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Resultant table: student

Rollno Name Marks DOB
3. Ankit Sharma 76 02-Feb-2000
6. Diksha Sharma 80 17-Dec-1999
2 rows in a set (0.02 sec)

This command shall display the Rollno, Name, Marks and DOB of all the students whose Name
contains the letter ‘r’ from the third last position.

12.18 SORTING IN SQL—ORDER BY

The SQL ORDER BY clause is used to sort the data in ascending or descending order based on one
or more columns. The ORDER BY keyword is used to sort the result-set by one or more fields in a
table. This clause sorts the records in the ascending order (ASC) by default. Therefore, in order to
sort the records in descending order, DESC keyword is to be used. Sorting using ORDER BY clause
can be done on multiple columns, separated by comma.
Rollno Name Marks
Syntax for ORDER BY clause: 8. Akshay Dureja 90

3. Ankit Sharma 76
SELECT <column-list> FROM <table_name> [WHERE
2. Deep Singh 98
<condition>] ORDER BY <column_name> [ASC|DESC];
6. Diksha Sharma 80
Here, WHERE clause is optional.
7. Gurpreet Kaur NULL
For example, 5. Payal Goel 82
10. Prateek Mittal 75
 To display the roll number, name and marks of students
4. Radhika Gupta 78
on the basis of their marks in the ascending order.
1. Raj Kumar 93
 mysql> SELECT Rollno, Name, Marks FROM student
9. Shreya Anand 70
ORDER BY Name;

 To display the roll number, name and marks of all the students in the descending order of their
marks and ascending order of their names.
 mysql> SELECT Rollno, Name, Marks FROM student ORDER BY Marks DESC, Name;
Sorting on Column Alias

If a column alias is defined for a column, it can be used for displaying rows in ascending
or descending order using ORDER BY clause.

For example, SELECT Rollno, Name, Marks AS Marks_obtained
FROM student
Alias name
ORDER BY Marks_obtained;
AGGREGATE FUNCTIONS
Relational Database and SQL
Till now, we have studied about single-row functions which work on a single value. SQL also
provides multiple-row functions which work on multiple values. So, we can apply SELECT query
on a group of records rather than the entire table. Therefore, these functions are called Aggregate
functions or Group functions.

12.43