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50 check-ins occurring around af7d1596044980e0.

2017-05-11
12:27
Improvements to the sqlite3_set_authorizer() documentation. (check-in: 47629b1911 user: drh tags: trunk)
12:05
Change the SQLITE_READ authorization call for unreferenced tables to use an empty string for the column name, as this is less likely to impact legacy authorization callbacks that assume column names are always non-NULL. (check-in: 4139953ab5 user: drh tags: trunk)
2017-05-10
19:42
Rename fields of the internal AuxData object to make them unique and easier to search for. (check-in: 2be9850cef user: drh tags: trunk)
16:33
Improved documentation for the SQLITE_READ authorizer callback. No code changes. (check-in: 92c5ea7047 user: drh tags: trunk)
16:18
Fix a problem causing a lock to be held past the end of a transaction. Use a blocking lock to take the read-lock on page 1 taken by all transactions. (check-in: 2584df3d42 user: dan tags: server-edition)
16:12
Invoke the SQLITE_READ authorizer callback with a NULL column name for any table referenced by a query but from when no columns are extracted. (check-in: 92ab1f7257 user: drh tags: trunk)
13:46
Use a blocking call to obtain the wal-mode WRITER lock in some cases. (check-in: 4464ca1d68 user: dan tags: server-edition)
13:36
Fix a couple of test scripts so that they work with -DSQLITE_DISABLE_FTS4_DEFERRED builds. (check-in: 30018d3106 user: dan tags: trunk)
12:58
Avoid unnecessary codec operations on in-memory subjournals. (check-in: 199b2a8499 user: drh tags: trunk)
12:49
Do not invoke codec macros for in-memory subjournals. (Closed-Leaf check-in: d2bb0066f7 user: drh tags: codecless-inmemory-subjournal)
2017-05-09
16:32
Fix a problem with wrapping the log file in server mode. (check-in: 270b7d1eac user: dan tags: server-edition)
2017-05-08
20:15
Add some support for wal mode to the hack on this branch. (check-in: b733afc1d0 user: dan tags: server-edition)
18:29
Do not invoke codec macros when reading or writing an in-memory sub-journal. (check-in: 2c145ee6c9 user: dan tags: codecless-inmemory-subjournal)
2017-05-06
18:09
Fix an obscure assertion fault that can follow an OOM. The problem was introduced by check-in [a1cf44763277b6c7]. (check-in: 04e7e5650e user: drh tags: trunk)
17:12
Fix requirements marks and harmless compiler warnings. (check-in: 198ff4c01d user: drh tags: trunk)
16:04
Update this branch with latest trunk changes. (check-in: ed6bad67f5 user: dan tags: server-edition)
2017-05-04
14:02
Remove the tool/schemalint.tcl script. And related Makefile entries. It is superseded by sqlite3_expert. (check-in: 269bf52e27 user: dan tags: schemalint)
11:13
Fix a collision of the "B0" identifier name between the termios.h header file and the SHA3 implementation in the shell. (check-in: b9a58daca8 user: drh tags: trunk)
2017-05-03
19:36
Remove the unused "sqlite3_stack_used" TCL command from the test harness. (check-in: e24b73820c user: drh tags: trunk)
17:44
Fix the sqlite3GetInt32() function so that it correctly returns 0 on a zero-length input string. (check-in: 05eba9e3a5 user: drh tags: trunk)
15:54
Always enable URI filenames when compiling with SQLITE_HAS_CODEC. Also allow plaintext keys using the key= query parameter. (check-in: 31a51b4d16 user: drh tags: trunk)
13:05
Fix a harmless compiler warning on Windows. (check-in: 593e5dd00c user: drh tags: schemalint)
12:50
Get sqlite3_expert building on Windows. (check-in: d8254047b3 user: drh tags: schemalint)
12:15
In sqlite3expert.c, do not copy the schema for virtual tables. Updates to makefiles to make building easier. (check-in: da15752dcc user: drh tags: schemalint)
2017-05-02
20:42
In the sqlite3_expert command-line tool, allow two-dash options. Do not accept the database name if it begins with "-". (check-in: af7d159604 user: drh tags: schemalint)
19:45
Merge the latest enhancements from trunk. (check-in: a7dcf6a79f user: drh tags: schemalint)
18:00
Fix the fts3EvalAverageDocsize() routine so that it returns errors from sqlite3_reset() rather than always returning SQLITE_OK. (check-in: 430f539cbb user: drh tags: trunk)
17:54
Reuse the same materialization of a view when that view appears in a query more than once, such as in a self-join. (check-in: 9e35c89dbe user: drh tags: trunk)
16:55
Move terms of the HAVING clause that reference only columns in the GROUP BY clause over to the WHERE clause, resulting in a faster query plan. (check-in: 47cbb471d0 user: drh tags: trunk)
16:46
Additional comments on the sqlite3ExprIsConstantOrGroupBy() routine. No code changes. (Closed-Leaf check-in: 8424492eac user: drh tags: having-where-optimization)
01:30
Fix typo in comment. No changes to code. (check-in: 6674814afb user: mistachkin tags: trunk)
2017-05-01
20:07
Update this branch with latest trunk changes. (check-in: 83b1e163ef user: dan tags: server-edition)
19:53
Remove an unnecessary branch. (check-in: a33179596f user: drh tags: having-where-optimization)
18:24
Enhance "PRAGMA integrity_check" to detect duplicate rowids within a leaf page. (check-in: adcad37b00 user: dan tags: trunk)
18:12
Clear the BTCF_ValidNKey flag set if a cursor is moved by sqlite3BtreeInsert(). Fix for [f68dc596c4]. (check-in: a6727eef6d user: dan tags: trunk)
17:04
Futher bug fixes to the function that determines when a materialized view can be reused. (Closed-Leaf check-in: c64fe3a169 user: drh tags: materialized-view-reuse)
16:37
Minor bug fixes and performance enhancement. (check-in: b2aae55958 user: drh tags: materialized-view-reuse)
15:15
Initial implementation of an optimization that attempts to reuse the same materialization of a view on a self-join of the view. (check-in: 478c34b9a8 user: drh tags: materialized-view-reuse)
14:25
Update this branch with latest trunk changes. (check-in: 11f4761c3a user: dan tags: schemalint)
14:09
Add extra tests for the optimization on this branch. (check-in: 4921cd9520 user: dan tags: having-where-optimization)
2017-04-29
20:53
Automatically transfer terms from the HAVING clause to the WHERE clause of an aggregate query in cases where the result of evaluating the term depends only one one or more of the GROUP BY expressions (and on no other inputs). (check-in: 5375a3ce56 user: dan tags: having-where-optimization)
19:29
Add a single testcase() macro to the subquery processing logic. (check-in: 4e1df76e3d user: drh tags: trunk)
18:02
Improvements to opcode documentation in the bytecode engine. No changes to code. (check-in: e54c9f8db5 user: drh tags: trunk)
15:48
Avoid reading the file-size before page 1 is read-locked. (check-in: f6b025bf63 user: dan tags: server-edition)
15:27
Evaluate WHERE clause terms that reference only the index before evaluating terms that require the table, and thereby avoid seeking the table row if index terms are false. This is called the "push-down" optimization in the MySQL world, we are told. Do not confuse with WHERE-clause push-down. (check-in: d7bb79ed3a user: drh tags: trunk)
14:56
Minor size and performance improvements to the push-down optimization. (Closed-Leaf check-in: 91dfb61a1a user: drh tags: pushdown-optimization)
2017-04-28
19:59
Within a loop that uses a non-covering index test, test non-indexed terms that can be tested without seeking the main table cursor before those that cannot. (check-in: afe68f0a80 user: dan tags: pushdown-optimization)
17:32
Fix various bugs revealed by running performance tests. (check-in: a40b42c422 user: dan tags: server-edition)
14:09
Add a missing releasePage() call to the server-mode free-list management code. (check-in: a5a085483c user: dan tags: server-edition)
10:20
Use a different free-list format for server-mode databases in order to reduce contention. (check-in: 778e8a102d user: dan tags: server-edition)