Version 1.4
SELECT * FROM Corr_Reduce (
ON Corr_Map (
ON { table_name | view_name | (query) }
PARTITION BY group_column [, group_column [,...]]
[ TargetColumns
({ 'target_column' | target_column_range }[,...]) ]
KeyName ('key_name')
[ GroupByColumns
({ 'group_column' | 'group_column_range' }[,...]) ]
)
PARTITION BY key_name [, group_column [,...]]
);