drh
d4d595f94c
Make sure the min() and max() optimizations work on empty indexed tables.
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Ticket #296 . (CVS 914)
FossilOrigin-Name: 98ef6110068e5ed3cd77a14b004f890b79b731f7
2003-04-17 12:44:23 +00:00
drh
1a844c380b
Fix a bug in the reverse scan logic that comes up when the table being
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scanned is empty. Add additional tests for the reverse scan. (CVS 797)
FossilOrigin-Name: 0051c87d5e8d07fae09da2eb7b0d8cbd1bbd3c8e
2002-12-04 22:29:28 +00:00
drh
dd4852c3d1
Fixes to the logic that decides if the ORDER BY can be ignored due to the
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use of an index. Tests updated. (CVS 796)
FossilOrigin-Name: bfb9a2aa939ecffc5dc2c7c23bddd57d357bdf13
2002-12-04 21:50:16 +00:00
drh
6977fea801
Correctly handle column names and string constants in parentheses.
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Fix for ticket #179 . (CVS 770)
FossilOrigin-Name: 3b68aa25c451b7c09ece457ac2b70a9a5d93508a
2002-10-22 23:38:04 +00:00
drh
c330af1dca
Disable sorting by indices if there is a COLLATE subclause in the
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ORDER BY clause. (CVS 713)
FossilOrigin-Name: 2438da791afb53b4f1c7a9ff9705d393c86f3cbd
2002-08-14 03:03:57 +00:00
drh
e31847449e
The query optimizer now attempts to satisfy an ORDER BY clause using
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an index. Sorting is still used if there are no suitable indices. (CVS 628)
FossilOrigin-Name: f09e19b43ef61073713cf32282c90ea666229eba
2002-06-19 14:27:05 +00:00
drh
df199a25bd
Make the LIMIT clause work even if the destination of the SELECT is
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something other than a callback. (Ticket #66 ) (CVS 619)
FossilOrigin-Name: 699cf362083043615eb88635a228bfa46a315c9c
2002-06-14 22:38:41 +00:00
drh
48185c15c7
Added tests for the new IN operator optimizer and fixed a bug that the
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new tests found. This completes the implementation of enhancement #63 . (CVS 612)
FossilOrigin-Name: 2a710e18176c486525f0abb06644a511a2cd1d7a
2002-06-09 01:55:20 +00:00
drh
08192d5f76
Fix for ticket #31 : Do not attempt the flattening optimization if the
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subselect does not contain a FROM clause. Handle the special case where
a WHERE clause is constant. (CVS 548)
FossilOrigin-Name: 24e4cf73d22bb41d26bf3c833f1854a9c90923e8
2002-04-30 19:20:28 +00:00
drh
8aff10153e
Bug fixing in the new integer primary key code. (CVS 334)
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FossilOrigin-Name: 29cab124b4f7eae9d9feb60d2f3a2c443fd9b9aa
2001-12-22 14:49:24 +00:00
drh
487ab3ca18
The new code for taking advantage of inequalities in WHERE clauses
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is in place. It appears to work. (CVS 305)
FossilOrigin-Name: 262bcd17df19f45def6144b5a7e0602ca5b03deb
2001-11-08 00:45:21 +00:00
drh
b19a2bc603
Disclaimed copyright. Preparing for release 2.0. (CVS 250)
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FossilOrigin-Name: 4e926efe2b59adfec4086eb1d2ba830238facb4c
2001-09-16 00:13:26 +00:00
drh
c87fa69a29
Add index access methods to the DBBE in preparation for adding a new
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DBBE for the btree.c module. (CVS 236)
FossilOrigin-Name: c15f6ffc4d41f30a06d750c8015226713ae0126b
2001-08-19 18:19:46 +00:00
drh
6de4f4ca1c
:-) (CVS 93)
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FossilOrigin-Name: 3c0540e6fb103402c3f37fd2df17f9786b363db0
2000-06-12 12:20:48 +00:00
