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12771 Commits

Author SHA1 Message Date
drh
defb8223b4 Fix a problem causing an inaccurate stat4-based estimate for the 
number of rows visited by a range scan.

FossilOrigin-Name: a9daf3ac444b896013f4054051937d49a597624a
 2014-08-28 17:30:28 +00:00
drh
b34fc5be6d Add a testcase() macro to help verfity the row estimation logic. 
FossilOrigin-Name: 6ba609522ea7325341fad93bdb5f869c6506dea4
 2014-08-28 17:20:37 +00:00
dan
7fa0631ece Fix a problem causing an inaccurate stat4-based estimate for the number of rows visited by a range scan. 
FossilOrigin-Name: 052d89b554a947b7e420b7feb6650f5069b7cefa
 2014-08-28 16:01:31 +00:00
drh
5418b1298f Fix a formatting error ("%d" needed in place of "%g") on a WHERETRACE 
macro inside of the query planner.  This fix applies to debugging logic
only.

FossilOrigin-Name: c931ca2b7763cf894ece26ca4775d638876107e9
 2014-08-28 13:42:13 +00:00
drh
bc59ac0e26 Refactor the sqlite3PcacheFetch() routine into three separate routines, 
which are significantly faster overall and about 100 bytes smaller in
size as well.

FossilOrigin-Name: bdb6e4978d1a26d5f795262172605184264ede9c
 2014-08-27 23:18:01 +00:00
mistachkin
a1dc42aa91 Add a VDBE synopsis comment for clarification. 
FossilOrigin-Name: 029a6dc744c24e7be482298c678af8a115d6a87b
 2014-08-27 17:53:40 +00:00
dan
54ae4e3179 Add a missing ticket number to a comment in index7.test. 
FossilOrigin-Name: d8b1c4336145d436241863c3525530e24a24799b
 2014-08-27 17:48:15 +00:00
dan
0829169f1e When determining whether or not a partial index is usable, do not assume that the cursor number assigned to each table in the query is the same as its index in the FROM clause. Fix for ticket [98d973b8f5]. 
FossilOrigin-Name: fcebca166f15431764b82a8b267f11d28386e975
 2014-08-27 17:37:20 +00:00
drh
9bd038f12e In the sqlite3_context object, keep a pointer to the result value rather 
than storing the result value in the sqlite3_context object and using
memcpy() to move the value back into its register
after the function returns.  This runs faster and saves over 500 bytes
of code space.

FossilOrigin-Name: 6c1ee3e388eb110de815270467b1e50592c0ba6c
 2014-08-27 14:14:06 +00:00
drh
6c9f8e67de Factor out the exception paths from sqlite3ValueToText() into a separate 
function so that the main routine is much faster for the common case of
no required type or encoding conversions.

FossilOrigin-Name: 1624916c6e9bc5dbcfa146b316a99ac8fecb13a9
 2014-08-27 03:28:50 +00:00
drh
b63388b6a4 Performance enhancement in sqlite3VdbeMemNulTerminate(). 
FossilOrigin-Name: f94cacc393e895522b92c9717c53357afc918d60
 2014-08-27 00:50:11 +00:00
drh
c3031c61ef Change the page cache so that a new sqlite3_pcache object is allocated as 
soon as the page cache is opened, not delayed until the first fetch request.
This give a noticable performance boost.  The interface between pager and
the page cache has changed slightly, which might break ZIPVFS.

FossilOrigin-Name: f1f94a971e031e784f8c30a6faf829df58709329
 2014-08-26 15:06:49 +00:00
drh
028696c4cc Remove the SQLITE_CONFIG_WORKER_THREADS configuration parameter. The number 
of worker threads in the sorter is now determined only by the
PRAGMA threads=N setting.

FossilOrigin-Name: e3305d4b4efcbe06945ce7f6ec0f2e864244aaf9
 2014-08-25 23:44:44 +00:00
drh
6c4ec84256 Merge the CAST operator enhancements from trunk. 
FossilOrigin-Name: 6c8f86e4e08d5d57e21496277613e0f9dcc06514
 2014-08-25 22:43:17 +00:00
drh
05bbb2e824 Add an assert() and five testcase() macros to the OP_Cast opcode implementation 
to help verify that it is fully tested.

FossilOrigin-Name: af364cce9da0961593ef876b646197f82df08ad5
 2014-08-25 22:37:19 +00:00
drh
ec3e4f753b Minor changes to the CAST logic to make it more testable. 
FossilOrigin-Name: 1ad70ec550c004160d9c0c57e6c416812cdead5e
 2014-08-25 21:11:01 +00:00
drh
21b0e73354 Test cases added for using unary "+" and CAST operators on the RHS of range 
constraints and verifying that STAT3/4 can use those constraints.

FossilOrigin-Name: 42505e5a810832442699ca54a46637c50e7f9e71
 2014-08-25 20:21:07 +00:00
drh
4169e430a2 Allow CAST expressions and unary "+" operators to be used in the DEFAULT 
argument of an ALTER TABLE ADD COLUMN and to be understand on the RHS of
range constraints interpreted by STAT3/4.  This involves a rewrite of the
implementation of the CAST operator.

FossilOrigin-Name: 91d8a8d0b792ea5c4fe68fd9caaf3345eddea486
 2014-08-25 20:11:52 +00:00
dan
f741e0491e In cases where stat4 data is available but cannot be used because the rhs of a range constraint is too complex a expression, fall back to using the default estimates for number of rows scanned. 
FossilOrigin-Name: e06dc6f0c35f87c44292c71677111b74f073a5c4
 2014-08-25 18:29:38 +00:00
drh
034596153d Query or change the maximum number of worker threads allowed on each 
database connection separately using the "PRAGMA threads" command.

FossilOrigin-Name: 29c5e8a7c9d7ce349a1e1d72082d23450e877b45
 2014-08-25 15:13:22 +00:00
drh
4d015c6902 Merge the recent performance enhancements implemented on trunk into the 
threads branch.

FossilOrigin-Name: dfdc900f5d1a31ee5c5f35a630c4a8253e69093b
 2014-08-25 13:27:02 +00:00
drh
c137807a87 Remove the pager_lookup() function since it is redundant with 
sqlite3PagerLookup().

FossilOrigin-Name: 54164ce47cfc3ad5dd8797114e4ba78811f23bef
 2014-08-25 11:33:41 +00:00
drh
12b7c7d8c3 Change the name of the VdbeMemRelease() macro to VdbeMemReleaseExtern() to 
more accurately reflect what it does.  Performance enhancement to the
sqlite3VdbeMemRelease() function.

FossilOrigin-Name: 3ca5846da7da5e08192a4c96288197be3b7ab6f7
 2014-08-25 11:20:27 +00:00
drh
4274dae9e9 The sqlite3VdbeChangeEncoding() routine goes about 3x faster if the 
sqlite3VdbeMemTranslate() subroutine is not inlined.

FossilOrigin-Name: 0c7e1b875a14ff9d71af7bb125a0272a23d57353
 2014-08-24 02:53:23 +00:00
drh
f063e08fd9 Patch the sqlite3PagerWrite() method in the Pager to run a bit faster. 
FossilOrigin-Name: c63311e2f3344363a5ed99838fb5850004eaee30
 2014-08-24 01:32:43 +00:00
drh
efbf044583 Faster implementation of pcache1Fetch() 
FossilOrigin-Name: 0371cc3bb07448bcd64fd671f3e71bb7f30deb4d
 2014-08-23 23:15:31 +00:00
drh
b50c65d561 Faster implementation of the sqlite3ApiExit() routine. 
FossilOrigin-Name: bd41d394d48516eb7d8ddc46abdcb427aa80173e
 2014-08-23 20:25:53 +00:00
drh
b4586f1254 Another memory allocator performance optimization. 
FossilOrigin-Name: 6da6f46d0c43e3b68c21f514ddf8ee663c20f249
 2014-08-23 19:42:06 +00:00
drh
3bdffddc41 Fix a variable-declaration after code problem in btree.c. Harmless in 
GCC and CLANG but unacceptable for MSVC.

FossilOrigin-Name: 45abd5c0bad2847861f3b26a7040490aa9bb1332
 2014-08-23 19:08:09 +00:00
drh
3ccd5bf89e Changes to sqlite3ScratchMalloc() that make the entire memory allocation 
interface a little faster and about 100 bytes smaller.

FossilOrigin-Name: f83daa16f65ef35062412e88c214852a4aeb3da2
 2014-08-23 19:04:55 +00:00
drh
9de4a17185 Make the implementation of the sqlite3_aggregate_context() interface faster 
for second an subsequent invocations.  This helps all aggregate functions to
perform better.

FossilOrigin-Name: 802148f3110462eac939d53ce08eb9a2f6aac739
 2014-08-23 18:17:19 +00:00
drh
f1a89ede4a Improved performance in the type handling of arithmetic operators in the VDBE. 
FossilOrigin-Name: 0c0a603950c97837442d82886f947aab0acbd805
 2014-08-23 17:41:15 +00:00
drh
bd9507c8da Performance optimization in the applyAffinity() logic inside the VDBE. 
FossilOrigin-Name: 25f2246be404f38b4f8dd70397cd1454d46358c4
 2014-08-23 17:21:37 +00:00
drh
6848dad894 Another performance tweak: Split the sqlite3BtreeCursorHasMoved() routine 
into two with the second routine named sqlite3BtreeCursorRestore().  The first
now only reports whether or not the cursor has moved and the second tries to
restore the cursor.  This allows the sqlite3VdbeCursorMoveto() routine to be
refactored to avoid stack pointer movements, for a noticable performance gain.

FossilOrigin-Name: ce123b5c592556a8cd38b01fcc91ba76231d3098
 2014-08-22 23:33:03 +00:00
drh
637f3d83b9 Factor the saveAllCursors() routine of btree.c into two separate routines, 
for a noticable performance improvement.

FossilOrigin-Name: 3eb084390382c108e9b0ff0b29dede58ebb149bc
 2014-08-22 22:26:07 +00:00
drh
75e2a2d362 Performance enhancements in the b-tree mutex logic. 
FossilOrigin-Name: 8914530644f938a7a98e25ea1fb0bca1f9d79101
 2014-08-22 21:58:10 +00:00
drh
a8dcba9199 Combine the pcacheAddToDirtyList() and pcacheRemoveFromDirtyList() routines 
into a single pcacheManageDirtyList() routine.  The resulting binary code is
slightly faster and a few bytes smaller.

FossilOrigin-Name: 6bcf1af6a48dbda5ac6f6b3b02810bdfc4730000
 2014-08-22 20:35:29 +00:00
mistachkin
31753c833d Revise #ifdef ordering to prefer the ANSI version of GetVersionEx, when available. 
FossilOrigin-Name: 9fe0f0754c063c17fffa9d4814b7180397cf5226
 2014-08-22 19:12:16 +00:00
drh
2f2b2b8580 Performance enhancement in sqlite3PutVarint(). 
FossilOrigin-Name: a929be551924144c9bc7aab608404d59e479abb5
 2014-08-22 18:48:25 +00:00
drh
13f40da31d Split the sqlite3Error() routine into sqlite3Error() and 
sqlite3ErrorWithMsg(), for a slight size reduction and performance increase.

FossilOrigin-Name: cf561d1f0bb60b3d638632d20bd686dda4fa4a04
 2014-08-22 18:00:11 +00:00
drh
172087fb73 Performance improvement in the printf() logic by avoiding unnecessary stack 
pointer movement.

FossilOrigin-Name: f7f2160db014f0ae11ad13c8ad70ad3444124e3e
 2014-08-22 15:40:20 +00:00
drh
738d190dd8 Improve the performance and reduce the size of the sqlite3VdbeSerialGet() 
routine by avoiding the use of stack.

FossilOrigin-Name: ebc10e46c15017d7cd232b5f4f3ef67ef740d87f
 2014-08-22 15:19:59 +00:00
drh
8932becbef Handle the 4-byte integer case in the stackless routine. 
FossilOrigin-Name: 3f55484e81000c75e231f5580632a68e782ded4f
 2014-08-22 14:56:13 +00:00
drh
14a924a5cd Get the sqlite3VdbeSerialGet() routine to run faster by avoiding the use 
of local variables.

FossilOrigin-Name: 8267d82174099e548a4f78d06af0c6324c89b83d
 2014-08-22 14:34:05 +00:00
drh
3f5b199eb5 Change a while-loop into a do-loop in sqlite3VdbeSerialPut() for a small 
size reduction and performance improvement.

FossilOrigin-Name: 750bb0a0960606ab24037e0992e9f7a17524cc3e
 2014-08-22 13:22:32 +00:00
drh
5ab567078a Enhance the spellfix extension with the ability to specify a rowid when 
inserting new rows.

FossilOrigin-Name: 369c480cda6fa66394b995346bbf51f3298446e1
 2014-08-22 11:11:30 +00:00
drh
acbcb7e013 Simplify the interface to the symbol table, saving 600 bytes of code space. 
FossilOrigin-Name: 14b0f561fe15622b61c6676c9c455dca6b9ba5f0
 2014-08-21 20:26:37 +00:00
mistachkin
cf4200a170 For sqlite3_win32_is_nt(), assume WinRT is NT-based. 
FossilOrigin-Name: 2f59e71fbf31d2bd788d11197943b2ff3f4046e1
 2014-08-21 19:11:17 +00:00
drh
b6b4b79f34 Fix a faulty assert() statement. Add comments to clarify the behavior of 
the sqlite3OpenTableAndIndices() routine in insert.c.  Add test cases to
verify that the assert() statement is not firing inappropriately.
Ticket [369d57fb8e5ccdff06f1].

FossilOrigin-Name: 7029b3404d3f5f698a496934f3a3f2972051b257
 2014-08-21 14:10:23 +00:00
drh
b614eab3d2 Increase the version number to 3.8.7 
FossilOrigin-Name: 91594aae0725388765070c80039dfe1bf126392d
 2014-08-20 23:42:50 +00:00
drh
f3f69ac942 Enhancements to skip-scan such that it is operable when a middle column of 
an index is skipped while the left-most column is constrained in the WHERE
clause.

FossilOrigin-Name: bc985caa7816f1f873ad8e4467c5278399f315ce
 2014-08-20 23:38:07 +00:00
drh
7bc4c454da A small performance improvement in freeSpace() by special-casing the 
relatively common case of an empty freelist.

FossilOrigin-Name: 49f44d355ff70744e4951baca2481c7c2b6c02b3
 2014-08-20 18:43:44 +00:00
drh
5f5c753efb Reimplement the freeSpace() routine in btree.c so that it runs faster. 
FossilOrigin-Name: fe4fd014b42b7b158ca968f1535b5636c67769f6
 2014-08-20 17:56:27 +00:00
drh
7fb91646b5 Refactor local variable names in the freeSpace() routine of btree.c for 
improved understandability.

FossilOrigin-Name: 7e63089a191f29aefde05e89bb612f3036cfa034
 2014-08-20 14:37:09 +00:00
drh
a13d5072c4 Size reduction and performance improvements in btree.c and the 
allocateSpace() routine.  Also fix an assert() in freeSpace().

FossilOrigin-Name: 121308fa869ad490a6924798d276c0ff32759acc
 2014-08-20 13:35:45 +00:00
drh
fb90841adf Add SQLITE_API macros in front of interface routines in the test_intarray.c 
extension.

FossilOrigin-Name: eea0661798e10018615854c871f24be0f8bb2ff9
 2014-08-20 13:25:06 +00:00
drh
905552628c Change an assert() added by the previous commit into a testcase(). 
Fix a separate assert() in btree.c:freeSpace().

FossilOrigin-Name: fe51d3aa0ce7021213293a0647e31164073e78f7
 2014-08-20 13:17:43 +00:00
drh
4c04f3c8bd Further size reduction and performance improvement in btree.c:allocateSpace(). 
FossilOrigin-Name: 1cb1cd64930a6bc371143f7d2e77eb1c51498cb0
 2014-08-20 11:56:14 +00:00
dan
53d89cdfe9 Fix a typo in the showdb usage message. 
FossilOrigin-Name: 6c66beae97ba1799c908d3a33371dedbc7f3f58c
 2014-08-20 10:42:16 +00:00
drh
75b31dc9ad Minor performance improvement and size reduction for the btree-page space 
allocator.

FossilOrigin-Name: 73637d12e31f5489efe37d8cf4ab50a1911d4c75
 2014-08-20 00:54:46 +00:00
drh
dfd1547b48 Modify the memsubsys1-3.1.4 test so that it does not fail arbitrarily due 
to variations in the behavior of system malloc().

FossilOrigin-Name: d280157da0b5275f3e3c875d2dcfb9998d374ac0
 2014-08-19 23:04:49 +00:00
drh
5f58ae75c9 A better fix for the sqlite3_trace() problem. 
Ticket [11d5aa455e0d98f3c1e6a]

FossilOrigin-Name: 44d5bd4cc3f76e9a151ba0abae1092bd184af264
 2014-08-19 20:41:36 +00:00
drh
2c7946a485 Make sure the sqlite3_trace() callback is invoked, even if the prepared 
statement was marked "expired" before it ever entered sqlite3_step().
Ticket [11d5aa455e0d98f3c1e6a08].

FossilOrigin-Name: 0d4d3df4bc5e75ce1543b5539a1e9e279d2a062f
 2014-08-19 20:27:40 +00:00
drh
4b2590e44b Improvements to output formatting with the ".trace" command in the 
command-line shell.

FossilOrigin-Name: d09d63c07748839e9b778a769b183bdd614c6c13
 2014-08-19 19:28:00 +00:00
dan
edf5b1657d Minor changes to do with the Tcl tea extension package autoconf system. 
FossilOrigin-Name: f10a6111262ce6ee6984c64fa0e0023642eca27d
 2014-08-19 09:15:41 +00:00
drh
dcd87a9dd3 Refactor the names of state objects in the command-line shell implementation.. 
FossilOrigin-Name: 11a70e1ae7f05d06e4e09c9d20db0444b8881584
 2014-08-18 13:45:42 +00:00
drh
ef1d614b90 Fix compiler warnings on WinCE. 
FossilOrigin-Name: 28a379fcd43389ad3249eff51a621d0bb7c81640
 2014-08-15 16:13:07 +00:00
drh
8d09dfe8f3 Merge the 3.8.6 release into the threads branch. 
FossilOrigin-Name: 05807c4122505567ec64fb2d142077f48a0a10b1
 2014-08-15 15:46:21 +00:00
drh
932de71e39 Version 3.8.6 
FossilOrigin-Name: 9491ba7d738528f168657adb43a198238abde19e
 2014-08-15 11:46:33 +00:00
dan
f216e324f9 Fix an assert that can fail if the database file is corrupted. 
FossilOrigin-Name: 3f45b8192dad7fb1f027cbaa694046e3c1b3e278
 2014-08-14 19:53:37 +00:00
mistachkin
ce64d61050 Fix compiler warnings on WinCE. 
FossilOrigin-Name: cc910b8e0c45e7387024f3a729003e2fef08b198
 2014-08-14 18:31:56 +00:00
drh
83b25d32d7 Merge the pre-3.8.6 changes into the threads branch. 
FossilOrigin-Name: a608fd1d52606a009c3acc7f1d184b86a7df3c82
 2014-08-14 14:02:48 +00:00
drh
4ed2fb9d84 Fix typos in comments used to help generate documentation. No changes to code. 
FossilOrigin-Name: 13a2d90a2869c53b79754de39045bbbdbc7688e3
 2014-08-14 13:06:25 +00:00
mistachkin
cf4312c9ad Add icon to the Windows shell executable. This is a resource change only, no changes to code. 
FossilOrigin-Name: f5cce9db109a2bbe9a05b4c01b076a51d5fad8ba
 2014-08-14 02:59:51 +00:00
drh
bd9455457a Minor change to unixDelete for VxWorks with a DOS filesystem. 
FossilOrigin-Name: f01d42cc8b00d2b7c4f14defcb05fdc493cf1bfd
 2014-08-13 11:39:42 +00:00
dan
299b24688a Fix where9.test so that it works with the "no_optimization" permutation. 
FossilOrigin-Name: d46adf9d8f741838b9c30f915231d6a3986c3591
 2014-08-12 20:13:22 +00:00
mistachkin
4eb4fefe2d Fix compilation issue in the Win32 VFS when manually defining SQLITE_WIN32_NO_ANSI. 
FossilOrigin-Name: 6715991296886c2a02b9a285a1e61189ad1f79c0
 2014-08-12 16:13:37 +00:00
drh
81e069eee5 Improve the comments associated with SQLITE_TEST_REALLOC_STRESS and add 
an extra assert() to prove an assumption.

FossilOrigin-Name: 35c454616321d480ecbc4efdf6869bbcdf0d3aa2
 2014-08-12 14:29:20 +00:00
dan
d79d27aeda Run a test with TEST_REALLOC_STRESS and OMIT_LOOKASIDE defined as part of releasetest.tcl on Linux/x86-64. 
FossilOrigin-Name: a1baf3a7b177728cdfcd6d9345a0d6bf0a8887c0
 2014-08-12 14:06:13 +00:00
dan
76ccd89d13 If SQLITE_TEST_REALLOC_STRESS is defined, extend the op-code array used by virtual-machine programs by one element at a time, instead of doubling its size with each realloc(). 
FossilOrigin-Name: 4c291827224b84487a38e7ccba2edabc0f15b5ba
 2014-08-12 13:38:52 +00:00
drh
61ffea5490 Fix typos in the VxWorks code of os_unix.c. 
FossilOrigin-Name: 19682e8fdc4a3b7884dba3e4387763e435ec16e6
 2014-08-12 12:19:25 +00:00
dan
793bd861fe Add a test to ensure that the problem fixed by [a179e41e40] does not recur. 
FossilOrigin-Name: 31356f2cae26278660e6bd360ad35e57261d977c
 2014-08-12 09:36:08 +00:00
drh
fcf2a7757e Fix an assert() statement in the SELECT code generator that was 
incorrect following an OOM error.

FossilOrigin-Name: a179e41e40dba4c19a488985f77777acd27b689d
 2014-08-12 01:23:07 +00:00
mistachkin
f0740a947d Modify GetVersionEx Win32 VFS fix for use with the test suite. 
FossilOrigin-Name: fd2221768b45d9006bbb2919a4977cf2791826d6
 2014-08-11 17:51:23 +00:00
drh
e5e20d354d Further clarification and typo fixes for the previous comment change. 
FossilOrigin-Name: 87ef9e2f293afd89901fed6be45b0f0052df6846
 2014-08-11 17:41:53 +00:00
drh
c96c7e3c15 Clarify the comment explaining the meaning of the SQLITE_WIN32_GETVERSIONEX 
macro in the Windows VFS.

FossilOrigin-Name: 69714287dbbdbf4ef2a2c5e99ed740ae7d27e051
 2014-08-11 17:40:30 +00:00
mistachkin
91d1249748 Fix for #ifdef issue with GetVersionEx in the Win32 VFS. 
FossilOrigin-Name: 1a0d466dd48163c86de4774035fe4a30c1c55311
 2014-08-11 17:38:38 +00:00
drh
9f959b07de Add a few more requirements tests. 
FossilOrigin-Name: b5652439d5d770f0edeb80c8f55fa7cc515482e3
 2014-08-11 17:37:27 +00:00
drh
ddb17cae38 Updates to evidence marks and requirements. No changes to code. 
FossilOrigin-Name: 62d38308b519a5362f559b296a0cf1acccf8f673
 2014-08-11 15:54:11 +00:00
drh
490fe86f1a Fix harmless compiler warnings. 
FossilOrigin-Name: 52b03f045edf6fc29f9ba9a5cac53a59f0feb0eb
 2014-08-11 14:21:32 +00:00
drh
91be7dc320 Changes that will perhaps enable SQLite to work better on VxWorks. 
FossilOrigin-Name: de27c742c0dcda20b51339598bf6094a8dcf5fb9
 2014-08-11 13:53:30 +00:00
drh
e8a537eea7 Update requirements marks. No changes to code. 
FossilOrigin-Name: 7556bd9aa5db1b9cd92d0e48effcda9fe96f3128
 2014-08-08 18:26:20 +00:00
drh
ee5141de47 Improvements to the way the query planner handles sorting costs, so that 
very large sorting costs do not overwhelm the loop costs.

FossilOrigin-Name: bdaa6947371a60a31b6a13267b0ba6e46df2a8ce
 2014-08-08 17:49:55 +00:00
dan
e2c278513d Fix a buffer overrun in the previous commit. 
FossilOrigin-Name: 43c59c85436dc8001c81f4aac7f5231b13d741cb
 2014-08-08 17:25:33 +00:00
dan
50ae31e6f6 Because SQLite internally calculates query plan costs using a logarithmic scale, very large estimated sorting costs can cause all other estimated costs to be rounded down to zero. In these cases break ties between plans with the same total cost by comparing the costs with sorting excluded. This is an alternative fix for the same problem as addressed by [2af630c572]. 
FossilOrigin-Name: 299b9570279ded7158d22349ef93384286a5c755
 2014-08-08 16:52:28 +00:00
drh
3c19bbea0a The SQLITE_IOERR_BLOCKED extended error code is not longer used, so remove 
assert() statements and documentation for that error code.  Also make other
documentation improvements.

FossilOrigin-Name: 36b7c5cefcad6bad044806092593c84876fee8bc
 2014-08-08 15:38:11 +00:00
drh
1d8ba02445 Reworking the documentation on integer result codes. This is a comment 
and documentation change only.  There are no changes to code.

FossilOrigin-Name: 54f1df7b63166f14b2f0d5955c546820e5cbdec9
 2014-08-08 12:51:42 +00:00
drh
b562f63c1b When the estimated sorting cost overwhelms the estimated lookup cost, ensure 
that lookup costs are still taken into account when selecting a lookup
algorithm.

FossilOrigin-Name: 2af630c5720a4d71f22a952af29346a09bd8dfd0
 2014-08-07 20:42:33 +00:00
drh
f2a90306ca Clarify the computation of compatible isOrdered by in the plan solver of 
the query planner.

FossilOrigin-Name: b5e8fd575a80334160de0aac8084ed5cd28816a5
 2014-08-07 20:37:01 +00:00
drh
b28ce65f45 Remove the extraneous debugging printf() from the previous check-in. 
FossilOrigin-Name: 8f04d2c0084afa6381e78847c9aa296498d448cb
 2014-08-07 20:25:37 +00:00
drh
ddef5dc044 When the estimated cost to do a sort overwhelms the estimated cost to do 
individual table lookups, make sure that the table lookup costs are still
taken into consideration when selecting the lookup algorithm.

FossilOrigin-Name: ec5d84ba69c100d9565425ed74040a49e410ea03
 2014-08-07 16:50:00 +00:00
drh
858b638d1f A couple more harmless compiler warnings eliminated. 
FossilOrigin-Name: bcf6d775f90f4d1ba018a1b965f2f710df130f01
 2014-08-06 18:50:51 +00:00
drh
e8f2c9dc71 Fix two more harmless compiler warnings. Make sure the fts3_unicode2.c file 
is in sync with mkunicode.tcl.

FossilOrigin-Name: a2a60307ea68a3230952a56cb65369ba0a208967
 2014-08-06 17:49:13 +00:00
drh
5402710b0b Fix harmless compiler warnings. In the command-line shell, report if the 
".system" command returns a non-zero result.

FossilOrigin-Name: 1202e9771f6d699dbf5268368108a3527d06d799
 2014-08-06 14:36:53 +00:00
drh
ede7ae31f1 Fix an obsolete comment in the func.c source file. No changes to code. 
FossilOrigin-Name: 5c6bb57d90bad32785d6d9cdf110a825bbc5ec73
 2014-08-06 11:58:40 +00:00
drh
2abe6a281c On the windows VFS, do not try to make InterlockedCompareExchange an 
overloadable function, since sometimes it is a macro.

FossilOrigin-Name: ab1a751e1304749bef5bc5c833f9abed8950f7d0
 2014-08-06 11:57:54 +00:00
mistachkin
17835a5443 In the Win32 VFS, work around InterlockedCompareExchange() being a macro on some platforms (e.g. x64). 
FossilOrigin-Name: 7be244ce129d6502f3a3e3f3e8a1dd61ef71d878
 2014-08-06 03:06:01 +00:00
drh
da2e5862d1 Merge all recent changes from trunk. 
FossilOrigin-Name: a353a8515fb2eff86042d0c33e39772f4d04e0b3
 2014-08-06 02:03:35 +00:00
drh
bc5cf3813e Fix typos in the opcode documentation. Comment changes only. No changes 
to code.

FossilOrigin-Name: 717245d48714c08156c9b7636aaa6c3a402bad66
 2014-08-06 01:08:07 +00:00
drh
0c4de2d96d A simpler fix for ticket [3a88d85f36704eebe1] - one that uses less code. 
The error message is not quite as good, but as this error has apparently
not previously occurred in over 8 years of heavy use, that is not seen as
a serious problem.

FossilOrigin-Name: 0ad1ed8ef0b5fb5d8db44479373b2b93d8fcfd66
 2014-08-06 00:29:06 +00:00
drh
1cfc9aa993 Ensure that aggregate functions are not used when evaluating a default 
value for a table column.
Candidate fix for ticket [3a88d85f36704eebe134f7].

FossilOrigin-Name: 29ba812825bf06ef230f2480bba0579653f0a52d
 2014-08-05 21:31:08 +00:00
drh
42191f6248 Add the ability to evaluate IN operators as a sequence of comparisons as 
an alternative to the long-standing algorithm of building a lookup table.
Use the new implementation in circumstances where it is likely to be faster,
such as when the RHS of the IN changes between successive evaluations.

FossilOrigin-Name: 952868216854e8355edf57af62bd1a6bcb70ce61
 2014-08-05 19:16:22 +00:00
drh
2c5e35ffd1 Rename the internal Schema.flags field to Schema.schemaFlags. 
FossilOrigin-Name: 5ae80b3c8f032528359c8c762505ce24da8db96f
 2014-08-05 11:04:21 +00:00
drh
4336b0e64a Improved VdbeCoverage() macros. A few minor simplifications to generated 
VDBE code.

FossilOrigin-Name: 01f60027ad1841051fa493a646141445f8971357
 2014-08-05 00:53:51 +00:00
drh
2c3ea0694f Part of the change in the previous check-in was incorrect and can result 
in an incorrect UPDATE for WITHOUT ROWID tables.  This check-in fixes the
problem.

FossilOrigin-Name: ee5f6eae57a656d09a4b3f7fbef664b2c696ddb4
 2014-08-04 21:26:58 +00:00
drh
7248a8b2b9 Further enhancements to IN-operator processing. 
FossilOrigin-Name: 7fdf26da1d2f40b80f9e44ff6f5af22ace8f95f3
 2014-08-04 18:50:54 +00:00
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