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Commit ac61a04a authored by Tom Lane's avatar Tom Lane
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Fix ExecSubPlan to handle nulls per the SQL spec --- it didn't combine

nulls with non-nulls using proper three-valued boolean logic.  Also clean
up ExecQual to make it clearer that ExecQual *does* follow the SQL spec
for boolean nulls.  See '[BUGS] (null) != (null)' thread around 10/26/99
for more detail.
parent 6b99fcf3
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