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Author SHA1 Message Date
drh
a976979b6e Refinements to the enhanced IN-operator logic. 
FossilOrigin-Name: 92ba2821468ecbfac2469161d81c873de67b2243
 2014-08-04 16:39:39 +00:00
drh
bb53ecb1db Enhancements to the code generator for the IN operator that result in much 
faster queries in some cases, for example when the RHS of the IN operator
changes for each row of a large table scan.

FossilOrigin-Name: 436e884215e2b33ca3fbb555362237b12827c07a
 2014-08-02 21:03:33 +00:00
mistachkin
16d511a664 Remove (newly) incorrect preprocessor check to fix build on WinRT. 
FossilOrigin-Name: ba7826542908eac2e14789d183d0b3e35b143fed
 2014-08-02 20:44:13 +00:00
drh
4c259e9f40 A better comment on the generated code for the NULL-in-RHS-of-IN detection 
logic.

FossilOrigin-Name: 9bc1c730a366e75b760b58e7a343d39165b2a469
 2014-08-01 21:12:35 +00:00
drh
6be515ebe0 Improved detection and handling of NULL values on the RHS of a IN operator. 
FossilOrigin-Name: 468e730036edac22cfeb9ea3515aa16e6bcd6650
 2014-08-01 21:00:53 +00:00
drh
e21a6e1dfe Remove an unnecessary OP_Null in the IN-operator logic. Attempt to clarify 
comments explaining the IN-operator code, though it is not clear that the
comments are correct even yet - more work to be done.

FossilOrigin-Name: c11e55fabbc718cb324ecd3540453c25db98f50c
 2014-08-01 18:00:24 +00:00
drh
5c3e9cf9de Clean up the IN operator code generation logic to make it easier to reason 
about.  In the process, improve code generation to omit some unused OP_Null
operations.

FossilOrigin-Name: 7c6fbcfe6ed5739e8e4639b7b123fbf9828cbfc0
 2014-08-01 15:51:36 +00:00
drh
e80c9b9ad5 The idea of coding IN operator with a short list on the RHS as an OR expression 
turns out to be helpful.  If the list is of length 1 or 2, the OR expression
is very slightly faster, but the ephemeral table approach is clearly better for
all list lengths greater than 2.  Better to keep the code simple.

FossilOrigin-Name: e13175d3579e1045165bab091b3b28951d691704
 2014-08-01 15:34:36 +00:00
drh
3a85625d87 Begin making changes to the IN operator in an attempt to make it run faster 
and to make the code easier to understand.

FossilOrigin-Name: ee0fd6aaf94cda1dce3fe752bfe3b0f83e0043f1
 2014-08-01 14:46:57 +00:00
drh
cefc87fca5 Enhance the PRAGMA integrity_check command to detect UNIQUE and NOT NULL 
constraint violations.

FossilOrigin-Name: 9abcf2698c09f4f6a44a68e74f9f6b538f3253d6
 2014-08-01 01:40:33 +00:00
drh
5f1d1d9c87 Refactoring: Change "pIndex->onError!=OE_None" to use a macro: 
"IsUniqueIndex(pIndex)".  Easier to understand that way.

FossilOrigin-Name: e75b26ee357bb3d3c1a539b05d633ebf314726d7
 2014-07-31 22:59:04 +00:00
drh
37e08081f3 Omit a pointless OP_Null when processing a value-list RHS of an IN operator 
where the LHS is a rowid.

FossilOrigin-Name: 1361450a9dfe9476e8df98f370a3695752252245
 2014-07-31 20:16:08 +00:00
mistachkin
202cb64189 Optimizations to the OS sub-type checking in the Win32 VFS. 
FossilOrigin-Name: 1e5489faff093d6a8e538061e45532f9050e9459
 2014-07-31 18:54:01 +00:00
dan
f6296cafc5 Add a missing call to "test_sqlite3_log" to multiplex.test. 
FossilOrigin-Name: 0708f9df23a325349f658741358c5994b5c4c873
 2014-07-31 18:14:37 +00:00
dan
e8559837e6 Fix a leaked statement handle in pager2.test. 
FossilOrigin-Name: 47457b0488abcbec2137abf706c1d677563b9ea5
 2014-07-31 17:35:40 +00:00
drh
4387006c18 Deactivate the DISTINCT in a SELECT on the right-hand side of an IN operator, 
since it should not make any difference in the output but dues consume extra
memory and CPU time.

FossilOrigin-Name: f4cb53651b1e352fae7378878b830a902bcd9248
 2014-07-31 15:44:44 +00:00
mistachkin
0174ffa976 Re-integrate the recent changes from the 'winMutex' branch back into the Win32 mutex subsystem. 
FossilOrigin-Name: 5360ecb0b8891d0c27f3f02d81b6c7b548361a10
 2014-07-30 23:11:16 +00:00
drh
d42d0bed94 Add three new static mutexes for use by the application. This is a partial 
import of changes from the threads branch.

FossilOrigin-Name: 3aad01960f92c5e77dba64ac1a6c6b063378fb97
 2014-07-30 21:10:12 +00:00
drh
c0fea3cf53 Add a new sqlite3FaultSim() call to vdbePmaReaderSeek() to facilitate 
tests of error handling in the sorter.

FossilOrigin-Name: 655d8cfc752b3f5f63521a57f2155f8e14aaf7c4
 2014-07-30 18:47:12 +00:00
drh
c690461ea1 Mark some invariants in the vdbesort.c logic when SQLITE_MAX_WORKER_THREADS==0. 
FossilOrigin-Name: 721cd965859c9ccc24d2a1d2851c914229e584b3
 2014-07-30 17:21:37 +00:00
drh
a1a8298c2e Add the "eForce" parameter to the sqlite3_multiplex_shutdown() entry point 
in test_multiplex.c.  Shutdown is forced if true.  Shutdown is not done if
there are pending database connections and eForce is false, but an error log
entry is made instead.

FossilOrigin-Name: c7303d0139f7e7f4fa7060b52942e6c6c6d4b622
 2014-07-30 15:43:05 +00:00
drh
bd1c881a91 Merge recent trunk changes, and especially the fix for the CREATE UNIQUE INDEX 
problem of ticket [9a6daf340df99ba9].

FossilOrigin-Name: 5b50a8380b2b678c1646ff303e3696efc1d7d92c
 2014-07-30 14:44:24 +00:00
drh
ac50232d0f Ensure that the correct number of columns in a UNIQUE index are checked for 
uniqueness, regardless of whether or not the original table has a ROWID or
if the columns are NOT NULL, etc.  Ticket [9a6daf340df99ba93c].

FossilOrigin-Name: 6b785e92f279cb65746834d5cd25594fd3333342
 2014-07-30 13:56:48 +00:00
mistachkin
0479c6ab9b Disable an assert that is sometimes generated spuriously. 
FossilOrigin-Name: bd9ee0ea69181526cfc3cadac33a5ec5190112b0
 2014-07-29 21:44:13 +00:00
mistachkin
a7f37491a7 Enhancements and updates to the Win32 mutex subsystem. 
FossilOrigin-Name: ca9868cdae19045dc522490b34dee0f14d928ebe
 2014-07-29 19:54:03 +00:00
mistachkin
acd57ea0c2 Update return value checking to conform to the beginthreadex() specs. 
FossilOrigin-Name: 3144a16f91364b455e54e6030714e1c12ab0bdb7
 2014-07-29 19:00:43 +00:00
mistachkin
7c2231cf3b Add a couple more assert statements. 
FossilOrigin-Name: 4e816db235025c7998c649fddabfd807290a08b9
 2014-07-29 18:53:01 +00:00
drh
b92284de11 Fix unreachable branches in the threads.c module. 
FossilOrigin-Name: 3175e366bbf7579ec9ab27214b0a4e5cd27ea204
 2014-07-29 18:46:30 +00:00
mistachkin
edd93c3349 Merge updates from trunk. 
FossilOrigin-Name: 08c9a4ea6353900095a471365a8611a443f5f399
 2014-07-29 18:03:36 +00:00
drh
cd4b637760 Fix a harmless compiler warning. 
FossilOrigin-Name: 216d21d0e62b3c0ad49f3cb395c845bf4f17ac61
 2014-07-29 17:22:12 +00:00
mistachkin
b1ac2bc8da Make the Win32 thread handles are available after the threads exit. 
FossilOrigin-Name: 565c5af7a75ad5c759ce1a61dab3a61c42819644
 2014-07-29 16:37:53 +00:00
drh
19f30dc171 Fix the threads build on Windows when SQLITE_MAX_WORKER_THREADS is greater 
than 0.

FossilOrigin-Name: f37db3a03d95b508066745613029b7dd1240b31c
 2014-07-29 15:18:00 +00:00
drh
011b2e5dd3 Merge the R-Tree fix and the new SQLITE_TESTCTRL_ISINIT test control from 
trunk.

FossilOrigin-Name: b2f7eb3cc27ecf9a6a88907991148bca1a7d54b3
 2014-07-29 14:16:42 +00:00
drh
43cfc230ab Add the SQLITE_TESTCTRL_ISINIT file control. 
FossilOrigin-Name: 8b651d4d6cde7efbc0cc7155948f477477be100e
 2014-07-29 14:09:21 +00:00
dan
57ff60b19b Have calls to the xFilter() method of rtree virtual tables ensure that cursor is initialized before proceeding. Fix for [d2889096e7bdeac]. 
FossilOrigin-Name: 8cc41b0bf365af47c2061ffe44c86018945dd239
 2014-07-29 11:54:18 +00:00
mistachkin
d6918657d8 Enhancements and updates to the Win32 mutex subsystem. 
FossilOrigin-Name: 18984c321049a759f6619cfa17fb3f4e7b3e08ea
 2014-07-29 05:49:02 +00:00
mistachkin
fc129698e0 Add some asserts to the Win32 mutex subsystem. 
FossilOrigin-Name: e8f2dc5fadae96252649875c234fcdef1108bd48
 2014-07-29 00:42:39 +00:00
drh
2b49327d08 Fix the build on windows. 
FossilOrigin-Name: 2773a5f9879a106a89a3d0bc3c5bfdcb2fe43c7c
 2014-07-29 00:23:08 +00:00
drh
bde27aaa5a Remove an unnecessary parameter from vdbeMergeEngineStep(). Rename a couple 
other routines to be more descriptive of what they do.

FossilOrigin-Name: f2407a40f339fa6c2cec194f78ae7c93655b1ec1
 2014-07-28 20:16:41 +00:00
drh
d906514d98 Rename vdbeIncrMergerInit() to vdbeMergeEngineInit() - a much more accurate 
name.

FossilOrigin-Name: 5b084a2dd581141b2d0cd9d1a5975625f65ec34d
 2014-07-28 19:58:41 +00:00
drh
8a4865f139 In vdbesort.c, rename vdbeSorterDoCompare() to vdbeMergeEngineCompare() and 
move it closer to the one place where it is called.  Other minor comment
changes.

FossilOrigin-Name: 09d50d9f0fe7df26dadb0a332731683a07a89fde
 2014-07-28 18:57:40 +00:00
drh
a4c8ca049e In vdbesort.c, rename all pointers to sqlite3_file objects "pFd" and use the 
name "pFile" only for pointers to SortFile objects.  Other comment enhancements.

FossilOrigin-Name: 518290a7fc0994f9593c5c3ba5b2610a1b86dae1
 2014-07-28 17:18:28 +00:00
drh
966d9f267f Merge recent trunk changes into the threads branch. 
FossilOrigin-Name: 163c247bd8280ab14fe577329c631c8bd884707f
 2014-07-28 15:01:37 +00:00
drh
ac65196e4d Improvements to comments in the multi-threaded sorter. Also include a 
function name change for clarity.  And add a test to help show that the
MergeEngine object is only used by a single thread.

FossilOrigin-Name: 9af50a878f67c1c2a4f1520160cc989650d7196a
 2014-07-28 14:54:50 +00:00
drh
e6bc1ef68f Remove an unreachable branch from the sqlite3_value_numeric_type() interface. 
FossilOrigin-Name: 5350229b52b18a4961858a30538c5c75e5bd3048
 2014-07-26 20:12:56 +00:00
drh
975b4c6e8b Avoid unnecessary no-op calls to applyNumericAffinity() for a small 
performance improvement.

FossilOrigin-Name: 413d7287977702fa651c0140bd5cf29021fe3e79
 2014-07-26 16:47:23 +00:00
drh
eac5bd7870 Try to fix harmless compiler warnings reported by Fortify. 
FossilOrigin-Name: e0fa6fdc14ac5458f9200cbae124f8025ea534ea
 2014-07-25 21:35:39 +00:00
drh
5dad9a3497 Improved comments on VDBE opcodes, for better documentation. No code 
or logic changes.

FossilOrigin-Name: 2d32e4876e0b162730f81e5c2658be12d64a9a99
 2014-07-25 18:37:42 +00:00
drh
8af3f772c1 Add constraints (enforced only when SQLITE_DEBUG is enabled) on the use of 
OP_Next and OP_Prev.

FossilOrigin-Name: 2230c74f1efa591770176c9b40e920724a3c39e1
 2014-07-25 18:01:06 +00:00
drh
f8c7e053ed Improve the performance of the ANALYZE command by taking advantage of 
UNIQUE constraints on indices.

FossilOrigin-Name: 114dcf33670fd98a1ebbac0e44f66b2d8bcccddf
 2014-07-24 23:23:26 +00:00