min

用于计算一组值中最小值的聚合函数。

​

min

引入版本：v1.1.0

用于计算一组值中的最小值的聚合函数。

语法

min(column)

参数

• column — 列名或表达式。Any

返回值

返回分组中的最小值，返回类型与输入相同。Any

示例

简单的 min 示例

Query

CREATE TABLE employees (name String, salary UInt32) ENGINE = Memory;
INSERT INTO employees VALUES ('Alice', 3000), ('Bob', 4000), ('Charlie', 3500);

SELECT min(salary) FROM employees;

Response

┌─min(salary)─┐
│        3000 │
└─────────────┘

结合 GROUP BY 的 Min

Query

CREATE TABLE sales (department String, revenue UInt32) ENGINE = Memory;
INSERT INTO sales VALUES ('Engineering', 100000), ('Engineering', 120000), ('Marketing', 80000), ('Marketing', 90000);

SELECT department, min(revenue) FROM sales GROUP BY department ORDER BY department;

Response

┌─department──┬─min(revenue)─┐
│ Engineering │       100000 │
│ Marketing   │        80000 │
└─────────────┴──────────────┘