Igor Babaev c44c9207f0 Fixed LP bug #685952. ...

When ORing two AND-OR formulas the range optimizer could miss
a conjunct in one of AND-OR formulas in the result. If the
index merge union plan to access a table is formed by this 
formula that, in general, is not inferred from the original
where/on condition,the query could return an incorrect result set.

2010-12-07 12:14:28 -08:00

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