Name
REGR_SXY — Auxiliary function used to compute various diagnostic statistics.
Synopsis
numeric REGR_SXY ( |
in expr1 any , |
in expr2 any ); |
Description
REGR_SXY makes the following computation after eliminating NULL (expr1, expr2) pairs:
REGR_COUNT(expr1, expr2) * COVAR_POP(expr1, expr2)
Parameters
expr1
Number expression.
expr2
Number expression.
Return Types
The function returns a value of type NUMERIC. If the function is applied to an empty set, then it returns null.