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Getting Minimum and Maximum Value in MySQL
We need to use the MAX(columnName) to find the Maximum value in a column, whereas use the MIN(columnName) to find the Maximum value in a column.
Let’s say following is the syntax to find the highest and lowest value in a specific column −
mysql> SELECT @min_val:=MIN(columnName),@max_val:=MAX(columnName) FROM tableName; mysql> SELECT * FROM tableName WHERE columnName=@min_val OR columnName=@max_val;
Note: Let’s say we have a database named ‘StudentsRecords’ and a table named ‘STUDENT.
Following is our table <STUDENT> −
StudentId | StudentMarks |
---|---|
S001 | 90 |
S002 | 97 |
S003 | 72 |
We will now write the query −
Query
mysql> SELECT @min_val:=MIN(StudentMarks),@max_val:=MAX(StudentMarks) FROM STUDENT; mysql> SELECT * FROM STUDENT WHERE StudentMarks =@min_val OR StudentMarks =@max_val;
Output
+---------------------+ | StudentMarks | +---------------------+ | 97 | +---------------------+
In the above query, ‘StudentMarks’refers to the name of the column. The ‘STUDENT’ refers to the name of the table from which the minimum and maximum value is being queried.
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