database/sqlite
1
0
Fork 0
mirror of https://github.com/sqlite/sqlite.git synced 2025-11-12 13:01:09 +03:00
Code Activity
19,525 Commits 1,607 Branches 185 Tags
c23f3cb15b7b556578529162e90b41e87cb4ce68
Commit Graph

965 Commits

Author SHA1 Message Date
dan
625015e0c9 Remove the EP_Vector expression flag. 
FossilOrigin-Name: e9d9c6d46b46160fad6aa6e3441a65a09157515f
 2016-07-30 16:39:28 +00:00
dan
19ff12dd76 Fix some issues with vector range constraints and the column cache. Also vector range constraints and rowid columns. 
FossilOrigin-Name: 42607366bfc2dceb1013797a973b3b8df75dcb4d
 2016-07-29 20:58:19 +00:00
dan
145b4ea519 Change the way "(a, b) = (SELECT *)" expressions are handled in where.c if there is an index on one of the columns only. 
FossilOrigin-Name: 4dfebff2924f46284d5b9cda69175f79b29d6028
 2016-07-29 18:12:12 +00:00
dan
7b35a77b1a Fix further issues with multi-column IN(...) operators. Also some error handling cases surrounding row values. 
FossilOrigin-Name: cc3f6542bec99b00d2698889bcea2aa0b587efa0
 2016-07-28 19:47:15 +00:00
dan
34c125747d Merge latest trunk changes into this branch. 
FossilOrigin-Name: 9685880f7baeb670739fdcf2d9df08e22abaa699
 2016-07-28 13:59:21 +00:00
dan
d49fd4e89a Fix some problems with multi-column IN(SELECT...) processing. 
FossilOrigin-Name: 719a3b2035a335ca8b9704646b1d641011e3ea0e
 2016-07-27 19:33:04 +00:00
drh
e604ec0be0 Add test cases and fix a comment. 
FossilOrigin-Name: 50f8ea37fb9647c4a9da2c269a4d6f54b10ce96b
 2016-07-27 19:20:58 +00:00
drh
2409f8a112 When estimating the cost of an index scan, factor in the cost savings of 
being able to use the index to evaluate some WHERE clause terms without
having to do a table lookup.

FossilOrigin-Name: a59b5622f7cc6e502d71aabc12c053582cd03609
 2016-07-27 18:27:02 +00:00
dan
8da209b169 Fix where.c handling of "IN (SELECT ...)" expressions when the SELECT returns more than one result column. Also error handling for other row value constructor cases. 
FossilOrigin-Name: 061b8006034f06a0311b4304c8b14d2c8b0153df
 2016-07-26 18:06:08 +00:00
dan
ba00e30a3a Allow vector IN(SELECT ...) expressions to use an index if either all the indexed columns are declared NOT NULL or if there is no difference between the expression evaluating to 0 and NULL (as in a WHERE clause). 
FossilOrigin-Name: e2fd6f49b1b145bec09c581cc982b89429643ae9
 2016-07-23 20:24:06 +00:00
dan
cfbb5e82db Modifications towards better vector IN(...) support on this branch. Not activated yet. 
FossilOrigin-Name: 34e35c71b25b0aa2d8931040feb260a78cc48c49
 2016-07-13 19:48:13 +00:00
mistachkin
e234cfd11f Fix typos in comments. No changes to code. 
FossilOrigin-Name: 77c692a6704cd877ba35d0afb774ab9b46364d59
 2016-07-10 19:35:10 +00:00
dan
71c57db099 Add some support for using row value constructors in certain parts of SQL expressions. There are many bugs on this branch. 
FossilOrigin-Name: b2204215b231202aef7a218411cc2ddaecf28f35
 2016-07-09 20:23:55 +00:00
dan
3480bfdae9 Add a missing OP_ColumnsUsed opcode to code for expressions like "? IN (SELECT ...)" in cases where expression can use an index that may contain NULL values. 
FossilOrigin-Name: 0b1579caf06a2c42433b8bc9dc28c9ad381aa07c
 2016-06-16 17:14:02 +00:00
drh
35db31b24b Add the CSV extension to the test fixture. Fix a memory leak in the CSV 
extension.  Add test cases for the CSV extension, including one that uses
a WITHOUT ROWID virtual table participating in the OR optimization.

FossilOrigin-Name: 95f483e86e30ae68108904400e18ed41d389446b
 2016-06-02 23:13:21 +00:00
drh
eeb9565a3e Add a new OP_SeekRowid opcode, that combines the functions of OP_MustBeInt 
and OP_NotExists.  This makes the code slightly smaller and faster.

FossilOrigin-Name: ffe80a1bfa014943a614fc6993c1749b9bfec4c1
 2016-05-26 20:56:38 +00:00
dan
ee65eea4af Fix a couple of assert() statements that were failing with OOM error tests. 
FossilOrigin-Name: 8eb3d7d8360530f364bbbebac53e1f0e6753d924
 2016-04-16 15:03:20 +00:00
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