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7,319 Commits 1,608 Branches 185 Tags
b057e56f226e89b41455f07fd1da974c3b6ebd16
Commit Graph

442 Commits

Author SHA1 Message Date
drh
b057e56f22 Remove unreachable code that was added by the fix to the "(xANDy)OR(z)" bug 
in the previous check-in.

FossilOrigin-Name: 04915562a0c2cb377bc7baa0c06c5d9ac376563c
 2009-12-16 23:43:55 +00:00
drh
c01a3c1775 Ensure WHERE clause terms involving tables on the right end of a join 
are not prematurely evaluated when tables on the left end of the join
make use of the OR-clause optimization.  
Fix for ticket [31338dca7e].

FossilOrigin-Name: 2c2de252666662f5459904fc33a9f2956cbff23c
 2009-12-16 22:10:49 +00:00
drh
a62bb8d4d7 Make sure registers computed for the VFilter opcode are marked invalid 
after the VFilter opcode finishes.  Ticket [16fbf14cb2].

FossilOrigin-Name: 83dc7d38c2695d1b2a7d4866a4df9be9e41d1abe
 2009-11-23 21:23:45 +00:00
drh
2f2855b638 Suppress more instances of unnecessary OP_IsNull and OP_Affinity opcodes. 
FossilOrigin-Name: bf6c0bd1c5568c6292ea0a64c8a5071e1bd3079a
 2009-11-18 01:25:26 +00:00
drh
039fc32e84 Code generator tries to avoid pointless OP_IsNull and OP_Affinity opcodes. 
FossilOrigin-Name: ebb0c8a3e977dc741704e733b5a5d931d9b27028
 2009-11-17 18:31:47 +00:00
drh
f6a82030a8 Fix a reference to freed memory that can occur following an OOM error in 
where.c.

FossilOrigin-Name: 929b6047391411c6f539e47afe6b63d16e352ccb
 2009-11-16 22:54:50 +00:00
drh
8cff69df11 Enhance the OP_Found and OP_NotFound opcodes so that they can accept an 
array of registers as an unpacked record in addition to a record built
using OP_MakeRecord.  Use this to avoid OP_MakeRecord calls during IN
expression processing.

FossilOrigin-Name: b9eab885cd2ca1a1633329e7036c125e8dba62c5
 2009-11-12 19:59:44 +00:00
drh
35451c6acd Suppress unnecessary OP_Noop instructions on when the right table of a 
LEFT JOIN uses the index-only optimization.

FossilOrigin-Name: e8aec08bee1c8d593474561898037aed571e64ce
 2009-11-12 04:26:39 +00:00
drh
c81c11f62c Remove the obsolete "$Id:$" RCS identifier strings from the source code. 
FossilOrigin-Name: f6c045f649036958078cb15cd9d5453680c82b0c
 2009-11-10 01:30:52 +00:00
drh
1d452e1de0 Fix compiler warnings. Better comments on some variables associated with 
LIKE/GLOB processing in the query planner.

FossilOrigin-Name: cfa2db0ff7a94e7f66c35f672ee41cadd45a6dd7
 2009-11-01 19:26:59 +00:00
drh
d91ca49a4e Add some sample requirement implementation comments to where.c. 
FossilOrigin-Name: 9854ad00aed08793ae7ba3c2cfbab7a2dba4dcb8
 2009-10-22 20:50:36 +00:00
drh
b4138de448 Remove an unreachable condition in the WHERE clause processing of bound 
parameters and replace it with an assert(), for test coverage.

FossilOrigin-Name: 3bcd78a1d76897d1bd5ad4cea52c6a65612ce433
 2009-10-19 22:41:06 +00:00
dan
1d2ce4f804 Remove the sqlite3_reoptimize() API. The same functionality is now provided automatically to queries prepared using prepare_v2(). 
FossilOrigin-Name: 2c50b3d5aab7cd8cc841d61f8c3b2b34d2f0b54b
 2009-10-19 18:11:09 +00:00
dan
f7b0b0ad5f When generating WHERE clause terms internally for NATURAL and USING joins, identify the table by its position in the FROM list, not by its name or alias. Fix for [b73fb0bd64]. 
FossilOrigin-Name: 6fe6371175482d38ac4aeea994c7b20c18b7de01
 2009-10-19 15:52:32 +00:00
drh
bec451f8ad Make sure the target register is allocated before adding the bogus 
OP_Variable opcode in isLikeOrGlob().  Bugfix for the new 
sqlite3_reoptimize() logic.

FossilOrigin-Name: e74f8dc436213b7ef754adcab5ef7554d774474c
 2009-10-17 13:13:02 +00:00
dan
937d0dea4f Add the experimental sqlite3_reoptimize() API. 
FossilOrigin-Name: 9bd6f3d8864d422fe42074688b191915b27ad8ea
 2009-10-15 18:35:38 +00:00
dan
e83c4f3a9e Fix compilation with both OMIT_UTF16 and ENABLE_STAT2 defined. Ticket [56928bd084ea530eb8a0b3ebe5d2d9033fb1de7f|56928bd084]. 
FossilOrigin-Name: cd850d49a12a2852258cbd7d5db56715132dff17
 2009-09-21 16:34:24 +00:00
drh
3f022189dd Suppress some harmless compiler warnings. 
FossilOrigin-Name: f0c72a53c5d57d7487b48a06a40816153f47aaac
 2009-09-09 16:10:50 +00:00
shane
cea72b2dc2 Warning cleanup from the MSVC compile. 
FossilOrigin-Name: 26cd015c0ee1c18dd37f11b47ce35cfa320b3514
 2009-09-07 04:38:36 +00:00
drh
a8f576126e Remove an unreachable branch from where.c in order to restore 100% 
branch test coverage.  Add assert() and testcase() macros to verify
that the branch is unreachable.

FossilOrigin-Name: 58db7e7166ccefef77b237b77e17f47d31ff41e0
 2009-08-25 16:28:14 +00:00
drh
011cfca18e Initialize variables differently in the range processing logic of where.c 
in order to make sure variables are always initialized even following
an OOM error.

FossilOrigin-Name: 3fb3686a4502140720dc3710a28a4f4128ab6554
 2009-08-25 15:56:51 +00:00
drh
d00151613a Change the expression code generator to account for the fact that the new 
sqlite3AtoF() never returns NaN.  Also, clarification of a comment in
where.c.

FossilOrigin-Name: 75f596a04a74eb3a538c7be5b41756c970a21a1b
 2009-08-21 13:22:25 +00:00
drh
daf4a9f3b8 Simplifications to the range-scan logic in support of structural testing. 
FossilOrigin-Name: bbbee81075d923be7ca11e6e635c069a05d1605a
 2009-08-20 20:05:55 +00:00
drh
98cdf62690 Continuing refinements of the range-scan optimizations in where.c. 
The range scores are changed from an integer 1..9 to 0..100.

FossilOrigin-Name: f0c24b5fb86940f1a88adfb39cc4b9cbfcc66f8a
 2009-08-20 18:14:42 +00:00
drh
cdaca55eb1 Incremental code and comment cleanup in where.c. There is more to be done. 
FossilOrigin-Name: 4a5d9550bdc08633535a7869d7748f56ac3e9a36
 2009-08-20 13:45:07 +00:00
drh
9aeda79cf6 All the sqlite3GetCollSeq() function to specify an arbitrary text encoding. 
FossilOrigin-Name: 4ee44322ca3c92ed8d6f5d4a3f89d219bf379595
 2009-08-20 02:34:15 +00:00
dan
69188d9a66 Add the SQLITE_ENABLE_STAT2 macro. If this is not defined at build-time, the stat2 table is not created, populated, or used. 
FossilOrigin-Name: 362665e89c21fd603d9f8ad6c0ead590e885af7c
 2009-08-19 08:18:32 +00:00
dan
e275dc3fb8 Change the sqlite_stat2 schema to be more flexible. 
FossilOrigin-Name: ded9dec6459baf21e01f63250db5ace57f390e7a
 2009-08-18 16:24:58 +00:00
dan
02fa469619 First version of sqlite_stat2 (schema forces exactly 10 samples). 
FossilOrigin-Name: dd96bda2a85c1d94fb4a0bf5f27e2977f7f7e42e
 2009-08-17 17:06:58 +00:00
dan
69f8bb9c72 If a binary operator in a WHERE clause that should be performed with no affinity conversions applied to its operands (see http://www.sqlite.org/datatype3.html) is optimized by index lookup, do not apply any conversions to the key value before looking it up in the index. Fix for 93fb9f89d6. 
FossilOrigin-Name: e72186f2d68d28c2e0c32894f9adb28c155b5f63
 2009-08-13 19:21:16 +00:00
dan
5236ac1d04 Changes to the query planner that improve the order in which tables/indexes are scanned in join queries. 
FossilOrigin-Name: 19f799b32f9d1be25d4185ce18b13f4dd502e199
 2009-08-13 07:09:33 +00:00
danielk1977
f51d1bd665 Fix a bug in where.c that could cause SQLite to write to freed memory while compiling a query with many terms in the WHERE clause. (CVS 6952) 
FossilOrigin-Name: 8161af840e8fd2b06457e75023f934e1b8fe5fd6
 2009-07-31 06:14:51 +00:00
shane
3190f4b5f1 Fixed reversed labels in WHERETRACE() statement. Debugging code only. (CVS 6948) 
FossilOrigin-Name: 614a8d83158eb59e3fbe78d62461635bfcc13525
 2009-07-28 08:43:09 +00:00
danielk1977
595a523a10 Allow virtual tables to be used in shared-cache mode. (CVS 6928) 
FossilOrigin-Name: 5d9e767a05e381235e064061043e30cc03a11a07
 2009-07-24 17:58:53 +00:00
shane
e26fa4c959 Fix a link error and warning that can occur in where.c when compiling under MSVC with SQLITE_OMIT_VIRTUALTABLE defined. Ticket #3914. (CVS 6767) 
FossilOrigin-Name: 793c93be16af535e102dba147125384f6814cf5f
 2009-06-16 14:15:22 +00:00
shane
8509570763 Fix compiler warnings with MSVC build. (CVS 6761) 
FossilOrigin-Name: e1e6430752449a34671b6c89326b03ac36ea6d9a
 2009-06-15 16:27:08 +00:00
drh
2c1a0c568f Add an ALWAYS() to a conditional in where.c. (CVS 6747) 
FossilOrigin-Name: 1fdb3e1e9af0672072f133dde06594fea2ef13c5
 2009-06-11 17:04:28 +00:00
drh
5901b571d4 Do not let the reverse_unordered_selects pragma force the use of an index that 
would not otherwise be used.  Ticket #3904.
Also: remove an test which is always true. (CVS 6745)

FossilOrigin-Name: 78a391dca05dbe3ad1d8124b80b31bc2ce75778f
 2009-06-10 19:33:28 +00:00
drh
254993e2e5 Additional comments to clarify the operation of the LIKE optimizer in 
where.c. (CVS 6731)

FossilOrigin-Name: cc9c12170c3f6f0f485977e47e7fbb75c50e82b1
 2009-06-08 19:44:36 +00:00
drh
4e8be3bb5d Clarification of the operation of the OR-term optimizer in where.c. (CVS 6730) 
FossilOrigin-Name: 6b42dc3d04e98f91c203c277926ed6ead62a9270
 2009-06-08 17:11:08 +00:00
drh
c4ac22e905 Disable the LIKE optimization if the affinity of the LHS column is 
not TEXT.  Ticket #3901. (CVS 6727)

FossilOrigin-Name: a255c645c46ae03b65f862858fe57e462076e1fc
 2009-06-07 23:45:10 +00:00
drh
125feffc89 Make sure the result of sqlite3VdbeGetOp() is not used as an array following 
an OOM error, since after (6691) it might be a single-entry dummy opcode. (CVS 6724)

FossilOrigin-Name: 127b13981960a9690de09e8f9d0b38a4bd76015f
 2009-06-06 15:17:27 +00:00
drh
50d654da3b Additional changes to reduce stack usage. The SQLITE_SMALL_STACK compile-time 
option is now available. (CVS 6708)

FossilOrigin-Name: baea79fd0cfeb860973846c3f2776776c87f0ae3
 2009-06-03 01:24:54 +00:00
drh
33e619fc1c Additional refinements to Expr handling. Restore compression of trigger 
expressions.  Change Expr.zToken to Expr.u.zToken and added Expr.u.iValue.
Remove an unnecessary ExprDup from CHECK constraint processing.  And so forth. (CVS 6682)

FossilOrigin-Name: 4ac2bdfbb4230b6ceaae87e738fa61036bbe03cb
 2009-05-28 01:00:55 +00:00
drh
b7916a78ff Simplifications to the Expr object: Remove Expr.span completely and convert 
Expr.token into a char* Expr.zToken.  Also simplify the Token object by
removing the Token.dyn and Token.quoted fields. (CVS 6681)

FossilOrigin-Name: 7cb1c3ba0759539cb035978fdaff6316775986f3
 2009-05-27 10:31:29 +00:00
danielk1977
e672c8ed91 Do not transform a WHERE clause of the form "a = ? OR a = ?" to "a IN (?, ?)" if "a" is a column of a virtual table. Ticket #3871. (CVS 6671) 
FossilOrigin-Name: fad88e71cf195e703f7b56b13f0c1818fd0dac84
 2009-05-22 15:43:26 +00:00
drh
b2f9efc3f0 Fix compiler warning found with gcc -Wextra. (CVS 6614) 
FossilOrigin-Name: 93bdbc5e2f9771a30358cde03f0d3cb708d73d48
 2009-05-06 19:03:13 +00:00
shane
60a4b53823 Changes to silence compiler warnings under MSVC. (CVS 6613) 
FossilOrigin-Name: df599237e1ca8b4f361477a712cf761aa1fac3df
 2009-05-06 18:57:09 +00:00
drh
6a863cdad8 Fix three variable initialization problems found by valgrind. (CVS 6612) 
FossilOrigin-Name: 37428435978027f6baffa552306dd5dc29ce5cd5
 2009-05-06 18:42:21 +00:00
drh
3500ed6650 Make sure the left-shift operator never overflows. (CVS 6605) 
FossilOrigin-Name: 300da30178c46ab9f2ceb0c3e3ee3eac73d5d8e1
 2009-05-05 15:46:43 +00:00