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20,353 Commits 1,608 Branches 185 Tags
ccf6e7d0f0cbcd829b13c482aa43c27a59ea335c
Commit Graph

1096 Commits

Author SHA1 Message Date
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
drh
7b19f25247 Merge trunk changes. Fix a possible NULL-pointer deference in WITH clause 
name resolution.

FossilOrigin-Name: 7f953b568baa3eede0b9c144be0b9bc86496341a
 2014-01-16 04:37:13 +00:00
drh
93c36bb399 Remove an ALWAYS() that is no longer always true. 
FossilOrigin-Name: c95823cd451f7721174393817a801403647467db
 2014-01-15 20:10:15 +00:00
dan
eede6a538d Fixes so that SQLITE_OMIT_CTE builds work. 
FossilOrigin-Name: 3908e2ea2e7e5f466cbbbffdc27e0fe8dc9751ac
 2014-01-15 19:42:23 +00:00
drh
c49832c208 Further comments on WITH-clause processing routines in select.c. 
FossilOrigin-Name: c948384dfdd9f68a832d5a452af44f35337f66e7
 2014-01-15 18:35:52 +00:00
drh
60c1a2f0b5 Add a header comment to the searchWith() routine. 
FossilOrigin-Name: d9ae0f5d9f8230ca7ca10ebed300e2f6635a0614
 2014-01-15 18:23:00 +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
dan
60e7068d75 Return an error if a CTE specifies a different number of columns than its SELECT statement returns. 
FossilOrigin-Name: 9a514b50e4b01f109fbdb0aabcbfe1ddab129b44
 2014-01-15 15:27:51 +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
drh
f9db522fee Use the user-supplied table name in WITH RECURSIVE tables as the internal 
name of the table and the name of the table in VDBE comments.

FossilOrigin-Name: a29330238be6366444269a0b1b328475b2d01ae2
 2014-01-15 02:40:11 +00:00
dan
8ce7184bc2 Add code to handle recursive CTEs. 
FossilOrigin-Name: a5c2a54a07d35166911abc792008c05dea897742
 2014-01-14 20:14:09 +00:00
drh
859bc542c6 For statements of just an unadorned VALUES clause, assign column names 
as "columnN" for increasing whole numbers N.

FossilOrigin-Name: 260587d2727f66d7fd65ef672ee46c92024f1d30
 2014-01-13 20:32:18 +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
7e61d18eb4 Simplify the accumulator reset for aggregate query processing so that it 
uses a single multi-register OP_Null rather than a separate OP_Null for each
register.

FossilOrigin-Name: 2c7fd9b043f5f3d9d8e22dbefa84a9770ca951d0
 2013-12-20 13:11:45 +00:00
drh
a021f121c9 Remove an unneeded column-cache flush in aggregate SELECT 
and an unreachable branch in the INSERT logic.

FossilOrigin-Name: ffa092e13b3781677b18418cca40e3dd1e388aed
 2013-12-19 14:34:34 +00:00
drh
039468ef2d Remove an unnecessary column-cache flush. Add another test case to the 
speedtest1.c program to accentuate the benefit of not flushing the cache at
that point.

FossilOrigin-Name: 97fdfc6b79833011fc0c506fe5e0985c0fb1906c
 2013-12-18 16:27:48 +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
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
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
5c7917e4b4 A better (simpler) fix to the count(*) problem addressed in the previous 
check-in.

FossilOrigin-Name: 0f924c6ef6cf2ac5a61aafa8dd8e3309b3970499
 2013-11-12 15:33:40 +00:00
drh
abcc1941db Make sure the count(*) optimization works correctly on WITHOUT ROWID tables. 
FossilOrigin-Name: 91174779786be07d63f3c4a5277602ddc5f0ba26
 2013-11-12 14:55:40 +00:00
mistachkin
c6efe12d0d Fix memory type mismatch when compiled with MEMDEBUG. 
FossilOrigin-Name: 2c32bd6d4d5da2055633e8fb43ee184f729d8b91
 2013-11-09 23:44:02 +00:00
drh
41e13e1268 Make sure cached KeyInfo objects are only valid for a single database 
connection.  Clear all cached KeyInfo objects on any collating sequence 
change.

FossilOrigin-Name: 55eea1782aead6a6aaf93f14d85486f8fd2209ad
 2013-11-07 14:09:39 +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
261c02d963 Basic DELETE operations now working on WITHOUT ROWID tables. 
FossilOrigin-Name: 9eafafa31c4a2bbcf48418743e0fcb17c374e9a6
 2013-10-25 14:46:15 +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
5f3e5e747d Use #ifdefs to omit unused code in the columnType() routine depending on 
compile-time options.

FossilOrigin-Name: 3fd5e33217a91402b3499fa0977469b91618a928
 2013-10-08 20:01:35 +00:00
drh
186ad8cc32 Further refinement of the idea of multiplying run-time cost estimates by 
the estimated row size.

FossilOrigin-Name: 18bd6ba96d19de6047baebfa15b1f739577c9ec4
 2013-10-08 18:40:37 +00:00
drh
e13e9f54b0 Completely remove the iScanRatio field. The PRAGMA index_list(TABLE) command 
shows the estimated row size in the forth column.  It also generates a row
for the table with an index name of NULL.  The query planner still does not
take row size estimates into account - that is the next step.

FossilOrigin-Name: 8b4aa0c7a2122bbe60432edadf27e490e31ec987
 2013-10-05 19:18:00 +00:00
drh
03e1754e31 Merge trunk changes. 
FossilOrigin-Name: c6ac80ed8d5240dd30783d62d9f133e159809dec
 2013-10-04 20:39:44 +00:00
drh
d3037a4123 Further refinements of the index scanning speed logic. 
FossilOrigin-Name: e5d9371da92b4cc2c1df177cf40e0ced4d4c7421
 2013-10-04 18:29:25 +00:00
drh
d9e3cad2f8 Progress toward using the iScanRatio information on indices. Many tests 
are still failing.

FossilOrigin-Name: 6c352edbba85a15ca356b5e131f4b3b2723d1774
 2013-10-04 02:36:19 +00:00
drh
5f33f37580 Make sure the count(*) optimization works correctly even when partial 
indices are present.  Ticket [a5c8ed66cae].

FossilOrigin-Name: 9f2f4c0a50808910ad01c8c4352367f25747be08
 2013-10-04 00:00:12 +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
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
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
drh
d58d3278cb Performance optimization: Avoid calling convertCompoundSelecctToSubquery() 
on queries that do not use the UNION, EXCEPT, or INTERSECT operators.

FossilOrigin-Name: c589b2fed7beabc2337d701094c22635914d9c23
 2013-08-05 22:05:02 +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
619a1305e7 Fill out an initial implementation of the sqlite3ExprImpliesExpr() function. 
FossilOrigin-Name: 8e07aa2ad5579aeb82174ce5bd432ddb9c058bc1
 2013-08-01 13:04:46 +00:00
drh
6457a353bc Modify the query planner interface so that it always passes in the result set. 
This is the first step toward adding an optimization that will omit tables
from a join that do not contribute to the result.

FossilOrigin-Name: 2c2577e69ccb47f1af674a755e71221e2ca0b322
 2013-06-21 00:35:37 +00:00
drh
93ec45d560 Simplifications to the NGQP. Add the queryplantest makefile target. Add 
testcase() macros in the NGQP.

FossilOrigin-Name: eaf1f1b405ec2c498092527fae00e5dbe9e176c1
 2013-06-17 18:20:48 +00:00
drh
613ba1ea9c Fix compiler warnings. 
FossilOrigin-Name: 3e8ac46918c68723bd199dbec8b0901457d524a9
 2013-06-15 15:11:45 +00:00
drh
8a4380d761 Fixes to EXPLAIN QUERY PLAN output. Change weights back to something closer 
to what they are in legacy.  More test case fixes.

FossilOrigin-Name: 36373b85f9a97840aa06e24ae31c12fcfbae084e
 2013-06-11 02:32:50 +00:00
drh
c63367ef68 Fix some minor issues with logarithmic cost in NGQP. 
FossilOrigin-Name: 69cf877283d362915edddf1822fbf7a9f86278b3
 2013-06-10 20:46:50 +00:00
drh
6f32848d61 Move the definitions of the WhereLevel and WhereInfo objects out of 
sqliteInt.h and into where.c.  This will facilitate future refactoring
of the internal query planner data structures.

FossilOrigin-Name: 1574653b9b4522b489d4c62d9cf70166bb3bddfd
 2013-06-05 23:39:34 +00:00
drh
f7b5496e8e Many small harmless comment changes. Removal of obsolete comments and 
fixing misspelled words.  No changes to code.

FossilOrigin-Name: a0d5cc9315dc6e9ef7dee4c3dfabf4e562d64376
 2013-05-28 12:11:54 +00:00
drh
c01b7306ae Make sure the ORDER BY collating sequences are compatible with the 
comparison collations before using the merge algorithm for compound
SELECT statements.  Candidate fix for ticket [6709574d2a8d8].

FossilOrigin-Name: fc3630cdef6e2cdbfb4e7b373d1a094753e55016
 2013-05-07 17:49:08 +00:00
drh
aa87f9a68b Make sure the affinity and datatype of sub-subqueries are initialized 
prior to subqueries as the latter relies on the former.

FossilOrigin-Name: 39b4e6ff9316cc78ea88349091e195b8104d1e9e
 2013-04-25 00:57:10 +00:00
drh
ed17167e1d Fix a simple comment typo. No changes to code. 
FossilOrigin-Name: f136bd95824dc95b9e6acdc4d55db263ba13fbaa
 2013-04-24 13:50:09 +00:00