In Oracle/PLSQL, the corr function returns the coefficient of correlation of a set of number pairs.

The syntax for the corr function is:

corr( n ,m ) [ over (analytic_clause) ]

n and m are the numbers to use to calculate the cofficient of correlation.

The corr function requires at least two rows.

For example:

select corr(quantity, commission)
from sales;


select max_entents, corr(max_trans, initial_extent)
from data
group by max_extents;