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Author SHA1 Message Date
drh
1c2c0b776f Avoid redundant register loads during index key generation when doing a 
DELETE or INTEGRITY_CHECK on a table with multiple indices.

FossilOrigin-Name: 8f6e6149a165f516be6395fd753e163d52ffd52e
 2014-01-04 19:27:05 +00:00
drh
61019c7883 Omit OP_Close operations that occur immediately prior to OP_Halt and which 
cannot be jumped over.

FossilOrigin-Name: 874b7e9999811c288ad41d07709f88e458d2d497
 2014-01-04 16:49:02 +00:00
drh
54e2adb5f3 Improvements to the column-cache for nested AND/OR operators. 
FossilOrigin-Name: 4e725f53131d3584319c710c8710a068989543c6
 2014-01-04 15:17:04 +00:00
dan
8c7d4ddd5a Have FTS assign extremely high costs to plans that feature unusable MATCH constraints. This discourages the planner from choosing such plans, which lead to "unable to use function MATCH in the requested context" errors. 
FossilOrigin-Name: fa8be488a3ad290722dae7a1a7396c77277b2149
 2014-01-04 14:46:39 +00:00
dan
69014393f8 Instead of having the planner ignore plans with unusable MATCH constraints, have FTS assign extremely high costs to such plans in order to discourage the planner from using them. 
FossilOrigin-Name: 24f84b38131866f7b435ffe641bb2f6991a70db2
 2014-01-04 14:42:14 +00:00
dan
42899543f8 Have the planner detect cases where a MATCH constraint is applied to a virtual table, and ignore any plans that do not allow the virtual table implementation to implement the MATCH filtering. 
FossilOrigin-Name: 19f3208b26597625728d1ef716d4e44407cf96ac
 2014-01-04 14:16:06 +00:00
drh
5426d80948 Avoid some unnecessary OP_SCopy operations when inserting into a table 
with multiple indices.

FossilOrigin-Name: 429018b19cb525a4bb0843d20955457b53900d4b
 2014-01-03 16:03:43 +00:00
drh
759e858811 Try to factor constant subcomponents of the WHERE clause out of the loop. 
FossilOrigin-Name: 9d05777fe24e1a5ce71762de38db840931ef0bc8
 2014-01-02 21:05:10 +00:00
drh
762c1c4071 Avoid unnecessary affinity transformations when building indices using 
data from a table.

FossilOrigin-Name: 10d851353c2abeadbd2852c210a7ff9f7f513e5d
 2014-01-02 19:35:30 +00:00
drh
991a198511 Be more aggressive in optimizing constant conditional expressions. 
FossilOrigin-Name: b7e39851a75b87ebca747b26a39989560fd6362b
 2014-01-02 17:57:16 +00:00
drh
b00d862139 Try to detect process ID changes due to fork() calls in os_unix.c and 
reset the PRNG when a process ID change is detected.

FossilOrigin-Name: e1eba1fb09d7db49d77928bd115b27b8002ae640
 2014-01-01 15:18:36 +00:00
drh
fe98081e18 Enhance sqlite3_randomness(N,P) such that it resets the internal PRNG 
if N is less than 1.  Subsequent calls to sqlite3_randomness() will reinitialize
the internal PRNG by calling the xRandomness() method of the default VFS.

FossilOrigin-Name: a221aa82bb5496885fd0bf76e4601443799511de
 2014-01-01 14:00:13 +00:00
drh
3312348cf8 Add -I. to the main.mk makefile for building sqlite3.o and speedtest1. 
FossilOrigin-Name: cc72c5aec7fe93d4a1368517aab949dc98d33003
 2013-12-24 12:04:24 +00:00
drh
73d5b8f550 Move elements of the Vdbe object that are only used during statement 
preparation out into the Parse object.

FossilOrigin-Name: c289a253c0c053ac8fc344efe138262c327d8096
 2013-12-23 19:09:07 +00:00
drh
58c960816f Remove a stray tab character. 
FossilOrigin-Name: 25b8a1c9ba77df3b7c78cbce922cb593d661696d
 2013-12-23 11:33:32 +00:00
drh
eaf4f523a5 Remove a condition that is always in the logic that handles reading 
default values for columns.

FossilOrigin-Name: 895af097e71749f423b63ece17c5a4b4dfcd164d
 2013-12-22 22:45:14 +00:00
drh
6c1de308f2 Make sure the WhereLoop.aLTerm[] array is large enough when processing 
the skip-scan optimization.  Fix for ticket [520070ec7fbaac].

FossilOrigin-Name: 46d040591f27be01b1860344f8a268797fe344f4
 2013-12-22 20:44:10 +00:00
drh
25555506df Fix speedtest1.c so that in --explain mode it only outputs non-explain text 
for DDL statements.

FossilOrigin-Name: 2d2b3c4951dc2b8317d5ba8b5cf72b1f4a6668f6
 2013-12-21 17:14:58 +00:00
drh
685e3c481c Avoid compiler warnings by only enabling sqlite3ErrName() when 
SQLITE_TEST is defined.

FossilOrigin-Name: 862228e50534a6b89c9498c4db664610db11485e
 2013-12-21 17:07:13 +00:00
drh
c73d0d9dec Fix harmless compiler warnings in FTS4. This involved corrupting 
Martin Porter's beautifully written and elegant stemmer code, making it
a little less beautiful and a little less elegant.  Today is a sad
day.  But the warnings from GCC grow increasingly verbose and irksome
with each new release and so something had to be done.

FossilOrigin-Name: df05679838b571c16a7ab7e135f9564cd2d9647c
 2013-12-21 16:06:47 +00:00
drh
849a9d92ba Fix the ".echo on" dot-command of the shell so that it echos comments in 
addition to SQL statements and dot-commands.  Add the --explain option
to speedtest1 so that the output can be piped into the command-line shell
to show nicely-formated VDBE code for the entire test.

FossilOrigin-Name: 96397263f94256e284aae9506de1fc48fea89193
 2013-12-21 15:46:06 +00:00
drh
ae28d6efc6 Add a case to speedtest1.c that demonstrates the need to factor OP_Column 
operators out of inner loops.

FossilOrigin-Name: 69a17336fdf4ae891e815914be8942f7222230c2
 2013-12-21 00:04:37 +00:00
drh
a47941fe42 Fix compiler harmless warnings in tclsqlite.c that appeared with GCC 4.8.x. 
FossilOrigin-Name: d93ae6833a7fca0672caf902a7b48846e54242cd
 2013-12-20 18:57:44 +00:00
drh
d42ef839bc Code simplification in sqlite3GenerateIndexKey() by making use of a subroutine 
found over in expr.c.

FossilOrigin-Name: 0026d3355340d66687a3fd4cbece28811ef1b505
 2013-12-20 18:44:35 +00:00
drh
4eded604ea Combine adjacent single-register OP_Copy instructions into a single 
multi-register OP_Copy, where possible.  Fix the Synopsis comment for
multi-register OP_Copy instructions to show the correct register ranges.

FossilOrigin-Name: 2ae22dc0cbed2feca4baf89d02aaace0331971d6
 2013-12-20 15:59:20 +00:00
drh
aed1819875 Allow any arbitrary expression as the filename in an ATTACH statement, 
including functions and subqueries.

FossilOrigin-Name: df70a1f30393b34146d6b8bf1df5a76aaf362efe
 2013-12-20 14:48:12 +00:00
drh
7e61d18eb4 Simplify the accumulator reset for aggregate query processing so that it 
uses a single multi-register OP_Null rather than a separate OP_Null for each
register.

FossilOrigin-Name: 2c7fd9b043f5f3d9d8e22dbefa84a9770ca951d0
 2013-12-20 13:11:45 +00:00
dan
1001ee8819 Do not inject OOM faults into SQLITE_FCNTL_COMMIT_PHASE_TWO file-control invocations. It causes problems for test scripts. 
FossilOrigin-Name: 8eb28d23e353139d24a8af78309d39249ab9eaf0
 2013-12-19 17:04:58 +00:00
drh
f6b1a8e1a5 Make sure errors encountered while initializing extensions such as FTS4 
get reported out from sqlite3_open().  This fixes a bug introduced by
check-in [9d347f547e7ba9].  Also remove lots of forgotten "breakpoint"
commands left in test scripts over the years.

FossilOrigin-Name: ca3fdfd41961d8d3d1e39d20dc628e8a95dabb2f
 2013-12-19 16:26:05 +00:00
drh
a021f121c9 Remove an unneeded column-cache flush in aggregate SELECT 
and an unreachable branch in the INSERT logic.

FossilOrigin-Name: ffa092e13b3781677b18418cca40e3dd1e388aed
 2013-12-19 14:34:34 +00:00
drh
edfac3456e Omit an unnecessary OP_Null opcode from UPDATE. 
FossilOrigin-Name: 72d111336c5016e5b5092dfebcd01253266a7685
 2013-12-19 02:56:01 +00:00
drh
46d03fcbfc Omit one or more pointless instructions that occur in between OP_NoConflict 
and OP_Halt.

FossilOrigin-Name: 61e2f3575c4a94f9571c28fb2bd19da84b0edceb
 2013-12-19 02:23:45 +00:00
drh
935c34711b Remove an unnecessary column-cache flush operation. Add code to trace the 
column cache when compiled with SQLITE_DEBUG and using
PRAGMA vdbe_addoptrace=ON.

FossilOrigin-Name: 58704ed1f4cd78bb3b0c095ffd1626906a95a413
 2013-12-18 18:44:43 +00:00
drh
039468ef2d Remove an unnecessary column-cache flush. Add another test case to the 
speedtest1.c program to accentuate the benefit of not flushing the cache at
that point.

FossilOrigin-Name: 97fdfc6b79833011fc0c506fe5e0985c0fb1906c
 2013-12-18 16:27:48 +00:00
drh
9ac7962ace Show changes to the column cache when PRAGMA vdbe_addoptrace=ON is set. 
FossilOrigin-Name: 4c6a659c432e4f7c0285f58675a67f967b07bb0d
 2013-12-18 15:11:47 +00:00
drh
3a8aec5e13 Add evidence marks and additional test cases for the printf() SQL function. 
FossilOrigin-Name: 93121d3097a43997af3c0de65bd9bd7663845fa2
 2013-12-17 16:32:56 +00:00
drh
afa5af807c Add the printf() SQL function. 
FossilOrigin-Name: a1bb62f91a85af0584100c3ad77877a949c30cca
 2013-12-17 16:10:57 +00:00
drh
fc6ee9df22 Fix the formatting of %c in the printf() SQL function. 
FossilOrigin-Name: 3375571a5e267744c19a7c310840256cec57a242
 2013-12-17 15:58:42 +00:00
drh
a5c1416d64 Add the printf() SQL function. 
FossilOrigin-Name: 6db7052eeefafdbf26b3153bc38600fecfb53ae6
 2013-12-17 15:03:06 +00:00
drh
4a8ee3dfe2 Allow the SQLITE_DETERMINISTIC flag to be ORed into the preferred text encoding 
of application-defined functions, to mark the function as deterministic.

FossilOrigin-Name: 5716fc2341ddd8cf64139e7168597f864da4e10b
 2013-12-14 13:44:22 +00:00
drh
5dee6afcac Performance optimizations in the pager_write() routine of pager.c. 
FossilOrigin-Name: bc5febef921bd12ca7760e9d07d3be0e67140320
 2013-12-13 20:45:50 +00:00
drh
16f9a81125 Reduce the number of calls to the subjRequiresPage() routine inside of pager. 
FossilOrigin-Name: e50ff39a93a51b5a5be4f0e82a76104b81c9e2a4
 2013-12-13 19:48:04 +00:00
drh
da8a330a03 Create and use a new pager interface sqlite3PagerUnrefNotNull() that works 
just like sqlite3PagerUnref() but guarantees that its argument is not a
NULL pointer.

FossilOrigin-Name: e00f37e2333cac5b53e17cf764ab56c4fcd5f617
 2013-12-13 19:35:21 +00:00
drh
5d56dd2867 Enhance the pcache1PinPage() routine so that it called much less often and 
runs much faster in the cases when it is actually called.

FossilOrigin-Name: a845779cd31aec3204a6a9c776bd9c9f7d47dd24
 2013-12-13 18:50:40 +00:00
drh
40f22bed06 Avoid unnecessary calls to sqlite3_free() from within sqlite3VXPrintf(). 
FossilOrigin-Name: e2a8b280e84c1f8fd6106d9427e1ad6cbcfccd10
 2013-12-13 16:42:18 +00:00
drh
a3cc007df4 Simplication and optimization of error message handling. 
FossilOrigin-Name: 9d347f547e7ba9590b0c68edf50a14ad94a2bb92
 2013-12-13 16:23:55 +00:00
drh
a5f40593be Add the SQLITE_FCNTL_SYNC and SQLITE_FCNTL_COMMIT_PHASETWO file-controls 
and have the pager call them at appropriate times.  This is needed in order
to enable ZIPVFS to do multi-file atomic commits.

FossilOrigin-Name: 552f94d50f08cf11f33205730fde52bc2f06cff6
 2013-12-11 15:47:39 +00:00
drh
07c5d0a901 Merge in the latest trunk changes. 
FossilOrigin-Name: 9ff4dfe1e36b40e386858b03f36cfab8f6806fdd
 2013-12-11 14:17:06 +00:00
drh
a81ad1758c Fix a bug in the shell ".import" command: Do not end the field 
when an escaped double-quote occurs at the end of a CRNL line.

FossilOrigin-Name: 5e239ecda0f7835ce037b38b04627a574b5854cd
 2013-12-11 14:00:04 +00:00
drh
39325bac1b Remove an unreachable conditional inserted by the previous check-in. 
FossilOrigin-Name: 3e1d55f0bd84810a035bd6c54583eb373784a9a3
 2013-12-11 12:02:55 +00:00