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seekeq-experiment
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1533 Commits

Author SHA1 Message Date
drh
b1d607de25 Improvements and simplifications to the equality seek logic. Tests are 
adjusted so that they all pass now.

FossilOrigin-Name: 997ce6c90b454c03cc2ef6934752ee8dd2e520e3
 2015-11-05 22:30:54 +00:00
drh
70528d7868 The top of an index equality loop normally starts with OP_SeekGE and OP_IdxGT. 
This check-in adds a flag to OP_SeekGE such that it fails immediately if
the key is not equal, then jumps over the OP_IdxGT, saving a call to the key
comparison functions.  Consider this check-in a proof-of-concept.  It needs 
improvement before going on trunk.  Some tests fail, but only because they
new use fewer key comparisons than expected (which is a good thing!).

FossilOrigin-Name: 32e31b9bc8664afcd326a1ff3892d86dc5202474
 2015-11-05 20:25:09 +00:00
dan
c5dc3dcd6e Merge the BTREE_FORDELETE enhancement with this branch. 
FossilOrigin-Name: 20da0849ce910ceb445954dfc5f985acf9a02695
 2015-10-26 20:11:24 +00:00
dan
fd261ec67e Modifications to pass a flag to internal routine sqlite3BtreeCursor() when a cursor that is used solely for deleting b-tree entries, or for obtaining the components of keys to delete from other b-trees, is opened. 
FossilOrigin-Name: cdc92919e600007cae5eb61223684f48a65babc0
 2015-10-22 20:54:33 +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
b02392e6f0 Change sqlite3StatusSet() into sqlite3StatusHighwater() so that only the 
highwater mark is recorded.  This gives a small size reduction and
performance improvement.

FossilOrigin-Name: 6422d223dd10018703c6b083d29a3c35c837fc97
 2015-10-15 15:28:56 +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
mistachkin
8d9837acd5 Adjustments to sqlite3MemoryBarrier() when compiling with MSVC and/or WinCE. 
FossilOrigin-Name: 3168326ebfa1c961d8fc6435453b02be23d910cc
 2015-10-06 01:44:53 +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
c149f18f4d Create the sqlite3IsToplevel(Parse*) interface to check to see if a top-level 
VDBE is being coded (versus a trigger) and use that interface.

FossilOrigin-Name: 59662cd2b65255a30e1a420331c07c51b644621a
 2015-09-29 13:25:15 +00:00
drh
81966bea22 Merge enhancements from trunk. 
FossilOrigin-Name: 66fe06832614010d3156d7b21a760af9957018cc
 2015-09-15 17:31:47 +00:00
drh
b0264eeca1 Use symbolic names ONEPASS_OFF, ONEPASS_SINGLE, and ONEPASS_MULTI for the 
various modes of the one-pass optimization.

FossilOrigin-Name: 16e56bdadef903c6439a487f2683388aeeb0c625
 2015-09-14 14:45:50 +00:00
dan
f0ee1d3c12 Experimental change to use a single-pass approach for DELETE statements on non-virtual tables that do not fire triggers or require foriegn-key processing. 
FossilOrigin-Name: eaeb2b80f6f8f83679c8323a81bb39570ec946fe
 2015-09-12 19:26:11 +00:00
mistachkin
04abf0878f Import common changes from the mutex initialization branch. 
FossilOrigin-Name: 334720c01722478af0d3dfd6fe8bafd88ba09f49
 2015-09-12 18:57:45 +00:00
drh
0e8729dbe4 Attempt to declare sqlite3MemoryBarrier() correctly for all possible 
build configurations.

FossilOrigin-Name: da8a288f8ef4be34281519b4b4db9b857b9d168b
 2015-09-10 04:17:06 +00:00
drh
6081c1dbdf Add a memory barrier to the mutex initialization logic, try to work around 
an issue reported by WebKit.

FossilOrigin-Name: 11a9a786ec06403addb47f5c6fb142b382fae522
 2015-09-06 02:51:04 +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
4970d4032e Merge enhancements from trunk. 
FossilOrigin-Name: 29570a604806e2a60a8eef7eaf1dce022d2a7004
 2015-09-01 18:31:19 +00:00
drh
a7f910b549 Rename SQLITE_FUNC_VARYING to SQLITE_FUNC_SLOCHNG - a more descriptive name 
for what that bit means.

FossilOrigin-Name: ff5137a6dd8cb2a9b629b3a244f52665e9c9ebce
 2015-09-01 13:17:17 +00:00
drh
03bf26d90d Not only date/time functions, but also functions like sqlite_version() and 
changes() need to be prohibited from use inside of indexes.

FossilOrigin-Name: 487131303980f15dd5e1b6695b4f29efda229eb8
 2015-08-31 21:16:36 +00:00
drh
1d85e405e6 Make the distinction between truly deterministic functions and date/time 
functions which only return the same answer for a single query.  Only truly
deterministic functions are allowed in indexes.  Add new expression index
test cases.

FossilOrigin-Name: c77554b5c42327106a7b90334e9cc3c07b007c76
 2015-08-31 17:34:41 +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
0576bc59a7 Refactor With.a.zErr into With.a.zCteErr. No logic changes. 
FossilOrigin-Name: 58ba73630ecc4bc58b03a7962dd45b305ef605ef
 2015-08-26 11:40:11 +00:00
drh
567cc1e407 Move sqlite3IndexColumnAffinity() inside of SQLITE_ENABLE_STAT3_OR_STAT4. 
FossilOrigin-Name: b3732a4e1b42a86675d89766cb8089914e2fab9a
 2015-08-25 19:42:28 +00:00
drh
760b32dff2 Merge trunk enhancements. 
FossilOrigin-Name: e8b02902c48f3668dcff7b1767347ac7ef3c971e
 2015-08-25 19:24:11 +00:00
drh
e910769817 Use the sqlite3IndexColumnAffinity() routine to quickly and correctly find the 
affinity of an index column.

FossilOrigin-Name: 1ee089a72d789002a0a377347fc51e08ab32fb14
 2015-08-25 19:20:04 +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
a514b8eb0c Changes toward being abld to process indexes on expressions. Not there yet - 
this check-in is just movement in that direction.  Some tests are failing.

FossilOrigin-Name: 0ad0f8d77d8f95ca2ffb7745d18219f5e87dc89c
 2015-08-25 00:27:06 +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
8981b904b5 Enhance the CREATE VIEW syntax so that the names of columns of the view can 
be specified after the view name.

FossilOrigin-Name: d794b34da6f9c77dfe17773b0b17b22de72cce7f
 2015-08-24 17:42:49 +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
c1bd84124b Merge recent enhancements from trunk, including table-valued expressions. 
FossilOrigin-Name: b9927c876c1d4e146cb6a603d82cd2489594084d
 2015-08-20 23:45:59 +00:00
drh
01d230ce05 A list of arguments following a table name translates into equality 
constraints against hidden columns in that table.

FossilOrigin-Name: 40e12cfe4c29475417ba89fb637b4c763cf74016
 2015-08-19 17:11:37 +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
51be3873c0 Initial implementation of eponymous virtual table instances. 
FossilOrigin-Name: c1f43a7799a9298abea01b2f8531fc7cdadc4594
 2015-08-19 02:32:25 +00:00
drh
2f2b02785a Fix the cursor hint mechanism so that it does the right thing for indexed 
lookups.

FossilOrigin-Name: 581e3d4988e98975fea5daaeb9f854c54a4976b7
 2015-08-14 18:50:04 +00:00
drh
ffc648cfa9 Fix a harmless compiler warning. 
FossilOrigin-Name: 608ab4ac1911d5f32a17ea043bd5f0748598691d
 2015-08-13 21:38:09 +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
mistachkin
60e0807801 Add SQLITE_DISABLE_INTRINSIC define to disable use of intrinsic functions (e.g. for certain older compilers and/or platforms). 
FossilOrigin-Name: f0075d735a76ce326619b6ba7f0d556e492f1c41
 2015-07-29 21:47:39 +00:00
mistachkin
9895f73526 For Windows CE, a different header is required for the byteswap intrinsics. 
FossilOrigin-Name: 2d572b8cdc67679cc95e69677a87e7b4a82f6c2d
 2015-07-24 20:43:18 +00:00
drh
3e9dd938dd Enable memory-mapped I/O on FreeBSD and DragonFly. 
FossilOrigin-Name: 2cdd647951ff5dca53576bb8be6dd6310a557571
 2015-07-15 23:15:59 +00:00
mistachkin
65a88fcb42 Skip trying to include 'intrin.h' when compiling for WinCE with MSVC. 
FossilOrigin-Name: 6db90ca2b4ac806b42532072ebe6b2a4a7b9713d
 2015-07-14 21:56:17 +00:00
drh
4297c7c4be Add a compile-time constant for configuring the default pagecache setup. 
FossilOrigin-Name: ad5fdfbac85682f0f0dee62e1086f40026a58be2
 2015-07-07 21:14:42 +00:00
mistachkin
647ca46fc5 Make use of the _byteswap_ushort() and _byteswap_ulong() compiler intrinsics for MSVC, when available. 
FossilOrigin-Name: fe144dd73f7097a17c24c7812c2a1cc40466e6da
 2015-06-30 17:28:40 +00:00
drh
ad265296ff Only use <nowiki>__builtin_bswap16()</nowiki> with GCC 4.8 and later. 
FossilOrigin-Name: ce8177e3e64d2ac4cd5d9e7757cdd5fcecd7d0ea
 2015-06-30 14:01:20 +00:00
drh
82ef8775c7 Simplifications and performance improvement in pager_write(). 
FossilOrigin-Name: ab7aeeead395a05b91a921ef9ebe9252fffad667
 2015-06-29 14:11:50 +00:00
dan
923cadb1ae Test that the left and right sides of a compound SELECT operator have the same number of expressions in the expanded expression list before beginning to generate code. 
FossilOrigin-Name: 4df852ce26c95d5d23c83dbe9c59d2c3435acddf
 2015-06-23 12:19:55 +00:00
drh
f5ed7ad63e Fix harmless compiler warnings. 
FossilOrigin-Name: b0badb99023e23bef0e2064cec58f2b279af0c0b
 2015-06-15 14:43:25 +00:00