mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-14 02:12:21 +00:00
46 lines
1.3 KiB
Markdown
46 lines
1.3 KiB
Markdown
---
|
|
slug: /zh/sql-reference/aggregate-functions/reference/simplelinearregression
|
|
sidebar_position: 220
|
|
---
|
|
|
|
# simpleLinearRegression {#simplelinearregression}
|
|
|
|
执行简单（一维）线性回归。
|
|
|
|
**语法**
|
|
|
|
``` sql
|
|
simpleLinearRegression(x, y)
|
|
```
|
|
|
|
**参数**
|
|
|
|
- `x` — x轴。
|
|
- `y` — y轴。
|
|
|
|
**返回值**
|
|
|
|
符合`y = a*x + b`的常量 `(a, b)` 。
|
|
|
|
**示例**
|
|
|
|
``` sql
|
|
SELECT arrayReduce('simpleLinearRegression', [0, 1, 2, 3], [0, 1, 2, 3])
|
|
```
|
|
|
|
``` text
|
|
┌─arrayReduce('simpleLinearRegression', [0, 1, 2, 3], [0, 1, 2, 3])─┐
|
|
│ (1,0) │
|
|
└───────────────────────────────────────────────────────────────────┘
|
|
```
|
|
|
|
``` sql
|
|
SELECT arrayReduce('simpleLinearRegression', [0, 1, 2, 3], [3, 4, 5, 6])
|
|
```
|
|
|
|
``` text
|
|
┌─arrayReduce('simpleLinearRegression', [0, 1, 2, 3], [3, 4, 5, 6])─┐
|
|
│ (1,3) │
|
|
└───────────────────────────────────────────────────────────────────┘
|
|
```
|