Categories:

Aggregate Functions (Linear Regression) , Window Functions

REGR_SXX

Returns REGR_COUNT(y, x) * VAR_POP(x) for non-null pairs.

Syntax

REGR_SXX(y, x)

Usage Notes

  • DISTINCT is not supported for this function.

Examples

create or replace table aggr(k int, v decimal(10,2), v2 decimal(10, 2));
insert into aggr values(1, 10, null);
insert into aggr values(2, 10, 11), (2, 20, 22), (2, 25,null), (2, 30, 35);
select k, regr_sxx(v, v2) from aggr group by k;

---+-----------------+
 k | regr_sxx(v, v2) |
---+-----------------+
 1 | [NULL]          |
 2 | 288.666666667   |
---+-----------------+