CORR returns the coefficient of a pair of numbers.
Syntax:
CORR(expression1, expression2)
Both expressions can NUMBER values or any value that can be converted to a NUMBER.
e.g.
SELECT id, CORR(list_price, min_price) as RESULTS
FROM product_info
GROUP BY supplier_id
NOTE: There are other variations of CORR that use differing algorithms to calculate the result, see the Oracle SQL reference for more information on these.
Corr – Oracle SQL Function