SQLite MIN()函数

SQLite MIN()函数用于获取表达式或给定列的最小值。

语法

SELECT MIN(aggregate_expression)  
FROM tables  
[WHERE conditions];

在GROUP BY子句中使用Min()函数时的语法：

SELECT expression1, expression2, ... expression_n  
MIN(aggregate_expression)  
FROM tables  
[WHERE conditions]  
GROUP BY expression1, expression2, ... expression_n;

示例1：

假设有一个名为student的表，具有以下数据：

从student表中检索学生的最低费用(fees)：

SELECT MIN(FEES) AS "Lowest Fees"  FROM STUDENT; 

-- 最小年龄
SELECT MIN(age) AS "Lowest age"  FROM STUDENT;

执行上面查询代码，得到以下结果 -

sqlite> SELECT MIN(FEES) AS "Lowest Fees"  FROM STUDENT;
2000.0
sqlite>
sqlite> SELECT MIN(FEES) AS "Lowest Fees"  FROM STUDENT;
2000.0
sqlite>
sqlite> -- 最小年龄
sqlite> SELECT MIN(age) AS "Lowest age"  FROM STUDENT;

sqlite>

示例2：

使用具有的GROUP BY子句的MIN()函数：

从student表中检索NAME和MIN FEES，并按NAME的数据排序：

SELECT NAME, MIN(FEES) AS "Lowest Fees"  
FROM STUDENT  
WHERE ID <= 8  
GROUP BY NAME;

执行上面代码，得到以下结果 -

sqlite> SELECT NAME, MIN(FEES) AS "Lowest Fees"
   ...> FROM STUDENT
   ...> WHERE ID <= 8
   ...> GROUP BY NAME;
Avgsu|2000.0
Javasu|18000.0
Linsu|10000.0
Maxsu|20000.0
Minsu|5000.0
Sqlsu|25000.0
sqlite>