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2 Commits

Author SHA1 Message Date
Igor Babaev
40c42468bc Fixed LP bug #806057. 
A table expression with a natural join or a USING clause is transformed
into an equivalent expression with equi-join ON conditions. If a reference
to a virtual column happened to occur only in these generated equi-join
conditions then it was not erroneously marked in the TABLE::vcol_set bitmap.
This could lead to wrong results for queries containing natural join
expressions or USING clauses.
 2011-12-29 15:09:20 -08:00
Igor Babaev
f7a75b999b The main commit of Andrey Zhakov's patch introducing vurtual(computed) columns. 
The original patch has been ameliorated by Sanja and Igor.
 2009-10-16 15:57:48 -07:00