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50 check-ins occurring around 260fc696538b195e.

2018-05-09
13:46
Make the internal dynamic string interface available to extensions using the new sqlite3_str object and its associated methods. This is mostly just a renaming of internal objects and methods to use external names, through there are a few small wrapper functions. (check-in: 87f261f0cb user: drh tags: trunk)
10:11
Fix a typo in a comment used for documentation. No code changes. (check-in: b866693e6a user: drh tags: trunk)
02:23
Version 3.23.2 (Leaf check-in: f139f6f07d user: drh tags: release, branch-3.23, version-3.23.2)
2018-05-08
23:17
Correctly format the STAT1 and STAT4 content in the output from the ".fullschema" command in the CLI. Fix for ticket [e63a34a0045832dc850367552]. (check-in: 0c3f128fd7 user: drh tags: trunk)
22:47
Experiments with routines for processing GeoJSON. (check-in: d22fbff2a3 user: drh tags: geojson)
13:32
Merge changes from trunk, especially the activation of the cell-overwrite optimization for indexes and WITHOUT ROWID tables. (check-in: a016144b0e user: drh tags: apple-osx)
13:03
Fix a harmless compiler warning in fuzzcheck. Add new OSSFuzz test cases to the test case library. (check-in: d2619746cb user: drh tags: trunk)
12:49
Fuzz test cases for UPSERT. (check-in: fd11fbd218 user: drh tags: trunk)
2018-05-07
18:41
Activate the cell-overwrite optimization for index b-trees. (check-in: a68697d10e user: drh tags: trunk)
17:27
Improved comments on the cell-overwrite optimization code. (check-in: a4fe966da2 user: drh tags: trunk)
13:01
Merge enhancements from trunk, and especially the cell-overwrite optimization. (check-in: cb3aa77802 user: drh tags: apple-osx)
11:48
On an UPDATE, try to overwrite an existing btree cell with the modified content, if the old and new cell are the same size. Use memcmp() first to avoid dirtying pages that are unchanged. (check-in: 5887d8beb5 user: drh tags: trunk)
11:37
Fix harmless compiler warnings associated with the new EXPLAIN QUERY PLAN logic. (check-in: 374d8e2644 user: drh tags: trunk)
11:29
Fix harmless compiler warnings in the cell-overwrite logic. (Closed-Leaf check-in: 3e11dc3183 user: drh tags: cell-overwrite-prototype)
02:50
Backout change [05fee1a21ea398f1e4d6f1cf3] because it does not take into account the LD_LIBRARY_PATH environment variable used by dl_open(). (check-in: b348d1193a user: drh tags: trunk)
2018-05-05
16:50
In an ORDER BY LIMIT, make sure the ORDER BY expression evaluator does not try to reuse values from the result set if the result set has not yet be computed. This fixes a bug in the recent deferred-row loading optimization, check-in [c381f0ea57002a264fd958b28e]. OSSFuzz discovered the problem. (check-in: 5d61e75f32 user: drh tags: trunk)
01:23
Fix a slightly incorrect corruption detection branch in the btree logic. (check-in: 9191ff670c user: drh tags: trunk)
2018-05-04
20:00
Bring the code that changes the owner of WAL and rollback files when running as root into alignment with trunk. (check-in: 180516bf7b user: drh tags: apple-osx)
19:33
Merge recent enhancements from trunk. (check-in: e17bca2cdb user: drh tags: apple-osx)
19:18
Merge enhancements from trunk. (check-in: 9650f71b82 user: drh tags: cell-overwrite-prototype)
18:32
Fix requirements marks. No code changes. (check-in: 7fdad122a2 user: drh tags: trunk)
04:49
For the amalgamation-tarball, enable FTS5 and JSON1 by default and provide a new --enable-debug option that actives debugging facilities. (check-in: 03edecaf9d user: drh tags: trunk)
00:39
Make a separate limb in the EXPLAIN QUERY PLAN output for the various lines associated with the OR-optimization. (check-in: 75ac7b4e4f user: drh tags: trunk)
2018-05-03
23:20
In ORDER BY LIMIT queries, try to evaluate the ORDER BY terms first, and it it becomes clear that the row will not come in under the LIMIT, then skip evaluation of the other columns. (check-in: c381f0ea57 user: drh tags: trunk)
22:52
Fix a branch that has become unreachable due to recent enhancements. (check-in: 81ab5e0d10 user: drh tags: trunk)
21:51
Improved security for VACUUM. This check-in combines the fixes of [ab0d99d0b5ede] and [27754b74ddf646] in a way that is less likely to to be broken by future changes. (check-in: 260fc69653 user: drh tags: trunk)
19:56
Overhaul of EXPLAIN QUERY PLAN. The output is now in the form of a tree. More details of the query plan are shown, and what is shown is truer to what actually happens. (check-in: ff01bbdabc user: drh tags: trunk)
19:47
Optimizations to the new EQP framework. (Closed-Leaf check-in: 956fef361a user: drh tags: rework-EQP)
16:56
Fix various error handling conditions on the cell overwrite optimization. Fix a test case so that it works with the new optimization. (check-in: f89b54f414 user: drh tags: cell-overwrite-prototype)
14:07
The BtCursor.info fields are only valid if info.nSize!=0. (check-in: 54c537eead user: drh tags: cell-overwrite-prototype)
13:56
Add more corruption checking to the cell overwrite logic. (check-in: 58d14afe1e user: drh tags: cell-overwrite-prototype)
12:57
Bug fixes in the overwrite optimization. (check-in: 0cb6cd2a6a user: drh tags: cell-overwrite-prototype)
03:59
The sqlite3BtreeInsert() routine tries to overwrite an existing cell with modified content if the new content is the same size. Pages are only dirtied if they change. This prototype works some, but still has issues. (check-in: 489451b378 user: drh tags: cell-overwrite-prototype)
01:37
Enhance EXPLAIN QUERY PLAN to report the generation of constant rows using VALUES or just a SELECT without FROM. (check-in: c75eee69fa user: drh tags: rework-EQP)
2018-05-02
19:42
More test case updates. Tests are all running now. (check-in: dab5e52948 user: drh tags: rework-EQP)
18:00
Fix test cases so that they work with the new EXPLAIN QUERY PLAN output format. Only some of the cases have been fixed. This is an incremental check-in. (check-in: 5f0e803e33 user: drh tags: rework-EQP)
16:13
Improved EQP output for recursive CTEs and multi-value VALUES clauses. (check-in: f2f525548c user: drh tags: rework-EQP)
15:00
Prevent VACUUM from running any commands in sqlite_master.sql other than CREATE statements. That is all that should be there anyhow. This fixes a problem discovered by OSSFuzz. Test cases in TH3. (check-in: ab0d99d0b5 user: drh tags: trunk)
14:24
Fix a dangling-else problem that was causing recursive CTEs to malfunction. Begin fixing test cases to work with the new EQP output. (check-in: 82ca44b82f user: drh tags: rework-EQP)
08:12
Fix a problem in the xBestIndex method of the closure extension causing it to allocate non-contiguous argvIndex values in some cases (an "xBestIndex malfunction" error). (check-in: 0c67150749 user: dan tags: trunk)
03:03
Add sqlite3_win32_set_directory8() and sqlite3_win32_set_directory16() functions. (check-in: 6cf0f4e2b4 user: mistachkin tags: branch-3.23)
03:01
Add sqlite3_win32_set_directory8() and sqlite3_win32_set_directory16() functions. (check-in: 22089ea2bb user: mistachkin tags: trunk)
02:22
Improvements to the EQP display for compound select statements. (check-in: 699a77e479 user: drh tags: rework-EQP)
00:33
Begin reengineering the EXPLAIN QUERY PLAN function to provide more intuitive output. (check-in: 70b48a7972 user: drh tags: rework-EQP)
2018-05-01
18:39
The SQLITE_ALLOW_SQLITE_MASTER_INDEX compile-time option allows a CREATE INDEX statement against the sqlite_master table. Once created, the index works, and is usable by legacy instances of SQLite. (check-in: 853f316359 user: drh tags: trunk)
01:18
The ".selecttrace 0x4000" command causes the AST to be output to stdout as a table with four columns. (Leaf check-in: 2a75e631ee user: drh tags: ast-trace-demo)
2018-04-30
19:32
Defer loading result column values into registers on an ORDER BY LIMIT until we know that the LIMIT does not exclude the current row. (Closed-Leaf check-in: ce4ef46058 user: drh tags: faster-order-by-limit)
2018-04-28
19:08
Test cases added for SQLITE_DBCONFIG_RESET_DATABASE. (check-in: 08665a9e2e user: drh tags: trunk)
18:20
Fix an RBU problem causing spurious SQLITE_CONSTRAINT errors when restarting an RBU update in which more than one source table writes to a single target database table. (check-in: 564ae8297d user: dan tags: trunk)
13:21
Add the SQLITE_DBCONFIG_RESET_DATABASE control for resetting a corrupt database file without closing any database connections. Added the ".dbconfig" command to the CLI. (check-in: a200a49ede user: drh tags: trunk)