Special case NOT(IS NULL) predicate stats

Teradata / presto

Teradata Distribution of Presto -- A Distributed SQL Query Engine for Big Data

http://www.teradata.com/presto

Apache License 2.0

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Closed rschlussel-zz closed 7 years ago

rschlussel-zz commented 7 years ago

When the input to a not expression is an IsNullPredicate, compute stats for an IsNotNullPredicate.