Ramil Kalimullin 0a05053593 Fix for bug #42957: no results from ...

select where .. (col=col and col=col) or ... (false expression)

Problem: optimizer didn't take into account a singular case 
when we eliminated all the predicates at the AND level of WHERE.
That may lead to wrong results.

Fix: replace (a=a AND a=a...) with TRUE if we eliminated all the
predicates.

2009-03-16 09:02:10 +04:00

175 KiB

Raw Blame History

View Raw