2 commits

Author	SHA1	Message	Date
Martin Hansson	d03133dccf	Post-push fix to disable a subset of the test case for Bug#47762. ... This has been back-ported from 6.0 as the problems proved to afflict 5.1 as well. The fix exposed two new bugs. They were reported as follows. Bug no 52174: Sometimes wrong plan when reading a MAX value from non-NULL index Bug no 52173: Reading NULL value from non-NULL index gives wrong result in embedded server Both bugs taken together affect a much smaller class of queries than #47762, so the fix stays for now.	2010-03-19 09:23:44 +01:00
Martin Hansson	7cb796717e	Bug#47762: Incorrect result from MIN() when WHERE tests NOT ... NULL column for NULL The optimization to read MIN() and MAX() values from an index did not properly handle comparisons with NULL values. Fixed by giving up the particular optimization step if there are non-NULL safe comparisons with NULL values, as the result is NULL anyway. Also, Oracle copyright notice was added to all files.	2010-03-16 15:51:00 +01:00