Find the minimum value. This function returns the lowest value in a set of values, applicable to numbers, strings, and dates.
Returns the minimum value of expr. MIN() may take a string argument, in which case it returns the minimum string value. The DISTINCT keyword can be used to find the minimum of the distinct values of expr, however, this produces the same result as omitting DISTINCT.
Note that and fields are currently compared by their string value rather than their relative position in the set, so MIN() may produce a different lowest result than ORDER BY ASC.
It is an , and so can be used with the clause.
MIN() can be used as a .
MIN() returns NULL if there were no matching rows.
Not only ascending, but also can be used to optimize MIN.
Only ascending indexes can be used to optimize MIN.
MIN() with a string:
Be careful to avoid this common mistake, not grouping correctly and returning mismatched data:
Difference between ORDER BY ASC and MIN():
As a :
(average)
(maximum)
(sum total)
returns the smallest value from a list.
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MIN([DISTINCT] expr)CREATE TABLE student (name CHAR(10), test CHAR(10), score TINYINT);
INSERT INTO student VALUES
('Chun', 'SQL', 75), ('Chun', 'Tuning', 73),
('Esben', 'SQL', 43), ('Esben', 'Tuning', 31),
('Kaolin', 'SQL', 56), ('Kaolin', 'Tuning', 88),
('Tatiana', 'SQL', 87), ('Tatiana', 'Tuning', 83);
SELECT name, MIN(score) FROM student GROUP BY name;
+---------+------------+
| name | MIN(score) |
+---------+------------+
| Chun | 73 |
| Esben | 31 |
| Kaolin | 56 |
| Tatiana | 83 |
+---------+------------+SELECT MIN(name) FROM student;
+-----------+
| MIN(name) |
+-----------+
| Chun |
+-----------+SELECT name,test,MIN(score) FROM student;
+------+------+------------+
| name | test | MIN(score) |
+------+------+------------+
| Chun | SQL | 31 |
+------+------+------------+CREATE TABLE student2(name CHAR(10),grade ENUM('b','c','a'));
INSERT INTO student2 VALUES('Chun','b'),('Esben','c'),('Kaolin','a');
SELECT MIN(grade) FROM student2;
+------------+
| MIN(grade) |
+------------+
| a |
+------------+
SELECT grade FROM student2 ORDER BY grade ASC LIMIT 1;
+-------+
| grade |
+-------+
| b |
+-------+CREATE OR REPLACE TABLE student_test (name CHAR(10), test CHAR(10), score TINYINT);
INSERT INTO student_test VALUES
('Chun', 'SQL', 75), ('Chun', 'Tuning', 73),
('Esben', 'SQL', 43), ('Esben', 'Tuning', 31),
('Kaolin', 'SQL', 56), ('Kaolin', 'Tuning', 88),
('Tatiana', 'SQL', 87);
SELECT name, test, score, MIN(score)
OVER (PARTITION BY name) AS lowest_score FROM student_test;
+---------+--------+-------+--------------+
| name | test | score | lowest_score |
+---------+--------+-------+--------------+
| Chun | SQL | 75 | 73 |
| Chun | Tuning | 73 | 73 |
| Esben | SQL | 43 | 31 |
| Esben | Tuning | 31 | 31 |
| Kaolin | SQL | 56 | 56 |
| Kaolin | Tuning | 88 | 56 |
| Tatiana | SQL | 87 | 87 |
+---------+--------+-------+--------------+