SQL MIN command: MySQL on Minimum or lowest value in a field

Minimum value in a numeric field can be collected by applying MIN() SQL command.
We will try MIN sql command and how to use it in our tables. But the best way to use MIN command is to apply it in a numeric field.Here is our table with all the records.

id	name	class	mark
1	John Deo	Four	75
2	Max Ruin	Three	85
3	Arnold	Three	55
4	Krish Star	Four	60
5	John Mike	Four	60
6	Alex John	Four	55

You can check SQL MAX command to get maximum or highest value of a range of records.

We will apply the MIN command here like this to the field mark

SELECT MIN( mark ) FROM `student`

MIN(mark)
55

The command will locate the minimum value of the mark field and return. We can define some header like this also.

SELECT MIN(mark) as min_mark FROM `student`

min_mark
55

Minimum mark in each class

Now let us find out what is the minimum mark ( or lowest ) in each class. Here we can use the Group By command to find out the minimum mark obtained by each class

SELECT class, min( mark ) as min_mark FROM `student` GROUP BY class

class	min_mark
Four	55
Three	55

Here minimum mark of each class is displayed. Since we have two class in our table so the sql command has returned two class with lowest mark in each of them. We have to use Group By clause if we ask for the query to return any other field name other than the min. Otherwise system will generate error.

Getting all the details of the record having minimum ( min ) data

Among the students who got the minimum mark? This is done by using SQL Sub query. Like this .

SELECT * FROM `student` WHERE mark=(select min(mark) from student)

Output is here

id	name	class	mark
6	Alex John	Four	55

Using SQL with MIN Query in PHP Script

First we will connect to MySQL database.

Here is the sample code.

<?Php
require "config.php";

$count="SELECT class, MIN( mark ) as min_mark FROM `student` GROUP BY class";

echo "<table>";
echo "<tr><th>class</th><th>max_mark</th></tr>";
foreach ($dbo->query($count) as $row) {
echo "<tr ><td>$row[class]</td><td>$row[min_mark]</td></tr>";
}
echo "</table>";
?>

SQL Math References Maximum value Query

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hmds	04-08-2011
This is great, but how would you go about getting the id of the student with the lowest mark in each class in this case. So, to return id class min_mark 3 Four 55 6 Three 55

Avinash Kumar	21-05-2012
select name,price from table where price=(select min(price) from table);

smo1234	26-04-2019
test after removal of js file

SQL MIN Command

Minimum mark in each class

Getting all the details of the record having minimum ( min ) data

Using SQL with MIN Query in PHP Script

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