minor optimization to opcode comparison logic in the fixes to the constant-propagation optimization on this branch. (Closed-Leaf check-in: f17dec40 user: drh tags: constant-propagation-fix)
19:37
Add new test file whereM.test. Containing tests for the change on this branch. (check-in: c4c76b82 user: dan tags: constant-propagation-fix)