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5 Commits

Author SHA1 Message Date
drh 21172c4cc0 Add an optimization that attempts to run a subquery as a coroutine rather 
than manifesting it into a temporary table.

FossilOrigin-Name: 7af3acbbd49a2114fcdada9ec907c68ba9b053bd
 2012-10-30 00:29:07 +00:00
drh 8850177924 When analyzing the right-hand side of IN operators to see if the IN operator 
can work with an index, be sure to decend into nested subqueries.
Fix for ticket [1a1308d2538d7]

FossilOrigin-Name: 0156f10e23daca0e2504cd293a67ed0233d254d0
 2011-09-16 17:43:06 +00:00
drh 7157e8eac1 Further streamlining of the subquery materializer. New test cases for 
ticket [002caede898a]

FossilOrigin-Name: ff8b76b25b42497a7374de56c6a8f34cbe70cd6a
 2011-09-16 16:00:51 +00:00
drh 4327aeaafd Adding test case for ticket [002caede898] 
FossilOrigin-Name: 62dfc51a495be017605cf315d72e2db91bfa28f7
 2011-09-15 19:39:42 +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