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Author SHA1 Message Date
drh 9be1870994 Simplified implementation of indexing with the IS operator. 
FossilOrigin-Name: 95b1f9bf14e490c6c6bba9ea78aeab712a44aab5
 2015-05-13 19:33:41 +00:00
drh 5822d6feb2 Fix test cases for the new EXPLAIN QUERY PLAN format. Add the 
wherecosttest tool.  Other fixes to logarithm cost.

FossilOrigin-Name: aa580e368e3c398b8377b80342dfdd906324c248
 2013-06-10 23:30:09 +00:00
dan 0c733f67d8 Where possible, take advantage of the rowid at the end of index records to optimize range constraints (<, >, <=, >=) on the rowid column. 
FossilOrigin-Name: 3b58f5f06648205a47e5cace0201269c406e476a
 2011-11-16 15:27:09 +00:00