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12461 Commits

Author SHA1 Message Date
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
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
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
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