SELECT * FROM Corr_Reduce ( ON Corr_Map ( ON { table_name | view_name | (query) } PARTITION BY group_column [,group_column [,...] [ TargetColumns ({ 'target_column_name' | target_column_range }[,...]) ] KeyName ('key_name') [ GroupByColumns ({ 'group_column' | 'group_column_range' }[,...]) ] ) PARTITION BY key_name[,group_column [,...]] );