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       During actual execution of the query plan.  Partition pruning may
       also be performed here to remove partitions using values which are
       only known during actual query execution.  This includes values
       from subqueries and values from execution-time parameters such as
       those from parameterized nested loop joins.  Since the value of
       these parameters may change many times during the execution of the
       query, partition pruning is performed whenever one of the
     