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16,058 Commits 1,570 Branches 184 Tags
244b9d6ec67e84815d2f473b222b0dcb3ca657b3
Commit Graph

748 Commits

Author SHA1 Message Date
drh
244b9d6ec6 Performance optimization to sqlite3Dequote() and its callers. 
FossilOrigin-Name: 9efe2265b1e70172778d333c5b9d9a76095427ab
 2016-04-11 19:01:08 +00:00
drh
affa855c94 Performance optimization for the sqlite3ExprListDelete() routine. 
FossilOrigin-Name: 2764aeaa11f38cf2ff4d6191e6d5466ddb203022
 2016-04-11 18:25:05 +00:00
drh
bea119cdeb Performance optimizations in the column cache of the code generator, and 
especially the sqlite3ExprCacheRemove() routine.

FossilOrigin-Name: e35b345cf858018ae0c07f79725f8d58062168db
 2016-04-11 18:15:37 +00:00
drh
3c19469ca2 Simplification and performance improvements in sqlite3ExprDup() and its 
subroutines.  More work is possible in this area.

FossilOrigin-Name: 476cc2838824e0667e80ce527b9caa551dee4a77
 2016-04-11 16:43:43 +00:00
drh
4f0010b1bc Performance improvement in sqlite3ExprDelete(). 
FossilOrigin-Name: 60ad80e3af4bae9f5c74fedf09eec9689e2e3dbf
 2016-04-11 14:49:39 +00:00
drh
08de4f7933 Factor out the common operation of setting the Expr.x.pSelect field of an 
Expr object into a subroutine.

FossilOrigin-Name: 6a5cceee486c5e3625556e4c7076ff90e9d8fa43
 2016-04-11 01:06:47 +00:00
drh
bb9b5f2608 Fix a register allocation bug in the VDBE code generator for 
PRAGMA integrity_check;

FossilOrigin-Name: 88439a866b3b16ad7c308ebe59198662a05e7eeb
 2016-03-19 00:35:02 +00:00
drh
de845c2f5a A more compact implementation of the code generator for the 
IS and IS NOT operators.

FossilOrigin-Name: 8607e3ac7a9d44372a4a66da21bbb3d28ae2528a
 2016-03-17 19:07:52 +00:00
drh
69c355bd9a Slight simplification to the query optimizer logic associated with IN (SELECT). 
FossilOrigin-Name: 2c55c3c2950cafdc256ab540f60dc4609b9c354b
 2016-03-09 15:34:51 +00:00
drh
90730c9e68 When optimizing expressions of the form "x IN (SELECT ...)" make sure that 
the subquery is not correlated.  Fix for ticket [5e3c886796e5512].

FossilOrigin-Name: 1ed6b06ea3c432f920fb2b66b6042be906c5d21c
 2016-03-09 15:09:22 +00:00
drh
94fa9c414a Eliminate the need for the Column.zDflt (using Column.pDflt instead) to reduce 
the amount of memory needed to hold the schema.

FossilOrigin-Name: d8c94a46dfa94930732c2de2aa79675c5087d36e
 2016-02-27 21:16:04 +00:00
drh
80738d9c3e Improvements to the application-defined function mechanism so that it is 
more compact and runs faster, especially when the application defines
thousands of new SQL functions.

FossilOrigin-Name: 3201fbcc5105d23132e6b8b7ac825e66af4f8a39
 2016-02-15 00:34:16 +00:00
drh
575fad6500 Add the slightly faster sqlite3DbMallocRawNN(db,n) routine for the majority 
cases where db is guaranteed to be not NULL.

FossilOrigin-Name: 0a802e96ab06e2643834b83671fa8353da1a348d
 2016-02-05 13:38:36 +00:00
drh
4a642b6060 Improvements to the way that OOM errors are processed. 
FossilOrigin-Name: c3ef03478a5788c855b3aef385d43ae7f494f440
 2016-02-05 01:55:27 +00:00
drh
40aced5c65 Add the sqlite3TokenInit() utility function. 
FossilOrigin-Name: 7323175337b7ba85ac932ca892b28860f6a5b688
 2016-01-22 17:48:09 +00:00
drh
c263f7c4b3 Avoid unnecessary calls to memset() for a small performance improvement. 
FossilOrigin-Name: 9e8c23acf74944a165c733682a956948b15bd401
 2016-01-18 13:18:54 +00:00
drh
2d80151f32 Combine the xFunc and xStep pointers of the FuncDef object into a single 
pointer xSFunc.

FossilOrigin-Name: 0d1b3d7d3ca66cb0b97493f1aeade1703af3c9f4
 2016-01-14 22:19:58 +00:00
drh
ca3862dc6e Reduce the number of calls to memset() in sqlite3DbMallocZero(). 
FossilOrigin-Name: cede2bf8e42ac140a8cc75a1d173083f543ba467
 2016-01-08 12:46:39 +00:00
dan
3e6a141130 Fix some harmless gcc compiler warnings. Mostly in fts5, but also two in the core code. 
FossilOrigin-Name: 5d44d4a6cf5c6b983cbd846d9bc34251df8f4bc5
 2015-12-23 16:42:27 +00:00
drh
1c75c9d7f1 Ensure that the Expr objects that describe indexed expressions are not modified 
by code generation.  Fix for an assert() problem found by Jon Metzman using AFL.

FossilOrigin-Name: 34073ce87d88a02313217023ae92e15939192cd9
 2015-12-21 15:22:13 +00:00
drh
72ea29d7ae Changes to avoid undefined behavior in memset() and memcpy() and in the 
comparisons of pointers from different allocations.  All problems are found
by analysis tools - none have been seen in the wild.

FossilOrigin-Name: 901d0b8f3b72e96ffa8e9436993a12980f5ebd51
 2015-12-08 16:58:45 +00:00
drh
2edc5fd73a Remove an incorrect ALWAYS() macro. Fix for ticket [e5c6268dd807fa8950] - 
a problem introduced in SQLite 3.9.0 and found by libFuzzer.

FossilOrigin-Name: 824ad96f72cb0c948ec98aca9d17a7e6790c575f
 2015-11-24 02:10:52 +00:00
drh
62aaa6ca88 Fix over-length source code lines. No logic changes. 
FossilOrigin-Name: 198d191b2f5ef7d63ac0093c701955c9052fd734
 2015-11-21 17:27:42 +00:00
drh
1167d32716 Make the internal sqlite3PExpr() interface responsive to the 
TKFLG_DONTFOLD flag on the operator parameter.

FossilOrigin-Name: b10ab59fb8a696d11a269f3904e799c687246aea
 2015-10-28 20:01:45 +00:00
drh
0691191d26 Merge in all trunk changes prior to the BTREE_FORDELETE enhancement. 
FossilOrigin-Name: 53d5a4add6b60722ad77daf98b6b8983b081e16a
 2015-10-26 18:51:09 +00:00
drh
b0df963465 Fix a comment in expr.c and add a CORRUPT_DB to an assert() in btree.c. 
FossilOrigin-Name: 0df371d1a51c2028aefa4c704707773750317689
 2015-10-16 23:55:08 +00:00
drh
0030aaad67 Merge recent enhancements from trunk. Version now 3.9.1. 
FossilOrigin-Name: 26fa091d68e89a0b6af61ba706d23a9f37e8025a
 2015-10-16 20:53:57 +00:00
drh
ce78bc6e7e Enhance the use of the column cache for UPDATE statements, making them 
more efficient for the case where a column is modified to be an expression
of other unmodified columns.

FossilOrigin-Name: 871e091df651b2275a672c35ff938bd4b6db0d7f
 2015-10-15 19:21:51 +00:00
drh
99f4647ef5 Merge in all the 3.9.0 updates from trunk. 
FossilOrigin-Name: 29444149342fc6b1ea8cd34c2c8e1fcb06eaa7ed
 2015-10-14 20:09:54 +00:00
drh
728e0f91bb Compiler warning fixes: Rename some local variables from "j1" to avoid a 
name collision with the j1() bessel function in the math library.  Omit a
dummy initializer that gcc 4.6.3 does not like.

FossilOrigin-Name: 9ddef84d432813f3ece8012047d08441caa3315d
 2015-10-10 14:41:28 +00:00
drh
4b92f98ccc Use symbolic names XN_ROWID and XN_EXPR in place of the (-1) and (-2) 
magic numbers in Index.aiColumn[].  Add asserts to help verify that
Index.aiColumn[] is always used correctly.  Fix one place in FK processing
where Index.aiColumn[] was not being used correctly.

FossilOrigin-Name: 7d272aa62cd4cbbf4b5d04e3b918de27671e8301
 2015-09-29 17:20:14 +00:00
drh
81966bea22 Merge enhancements from trunk. 
FossilOrigin-Name: 66fe06832614010d3156d7b21a760af9957018cc
 2015-09-15 17:31:47 +00:00
drh
0b8d255c37 Omit all use of Expr nodes for TK_AS, as those nodes no longer served a useful 
purpose and in fact interferred with the query planner.

FossilOrigin-Name: 7ab0b258eabfcfb7f1b0bd1b12e166d2f267823d
 2015-09-05 22:36:07 +00:00
drh
163c29c5f3 Merge enhancements from trunk. 
FossilOrigin-Name: 25ee3000e94d60d8c1d7b980f416dcc33eb11105
 2015-09-03 14:39:33 +00:00
drh
34de0c8c5e Merge enhancements from trunk. 
FossilOrigin-Name: 1ab10cbf27245961b40eda1ce70f35646f0a9966
 2015-09-03 14:18:12 +00:00
drh
076e85f59c Add the sqlite3VdbeLoadString() and sqlite3VdbeMultiLoad() routines to help 
with code generation, especially on PRAGMAs.  Rename sqlite3VdbeAddGoto()
to just sqlite3VdbeGoto().

FossilOrigin-Name: 847387ec8e6fef283899578fb232b2c23b00ee5b
 2015-09-03 13:46:12 +00:00
drh
2991ba050b Add the sqlite3VdbeAddGoto(v,i) routine as a shorthand for 
sqlite3VdbeAddOp2(v,OP_Goto,0,i).

FossilOrigin-Name: be78f413df1b0d874b44a866ef6bf17543d7e8a2
 2015-09-02 18:19:00 +00:00
drh
4970d4032e Merge enhancements from trunk. 
FossilOrigin-Name: 29570a604806e2a60a8eef7eaf1dce022d2a7004
 2015-09-01 18:31:19 +00:00
drh
390b88a448 Case should not be significant when comparing function names. 
FossilOrigin-Name: e2f1caf117b0a9632d52246717ab202852982339
 2015-08-31 18:13:01 +00:00
drh
e14796085a Merge enhancements from trunk. 
FossilOrigin-Name: ec6ddb3d481d005c304a26c948c9c808586750e9
 2015-08-26 18:04:23 +00:00
drh
5579d59fb3 Evaluate expressions only once when the same expression is used in both the 
result set and in the ORDER BY clause.

FossilOrigin-Name: c2f3bbad778504681b39ab9399a1eb3c1a35ab3f
 2015-08-26 14:01:41 +00:00
drh
1f9ca2c84c Add code to maintain indexes with expression arguments across DELETE, INSERT, 
and UPDATE statements.  Legacy tests pass, but the new code paths are still
largely untested.  The query planner currently makes no effort to use
expression indexes.

FossilOrigin-Name: efaabdb71626bdc03768e87e186c72f6f3da75b2
 2015-08-25 16:57:52 +00:00
drh
108aa00a87 Enhances the parser so that it accepts arbitrary expressions for the arguments 
of an index, though the code generator still rejects everything other than
simple column names.  The sqlite3RestrictColumnListSyntax() routine is removed
since that feature is now handled by the parser.

FossilOrigin-Name: bed42116addabcf3dfdc2e2d51ae183965704988
 2015-08-24 20:21:20 +00:00
drh
bc622bc045 Disallow the use of COLLATE clauses and the ASC and DESC keywords within 
foreign key constraints and in the argument list to common table expressions.

FossilOrigin-Name: 83cbc4d8761498647794affffa961a4fca311be7
 2015-08-24 15:39:42 +00:00
drh
e792b5b420 Fix a comment typo on sqlite3ExprAlloc(). No code changes. 
FossilOrigin-Name: 518d6220a12fb1289f699ef0821e6adfcd286ed0
 2015-08-23 20:48:29 +00:00
drh
c1bd84124b Merge recent enhancements from trunk, including table-valued expressions. 
FossilOrigin-Name: b9927c876c1d4e146cb6a603d82cd2489594084d
 2015-08-20 23:45:59 +00:00
drh
8a48b9c0b1 Minor refactor of the SrcList object so that it is able to hold the argument 
list to a table-valued-function in the FROM clause.

FossilOrigin-Name: b919376147597c4b73421abe5788f893baf1560b
 2015-08-19 15:20:00 +00:00
drh
07194bff0e Fix a bug in sqlite3ExprContainsSubquery(). 
FossilOrigin-Name: be254715b5f56900e57ed57a179ca8d7bb68685d
 2015-08-13 20:34:41 +00:00
drh
bec2476afc Merge in all the trunk changes from the previous year. This breaks the 
cursor-hint mechanism, but provides a baseline for trouble-shooting.

FossilOrigin-Name: 82a7a61bc0883b1e7432548e4890791717aa1bb3
 2015-08-13 20:07:13 +00:00
drh
9c7c913cd6 Cache the sqlite3_context structure in the P4 operand of VDBE programs 
for faster SQL function dispatch.

FossilOrigin-Name: 2abc44eb3b9d489321baa50bc25e17dafbda3687
 2015-06-26 18:16:52 +00:00