regr_sxx

Computes the “sum of squares” of the independent variable, sum(X^2) - sum(X)^2/N.

English manual coverage begins with PostgreSQL 7.1. Source history and runtime observations have their own recorded version boundaries.

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group: aggregate
group label: 聚合函数
lang: en
layout: table-new
pages: functions-aggregate.html
prose only: false

Definition PG 18

Computes the “sum of squares” of the independent variable, sum(X^2) - sum(X)^2/N.

Signatures and overloads

regr_sxx ( Y double precision, X double precision ) → double precision → double precision

Computes the “sum of squares” of the independent variable, sum(X^2) - sum(X)^2/N.

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Complete source facts

documentation revision

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Source references

Original manual reference

Full definition and evidence JSON

Definition sources

center · PostgreSQL 18 · wiki-repair-20261023:5ed1ac482e333ded0c147cb69f4817f0763c56ceaa134dff113f6ddc6fe3ef8e

Text language: en · wiki-repair-20261023:5ed1ac482e333ded0c147cb69f4817f0763c56ceaa134dff113f6ddc6fe3ef8e