Practical – 01
Name – Tarun Joshi
Student ID – 23711144
Course – MCA.
Semester – II.
Date – 20-Feb-2024.
Objective – Demonstrate the command in Data Definition Language (Create Drop, Alter, Rename, Truncate, Backup).
mysql> create table students(id int, Name varchar(20), course varchar(10));
mysql> describe students;
+--------+-------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+--------+-------------+------+-----+---------+-------+
| id | int | YES | | NULL | |
| Name | varchar(20) | YES | | NULL | |
| course | varchar(10) | YES | | NULL | |
+--------+-------------+------+-----+---------+-------+
mysql> alter table students add Age int;
mysql> insert into students values(1,'Bhavesh','MCA',20);
mysql> insert into students values(2,'Neha','MCA',21);
mysql> insert into students values(3,'Laxman','MCA',22);
mysql> insert into students values(4,'Hema','MCA',22);
mysql> select * from students;
+------+---------+--------+------+
| id | Name | course | Age |
+------+---------+--------+------+
| 1 | Bhavesh | MCA | 20 |
| 2 | Neha | MCA | 21 |
| 3 | Laxman | MCA | 22 |
| 4 | Hema | MCA | 22 |
+------+---------+--------+------+
mysql> alter table students modify column id int not null unique;
mysql> alter table students modify column id int not null unique;
mysql> describe students;
+--------+-------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+--------+-------------+------+-----+---------+-------+
| id | int | NO | PRI | NULL | |
| Name | varchar(20) | YES | | NULL | |
| course | varchar(10) | YES | | NULL | |
| Age | int | YES | | NULL | |
+--------+-------------+------+-----+---------+-------+
mysql> select * from students where Age='22';
+----+--------+--------+------+
| id | Name | course | Age |
+----+--------+--------+------+
| 3 | Laxman | MCA | 22 |
| 4 | Hema | MCA | 22 |
+----+--------+--------+------+
2 rows in set (0.00 sec)
mysql> select * from students where Age>21;
+----+--------+--------+------+
| id | Name | course | Age |
+----+--------+--------+------+
| 3 | Laxman | MCA | 22 |
| 4 | Hema | MCA | 22 |
| 5 | Lax | MCA | 23 |
| 6 | Abhi | MCA | 24 |
| 7 | Naman | MBA | 25 |
+----+--------+--------+------+
5 rows in set (0.00 sec)
mysql> select * from students where Age<21;
+----+---------+--------+------+
| id | Name | course | Age |
+----+---------+--------+------+
| 1 | Bhavesh | MCA | 20 |
+----+---------+--------+------+
1 row in set (0.00 sec)
mysql> select * from students where Age<>23;
+----+---------+--------+------+
| id | Name | course | Age |
+----+---------+--------+------+
| 1 | Bhavesh | MCA | 20 |
| 2 | Neha | MCA | 21 |
| 3 | Laxman | MCA | 22 |
| 4 | Hema | MCA | 22 |
| 6 | Abhi | MCA | 24 |
| 7 | Naman | MBA | 25 |
+----+---------+--------+------+
PRACTICAL – 7
Name:Tarun Joshi
Course: MCA
Student ID:2371114
Objective:- Write SQL queries using logical operations and operators
Code:-
AND Operator-
SELECT * FROM employees WHERE City = "Mumbai" AND Designation = "Project Manager";
| E_ID | Name | Salary | City | Designation | Date_of_Joining | Age |
| 1 | Sakshi Kumari | 50000 | Mumbai | Project Manager | 2021-06-20 | 24 |
| 10 | Mayuri Patel | 60000 | Mumbai | Project Manager | 2020-10-02 | 24 |
2. SQL BETWEEN Operator
SELECT * FROM employees WHERE Salary BETWEEN 50000 AND 90000;
| E_ID | Name | Salary | City | Designation | Date_of_Joining | Age |
| 1 | Sakshi Kumari | 50000 | Mumbai | Project Manager | 2021-06-20 | 24 |
| 2 | Tejaswini Naik | 75000 | Delhi | System Engineer | 2019-12-24 | 23 |
| 4 | Anushka Tripathi | 90000 | Mumbai | Software Tester | 2021-06-13 | 24 |
| 6 | Rutuja Deshmukh | 60000 | Bangalore | Manager | 2019-07-17 | 26 |
| 7 | Swara Baviskar | 55000 | Jaipur | System Engineer | 2021-10-10 | 24 |
| 9 | Swati Kumari | 50000 | Pune | Software Tester | 2021-01-01 | 25 |
| 10 | Mayuri Patel | 60000 | Mumbai | Project Manager | 2020-10-02 | 24 |
| 12 | Shivani Wagh | 50500 | Delhi | Software Developer | 2016-09-10 | 25 |
| 13 | Kiran Maheshwari | 50000 | Nashik | HR | 2013-12-12 | 23 |
3. SQL OR Operator-
SELECT * FROM employees WHERE Designation = "System Engineer" OR City = "Mumbai";
| E_ID | Name | Salary | City | Designation | Date_of_Joining | Age |
| 1 | Sakshi Kumari | 50000 | Mumbai | Project Manager | 2021-06-20 | 24 |
| 2 | Tejaswini Naik | 75000 | Delhi | System Engineer | 2019-12-24 | 23 |
| 4 | Anushka Tripathi | 90000 | Mumbaipp | Software Tester | 2021-06-13 | 24 |
| 7 | Swara Baviskar | 55000 | Jaipur | System Engineer | 2021-10-10 | 24 |
| 10 | Mayuri Patel | 60000 | Mumbai | Project Manager | 2020-10-02 | 24 |
4. SQL IN Operator-
SELECT * FROM employees WHERE City IN ("Mumbai", "Bangalore", "Pune");
| E_ID | Name | Salary | City | Designation | Date_of_Joining | Age |
| 1 | Sakshi Kumari | 50000 | Mumbai | Project Manager | 2021-06-20 | 24 |
| 4 | Anushka Tripathi | 90000 | Mumbai | Software Tester | 2021-06-13 | 24 |
| 5 | Rucha Jagtap | 45000 | Bangalore | Project Manager | 2020-08-09 | 23 |
| 6 | Rutuja Deshmukh | 60000 | Bangalore | Manager | 2019-07-17 | 26 |
| 8 | Sana Sheik | 45000 | Pune | Software Engineer | 2020-09-10 | 26 |
| 9 | Swati Kumari | 50000 | Pune | Software Tester | 2021-01-01 | 25 |
| 10 | Mayuri Patel | 60000 | Mumbai | Project Manager | 2020-10-02 | 24 |
| 15 | Mohini Shah | 38000 | Pune | Software Developer | 2019-03-05 | 20 |
5. SQL NOT Operator-
SELECT * FROM employees WHERE NOT Designation = "Project Manager";
| E_ID | Name | Salary | City | Designation | Date_of_Joining | Age |
| 2 | Tejaswini NaikPractical – 01 | 75000 | Delhi | System Engineer | 2019-12-24 | 23 |
| 3 | Anuja Sharma | 40000 | Jaipur | Manager | 2021-08-15 | 26 |
| 4 | Anushka Tripathi | 90000 | Mumbai | Software Tester | 2021-06-13 | 24 |
| 6 | Rutuja Deshmukh | 60000 | Bangalore | Manager | 2019-07-17 | 26 |
| 7 | Swara Baviskar | 55000 | Jaipur | System Engineer | 2021-10-10 | 24 |
PRACTICAL – 5
Name: Tarun Joshi
Course: MCA
Student ID:23711144
Objective:- Write a query to understand the concept for Rollback,Commit and Check points
Code:-
RollBack:-
select* from Emp1;
+----------+--------+---------+
| emp_name | salary | dept_id |
+----------+--------+---------+
| Pradeep | 25000 | 301 |
| Yogesh | 30000 | 302 |
| Anchl | 20000 | 304 |
+----------+--------+---------+
DELETE FROM Emp1 WHERE dept_id = 301;
ROLLBACK;
select * from Emp1;
+----------+--------+---------+
| emp_name | salary | dept_id |
+----------+--------+---------+
| Pradeep | 25000 | 301 |
| Yogesh | 30000 | 302 |
| Anchl | 20000 | 304 |
+----------+--------+---------+
COMMIT;
DELETE FROM Emp1 WHERE dept_id = 304;
select * from Emp1;
+----------+--------+---------+
| emp_name | salary | dept_id |
+----------+--------+---------+
| Pradeep | 25000 | 301 |
| Yogesh | 30000 | 302 |
| Anchl | 20000 | 304 |
+----------+--------+---------+
PRACTICAL – 9
Name: Tarun Joshi
Course: MCA
Student ID:23711144
Objective:- Demonstrate the aggregate function (AVG , MIN, MAX , SUM , COUNT etc).
Code:-
MAX:-
select max(sallary) from student;
+--------------+
| max(sallary) |
+--------------+
| 530000 |
+--------------+
Average:-
select avg(sallary) from student;
+--------------+
| avg(sallary) |
+--------------+
| 264166.6667 |
Sum:-
select sum(sallary) from student;
+--------------+
| sum(sallary) |
+--------------+
| 1585000 |
Count:-
select count(ID) from student;
+-----------+
| count(ID) |
+-----------+
| 6 |
Min:-
select min(sallary) from student;
+--------------+
| min(sallary) |
+--------------+
| 25000 |
PRACTICAL – 11
Name: TarunJoshi
Course: MCA
Student ID:23711144
Objective:- Demonstrate the Union ,Intersection and Difference in tables.
Code:-
Union:-
SELECT * FROM First UNION
SELECT * FROM Second;
| ID | NAME |
| 1 | Yogesh |
| 2 | Akanksha |
| 3 | tarun |
| 4 | Pradeep |
| 5 | Nimisha |
Inersection:-
SELECT * FROM First INTERSECT
SELECT * FROM Second;
| ID | NAME |
| 3 | tarun |
Minus:-
SELECT column_name FROM table1
MINUS
SELECT column_name FROM table2;
| ID | NAME |
| 1 | Yogesh |
| 2 | Akanksha |
PRACTICAL – 12
Name: Tarun Joshi
Course: MCA
Student ID:23711144
Objective:- Demonstrate the Inner join,Left outer join ,Right outer join
Code:-
Inner JOIN:-
select * from stu inner join enroll on stu.id\=enroll.id;
+----+---------+------+------+------+--------+
| id | name | age | id | cid | course |
+----+---------+------+------+------+--------+
| 1 | nimi | 22 | 1 | 1 | mca |
| 3 | yogesh | 23 | 3 | 2 | bca |
| 4 | pradeep | 24 | 4 | 1 | mca |
+----+---------+------+------+------+--------+
Left Outer join:-
select * from stu left outer join enroll on stu.id\=enroll.id;
+----+----------+------+------+------+--------+
| id | name | age | id | cid | course |
+----+----------+------+------+------+--------+
| 1 | tarun| 22 | 1 | 1 | mca |
| 2 | akanksha | 22 | NULL | NULL | NULL |
| 3 | yogesh | 23 | 3 | 2 | bca |
| 4 | pradeep | 24 | 4 | 1 | mca |
+------+---------+------+------+------+--------+
Right outer join:-
select * from stu right outer join enroll on stu.id\=enroll.id;
+------+---------+------+------+------+--------+
| id | name | age | id | cid | course |
+------+---------+------+------+------+--------+
| 1 | tarun| 22 | 1 | 1 | mca |
| 3 | yogesh | 23 | 3 | 2 | bca |
| 4 | pradeep | 24 | 4 | 1 | mca |
+------+---------+------+------+------+--------+