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16,862 Commits 1,607 Branches 185 Tags
66adb0a848fc66db518bd3df01abc03ccc71da99
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830 Commits

Author SHA1 Message Date
drh
e08ecad58a Do not mark the ephemeral tables used to hold the RHS of IN clauses as 
unordered because the NGQP will use those ephemeral tables to help order the
output.  This is not an issue for standard SQLite since ephemeral tables
there are always ordered, regardless of the hint.  It only affects systems
that substitute an alternative storage engine.

FossilOrigin-Name: f2504089df0bf4011864e67825b37f6aa3d03458
 2014-02-04 23:45:45 +00:00
drh
ec2da85412 Make sure that sqlite3SelectDup() initializes the nSelectRow of the 
duplicate Select object.

FossilOrigin-Name: 5bb29b82109224a2ad02920658fabd8fb0f27b3f
 2014-01-29 01:46:12 +00:00
drh
693e671936 Fixes for various clang warnings. 
FossilOrigin-Name: 87bf60637e5863c54c5e2d05aaaca0835b7aace8
 2014-01-24 22:58:00 +00:00
drh
edf83d1e3d Fix harmless compiler warnings. 
FossilOrigin-Name: dea2ca6a159d5dcfd8deceedf1c2a73fb4ac1cfc
 2014-01-22 18:31:27 +00:00
drh
75303a2c68 Add asserts() for a couple of unreachable conditions. Add the Mandelbrot Set 
query as a test case.

FossilOrigin-Name: 2ad4583c0cc7988f0dfe78fd0a2eb0fdb92d835a
 2014-01-18 15:22:53 +00:00
dan
eae73fbfb9 Allow only a single recursive reference in a recursive CTE. Also require that this reference is not part of a sub-query. 
FossilOrigin-Name: a296b73360d34c9364eceb2cc09a9a92adc4abb8
 2014-01-16 18:34:33 +00:00
dan
8290c2ad5a Disable the flattening optimization if the parent query is the recursive part of a recursive CTE and the sub-query is a compound query. 
FossilOrigin-Name: 6bfa387e82de47ca1f40225fe28d873e29d6f481
 2014-01-16 10:58:39 +00:00
dan
eede6a538d Fixes so that SQLITE_OMIT_CTE builds work. 
FossilOrigin-Name: 3908e2ea2e7e5f466cbbbffdc27e0fe8dc9751ac
 2014-01-15 19:42:23 +00:00
dan
f43fe6e9f6 When resolving names, consider a reference to a recursive CTE column as equivalent to a reference to the outermost name-context. This ensures that correlated sub-queries are correctly identified as such. 
FossilOrigin-Name: 61be2da0ae623c1572819481508b044e9d32f294
 2014-01-15 18:12:00 +00:00
drh
a379b32f33 Don't try to verify the schema of transient table (such as generated inside 
a WITH clause) when generating code for "IN table" operators.

FossilOrigin-Name: 860aa936634a60d68e3954fc408a96a9260394e0
 2014-01-15 14:40:41 +00:00
dan
bfe31e7f80 Disable the flattening optimization if the sub-query is a recursive CTE. 
FossilOrigin-Name: 9472f6d820a7fb233936d9b8f7a39c9d4c4d6d73
 2014-01-15 14:17:31 +00:00
dan
8ce7184bc2 Add code to handle recursive CTEs. 
FossilOrigin-Name: a5c2a54a07d35166911abc792008c05dea897742
 2014-01-14 20:14:09 +00:00
dan
4e9119d9e8 Add code to handle non-recursive CTEs in the same way as SQL views. 
FossilOrigin-Name: a26f399ba485e8127c276c5f103ec6c555e11734
 2014-01-13 15:12:23 +00:00
drh
b66e21fda5 Fix an typo that breaks the build when SQLITE_ENABLE_TREE_EXPLAIN is defined. 
FossilOrigin-Name: f461e2b3973d0fe6a7b8cb7a3aaab8a30b3e16c0
 2014-01-04 20:00:14 +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
drh
991a198511 Be more aggressive in optimizing constant conditional expressions. 
FossilOrigin-Name: b7e39851a75b87ebca747b26a39989560fd6362b
 2014-01-02 17:57:16 +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
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
5b88bc4bec Do not allow cursor hints to use expressions containing subqueries. This 
change fixes the problem seen in the previous check-in.

FossilOrigin-Name: bfefc57554853e467ee6aeaba8d08331406fa216
 2013-12-07 23:35:21 +00:00
drh
d673cddad6 Do not reuse factored constants that might have had their encodings changed. 
FossilOrigin-Name: 487f20366ce77f0c90865d10d5aaedd95af98694
 2013-11-21 21:23:31 +00:00
drh
d9f158e7b2 Fix the code generator to honor turning off constant expression factoring. 
FossilOrigin-Name: 882622662dfadf49c65c7d80b7fd87533d079ce9
 2013-11-21 20:48:42 +00:00
drh
d1a01edac9 When one or more arguments to a function are constants, try to factor 
out just those arguments into initialization code.

FossilOrigin-Name: 50d350abbc9176cd6fc606bc45b8fc3020719500
 2013-11-21 16:08:52 +00:00
drh
10f468f37a Remove the obsolete TK_CONST_FUNC token type. 
FossilOrigin-Name: 9b4217f055e9bced186b4c56a5753bd6da7115b5
 2013-11-21 14:44:38 +00:00
drh
b1fba2868b Add the ability to factor constant functions out of inner loops. But do 
not factor out non-constant functions, like random().

FossilOrigin-Name: 1b0f779e19a5c0d51eddd2d88db50034d77d132c
 2013-11-21 14:33:48 +00:00
drh
79353dbd5f Simplifications to the VdbeCursor object. 
FossilOrigin-Name: 5562cd343d8f69242e06a51a7f1aef7ee7d78eec
 2013-11-20 02:53:58 +00:00
drh
85f8aa7907 Add ALWAYS and NEVER macros to currently unreachable but important branches in 
sqlite3ExprCompare().

FossilOrigin-Name: cee835fe902e46f283257fb8ec9d9744c7d6dd77
 2013-11-15 20:06:26 +00:00
drh
c2acc4e466 Changes to make the new constant expression factoring logic more general 
and more testable.

FossilOrigin-Name: d10fb49a92f5f6e93093ae83544e5aec7984361a
 2013-11-15 18:15:19 +00:00
drh
10d1edf0b6 Improvements to the Expr comparison routine to make it more general. 
Improvements to unary-minus code generation so that it can make use of
a global constant register with a zero value.

FossilOrigin-Name: 835be656bb0e83c8108104869166aa9dd850d265
 2013-11-15 15:52:39 +00:00
drh
f30a969b80 Rework the logic that factors constant expressions out of inner loops, making 
it both simpler and faster.

FossilOrigin-Name: 8dc5c76c766828d7c28090bec30ff48227e7b140
 2013-11-15 01:10:18 +00:00
drh
2ec2fb2269 Reference count the KeyInfo object. Cache a copy of an appropriate KeyInfo 
for each index in the Index object, and reuse that one copy as much as possible.

FossilOrigin-Name: defd5205a7cc3543cdd18f906f568e943b8b3a2c
 2013-11-06 19:59:23 +00:00
drh
f9c8ce3ced Standardize the error messages generated by constraint failures to a format 
of "$TYPE constraint failed: $DETAIL".  This involves many changes to the
expected output of test cases.

FossilOrigin-Name: 54b221929744b1bcdbcc2030fef2e510618afd41
 2013-11-05 13:33:55 +00:00
drh
313619f572 Fix the Synopsis on OP_Concat. Added test_addop_breakpoint() during 
SQLITE_DEBUG.  Enhanced sqlite3VdbeChangeToNoop() to omit the instruction
if it is the most recent added.  Continue to fix problems with UPDATE
and WITHOUT ROWID.

FossilOrigin-Name: 9b6d9e106aaa3c2efb33d234d26cf08cd3c967b9
 2013-10-31 20:34:06 +00:00
drh
ee0ec8e1db Fix issues with quering from an auxiliary index that must refer back to the 
PRIMARY KEY index of a WITHOUT ROWID table.

FossilOrigin-Name: cff1f55c52ff57557d9b728a5cd830a367091794
 2013-10-31 17:38:01 +00:00
drh
ad124329ab Some inserts and queries working for multi-column primary keys 
and WITHOUT ROWID.

FossilOrigin-Name: b21d831b2aa55507dd9def2acb02cdbffddf10d1
 2013-10-23 13:30:58 +00:00
drh
bbbdc83b52 The Index object now has nKeyCol and nColumn. nColumn is the total number 
of columns and nKeyCol is the number of key columns.  Currently these always
differ by one.  Refactor aiColumn[] to be of type i16 instead of int.

FossilOrigin-Name: a106ce86cd4afd1f81603826de77df1fb25e9ab5
 2013-10-22 18:01:40 +00:00
drh
fdaac671b8 Improved estimates of the relative speed of index scans based on declared 
datatypes of columns in the table.  Add "r" column to PRAGMA index_info,
showing the estimated relative scan rate.

FossilOrigin-Name: 07462bb6059f023c22a6c84a4a02afbd84e69255
 2013-10-04 15:30:21 +00:00
drh
aecd80215c Remove one unreachable branch and add asserts() to dupedExprStructSize(). 
New asserts verify that removed branch is unused and that constants that are
ORed together in the output do not overlap.

FossilOrigin-Name: 86ad358b5a7567857f2f998fbb8266b7de9ec87e
 2013-09-13 18:15:15 +00:00
drh
ebb6a65d16 Refactor the ExprSetIrreducible() macro into ExprSetVVAProperty(*,EP_NoReduce). 
This is a naming change only.  The logic is the same.

FossilOrigin-Name: 695aee46e9bdf15159ab52db7f522b30c91aed0f
 2013-09-12 23:42:22 +00:00
drh
a4c3c87e3d Merge in the Expr.flags expansion to 32-bits. Use an extra bit to help 
optimize the sqlite3ExprSkipCollate() routine.

FossilOrigin-Name: 4c84d1b4c20f18921dd705bf67e8225975b83e86
 2013-09-12 17:29:25 +00:00
drh
c5cd124900 Increase the number of bits available in Expr.flags. Other tweaks aimed at 
making expression processing more robust.

FossilOrigin-Name: 579a512538528cf4bb4381ba393c5d9e7310086b
 2013-09-12 16:50:49 +00:00
drh
cca9f3d291 Initial implementation of the unlikely() SQL function used as a hint to 
the query planner.

FossilOrigin-Name: 036fc37a034093a4c6fc190633bd41c2b7230d77
 2013-09-06 15:23:29 +00:00
drh
d36e104112 Combine the FuncDef.iPrefEnc and FuncDef.flags fields into a single 
new FuncDef.funcFlags field.

FossilOrigin-Name: 97b10e66e98e84755aa577f8da017bf1aea2056c
 2013-09-06 13:10:12 +00:00
mistachkin
f64188910d Fix several harmless compiler warnings. Fix a couple compiler issues with the shell. 
FossilOrigin-Name: 8917e9f9a0802cbfb6f33e2ab1c2f98e4df5babd
 2013-08-28 01:54:12 +00:00
dan
36e78309de Candidate fix for [d666d600a6]. 
FossilOrigin-Name: 781592f32c8e1dcd59954c17211cf61349d1c0b1
 2013-08-21 12:04:32 +00:00
dan
290703091e Add some extra assert() statements to silence a few clang warnings. 
FossilOrigin-Name: 1c63e9515b5f5cb9169928b108d002dcd18ad4fd
 2013-08-19 18:17:03 +00:00
drh
812ea83343 Add a testcase() macro to verify OOM coverage. 
FossilOrigin-Name: d43dcbc488120aeb7104ab9e6a27f62bb348bf6a
 2013-08-06 17:24:23 +00:00
drh
3535ec3e10 Remove unreachable branches in expr.c, replacing them with assert() and 
testcase() statements.

FossilOrigin-Name: 9103c27ceb3f4023ea3a41b679a10717d3f80210
 2013-08-06 16:56:44 +00:00
drh
323df7907e Factor all KeyInfo object allocations into a single function: 
sqlite3KeyInfoAlloc().  Always allocate enough space so that 
sqlite3VdbeRecordCompare() can avoid checking boundaries and hence
run faster.

FossilOrigin-Name: 7301bedd94c8610568349953b18ff3575203e1b2
 2013-08-05 19:11:29 +00:00
drh
e0c7efd9ae Add NEVER() and ALWAYS() macros on some unreachable yet prudent branches. 
FossilOrigin-Name: c5c0a8ab6c222185d5f9d4321e64d9f93cd36b7d
 2013-08-02 20:11:19 +00:00
drh
66518ca71f More test cases and corresponding bug fixes. 
FossilOrigin-Name: 0c8cfdfae215c95cf167f404a1d346690b28e972
 2013-08-01 15:09:57 +00:00