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52 check-ins using file src/parse.y version 3bd43415

2018-07-27
20:45
Enhance Makefile for MSVC to support building the shell tool without using the amalgamation. (check-in: 3d815d83 user: mistachkin tags: trunk)
20:37
The WHERE-clause constant propagation optimization attempts to use transitive laws to replace column values with constants in the WHERE clause in order to help to query planner make more aggressive optimizations. (check-in: f4229707 user: drh tags: trunk)
20:01
Reduce the performance cost of the constant propagation optimization to less than 200,000 cycles. (Closed-Leaf check-in: 865249de user: drh tags: propagate-const-opt)
18:19
Performance improvement to sqlite3ExprCollSeq(). With this change, the performance of speed-check.sh is within 400,000 cycles of trunk. (check-in: a5f86f49 user: drh tags: propagate-const-opt)
18:12
Faster implementation of sqlite3IsBinary(). (check-in: be05d0db user: drh tags: propagate-const-opt)
17:51
Only run the constant propagation optimization on joins since that is the only scenario where it is useful. This saves prepare time for the common case of a simple query. (check-in: 598d6083 user: drh tags: propagate-const-opt)
16:57
Constant propagation is now restricted to just the WHERE clause. The mechanism is changed to take affinity and collation into account. This seems to give correct answers. But the search for constant propagation costs 4 million cycles in the speed test. (check-in: 82c67efb user: drh tags: propagate-const-opt)
2018-07-26
23:54
Add a test case demonstrating the collation problem with constant propagation. (check-in: 50add839 user: drh tags: propagate-const-opt)
23:47
Generalize the constant propagation optimization so that it applies on every WHERE close, not just those that contain a subquery. This then demonstrates that the current implementation is inadequate since it does not take into account collating sequences. (check-in: 57eb2abd user: drh tags: propagate-const-opt)
21:48
In the unix VFS, give every unixInodeInfo object its own mutex, rather than using the global VFS mutex, to improve concurrency in cases where there are many threads operating on separate database files. (check-in: 22f47cf4 user: drh tags: trunk)
21:16
Initial implementation of the WHERE-clause constant propagation optimization. (check-in: 2fb82ad8 user: drh tags: propagate-const-opt)
2018-07-25
15:25
Fix a buffer overread in fts5. (check-in: 0e3de8ab user: dan tags: trunk)
15:12
Keep generated opcode values grouped together when required, even when they do not correspond to a token. (check-in: 6ee2950b user: mistachkin tags: trunk)
07:29
Fix a typo in the documentation for sqlite3_snapshot_get(). (check-in: cd9713c9 user: dan tags: trunk)
2018-07-24
22:02
Do not abort running queries due to a CREATE INDEX statement. Allow them to run to completion before being reprepared. Fix for ticket [c694113e50321afdf9]. (check-in: 2bd59333 user: drh tags: trunk)
13:57
Add missing SQLITE_OMIT_WINDOWFUNC check to the json1 extension. (check-in: fe19f823 user: mistachkin tags: trunk)
2018-07-23
22:55
Return an SQLITE_NOMEM error if the locking mutex fails to allocate. (Closed-Leaf check-in: 1c948348 user: drh tags: separate-lock-mutex)
21:10
First attempt at reducing mutex contention in the unix VFS by providing a separate mutex for each unixInodeInfo object. (check-in: f69afaf0 user: drh tags: separate-lock-mutex)
18:53
Fix typo of 'SQLITE_OMIT_WINDOWFUNC'. (check-in: 8607b84a user: mistachkin tags: trunk)
18:32
Attempt to improve the documentation for snapshots. No changes to code. (check-in: 46dd076a user: drh tags: trunk)
10:57
Fix the macros used to generate the output of "PRAGMA compile_options" so that they handle valid values for the SQLITE_DEFAULT_LOOKASIDE macro (which contain a "," character). (check-in: 1cc72845 user: dan tags: trunk)
2018-07-22
21:23
Fix more harmless compiler warnings seen with MSVC. (check-in: edab5666 user: mistachkin tags: trunk)
21:08
Another minor revision to the 'fulltestonly' set of tests. (check-in: 61f8e2a4 user: mistachkin tags: trunk)
20:24
Fix harmless compiler warning. (check-in: ead4762d user: mistachkin tags: trunk)
06:25
In the Win32 VFS, when truncating a file, unmap it first. (check-in: 21510a66 user: mistachkin tags: trunk)
00:45
Remove an unused branch in the FK logic. (Closed-Leaf check-in: 523ff779 user: drh tags: dropViewNoStat)
2018-07-21
23:15
In 'resetdb.test', close a database prior to trying to delete it. (check-in: 45137053 user: mistachkin tags: trunk)
2018-07-20
20:56
When dropping a view, skip trying to delete from 'sqlite_stat*'. (check-in: 2f5be3a2 user: mistachkin tags: dropViewNoStat)
19:24
Change the SQLITE_Stat34 bit of the optimization test-control so that it prevents STAT4 data from being used but allows it to be loaded into the Index objects. This permits STAT4 to be turned on and off on a per-statement basis. (check-in: 489f3caf user: drh tags: trunk)
18:01
Experimental change to ANALYZE so that when computing values for sqlite_stat1, it uses the maximum number for the number of rows having equivalent values, rather than the average. (Leaf check-in: 085f17e1 user: drh tags: stat1-max)
15:44
New checks in PRAGMA integrity_check to validate the autovacuum settings in the header. (check-in: a4663f09 user: drh tags: trunk)
13:39
Enhanced detection of problems on the freelist and on overflow list in PRAGMA integrity_check. (check-in: 11e58f5b user: drh tags: trunk)
2018-07-19
15:27
Avoid a branch in the commit logic that is unreachable when compiled without SQLITE_ENABLE_BATCH_ATOMIC_WRITE. (check-in: 271b8980 user: drh tags: trunk)
14:40
Allow the VACUUM following SQLITE_DBCONFIG_RESET_DATABASE to proceed even if the write-version in the header indicates that the database file is not writable. (check-in: 3dca8b9d user: drh tags: trunk)
11:44
Experimental fix for resetting databases that have been deemed read-only due to a corrupt "read-version" header field. (Closed-Leaf check-in: e2394002 user: dan tags: exp-dbreset-fix)
2018-07-18
19:09
Add the SQLITE_FCNTL_DATA_VERSION file control (check-in: a5087c5c user: drh tags: trunk)
17:37
Fix a harmless compiler warning in the pager. Enhance the docs for sqlite3_changes() and sqlite3_total_changes() to refer to the data_version pragma. (check-in: 4c70ea5b user: drh tags: trunk)
2018-07-17
14:01
If an SQLITE_IOERR error is encountered as part of an atomic commit on an F2FS file-system, retry the commit in legacy journal mode. (check-in: 2e0357c2 user: dan tags: trunk)
13:55
Fix for builds without SQLITE_ENABLE_BATCH_ATOMIC_WRITE. (Closed-Leaf check-in: b10ec14e user: dan tags: exp-retry-atomic-commit)
2018-07-16
20:44
Add new file doc/F2FS.txt, containing notes on the way SQLite uses the F2FS atomic commit feature. (check-in: 59efb1bf user: dan tags: exp-retry-atomic-commit)
11:32
Minor simplification to sqlite3RollbackAll(). (check-in: 432fdc22 user: drh tags: trunk)
2018-07-14
20:25
If an SQLITE_IOERR error is encountered as part of an atomic commit on an F2FS file-system, retry the commit in legacy journal mode. (check-in: 1c41250f user: dan tags: exp-retry-atomic-commit)
2018-07-13
20:28
Remove an unused function declaration from fts5. (check-in: 148d9b61 user: dan tags: trunk)
19:52
Add the "categories" option to the unicode61 tokenizer in fts5. (check-in: 80d2b9e6 user: dan tags: trunk)
2018-07-12
19:14
Add a test-control to disable the skip-scan optimization. (check-in: 650a3fe0 user: dan tags: trunk)
11:28
Add a test case to check that SQLITE_DBCONFIG_RESET_DATABASE can be used with wal mode databases even if there are active readers. (check-in: 6145f5b3 user: dan tags: trunk)
2018-07-11
13:34
On an UPSERT when the order of constraint checks is rearranged, make sure that the affinity transformations on the inserted content occur before any of the constraint checks. Fix for ticket [79cad5e4b2e219dd197242e9e5f4e]. (check-in: d120c45f user: drh tags: trunk)
03:27
Adjustments to VdbeCoverage macros to deal with byte-code branches that can never be taken in some directions. (check-in: b170c009 user: drh tags: trunk)
2018-07-10
23:31
Remove incorrect ALWAYS() macros from the window function logic. (check-in: 94ac51cc user: drh tags: trunk)
22:24
Add VdbeModuleComment()s on the three main code generators for window functions. (check-in: f7c239e9 user: drh tags: trunk)
20:50
Minor comment changes. Add ALWAYS() macros on some unreachable branches in the xStep() methods of built-in window functions. (check-in: f2057542 user: drh tags: trunk)
19:48
Identify Select objects within a single statement using small sequential integers rather than "0x%p". This is more readable and yields the same result on successive runs. (check-in: a7cdc5bc user: drh tags: trunk)