avgWeighted

Syntax

Arguments

• — Values.
• weight — Weights of the values.

x and weight must both be
Integer,
, or
Decimal,
but may have different types.

Returned value

• NaN if all the weights are equal to 0 or the supplied weights parameter is empty.
• Weighted mean otherwise.

Return type is always .

Query:

SELECT avgWeighted(x, w)

Result:

┌─avgWeighted(x, weight)─┐
│                      8 │
└────────────────────────┘

Example

Query:

Result:

┌─avgWeighted(x, weight)─┐
│                      8 │

Query:

SELECT avgWeighted(x, w)
FROM values('x Int8, w Int8', (0, 0), (1, 0), (10, 0))

Result:

Example

Query:

CREATE table test (t UInt8) ENGINE = Memory;
SELECT avgWeighted(t) FROM test

Result:

┌─avgWeighted(x, weight)─┐
└────────────────────────┘