Design at least 10 SQL queries for suitable database application using SQL DML statements: Insert, Select, Update, Delete with operators, functions, and set operator.

1. Practical No: 3
Problem Statement: Design at least 10 SQL queries for suitable database
application using SQL DML statements:
Insert, Select, Update, Delete with operators, functions, and set operator.
mysql> use prac3;
Database changed
mysql> DROP TABLE IF EXISTS emp;
Query OK, 0 rows affected, 1 warning (0.00 sec)
mysql>
mysql> CREATE TABLE emp (
-> empno decimal(4,0) NOT NULL,
-> ename varchar(10) default NULL,
-> job varchar(9) default NULL,
-> mgr decimal(4,0) default NULL,
-> hiredate date default NULL,
-> sal decimal(7,2) default NULL,
-> comm decimal(7,2) default NULL,
-> deptno decimal(2,0) default NULL
-> );
Query OK, 0 rows affected (0.06 sec)
mysql>
mysql> DROP TABLE IF EXISTS dept;
Query OK, 0 rows affected, 1 warning (0.00 sec)
mysql>
mysql> CREATE TABLE dept (
-> deptno decimal(2,0) default NULL,
-> dname varchar(14) default NULL,
-> loc varchar(13) default NULL
-> );
Query OK, 0 rows affected (0.01 sec)
mysql>
mysql> INSERT INTO emp VALUES ('7369','SMITH','CLERK','7902','1980-12-
17','800.00',NULL,'20');
Query OK, 1 row affected (0.02 sec)
mysql> INSERT INTO emp VALUES ('7499','ALLEN','SALESMAN','7698','1981-02-
20','1600.00','300.00','30');
Query OK, 1 row affected (0.04 sec)
mysql> INSERT INTO emp VALUES ('7521','WARD','SALESMAN','7698','1981-02-
22','1250.00','500.00','30');
Query OK, 1 row affected (0.00 sec)
mysql> INSERT INTO emp VALUES ('7566','JONES','MANAGER','7839','1981-04-
02','2975.00',NULL,'20');
Query OK, 1 row affected (0.00 sec)
mysql> INSERT INTO emp VALUES ('7654','MARTIN','SALESMAN','7698','1981-09-
28','1250.00','1400.00','30');
Query OK, 1 row affected (0.00 sec)
mysql> INSERT INTO emp VALUES ('7698','BLAKE','MANAGER','7839','1981-05-
01','2850.00',NULL,'30');
Query OK, 1 row affected (0.00 sec)
mysql> INSERT INTO emp VALUES ('7782','CLARK','MANAGER','7839','1981-06-
09','2450.00',NULL,'10');
Query OK, 1 row affected (0.01 sec)

2. mysql> INSERT INTO emp VALUES ('7788','SCOTT','ANALYST','7566','1982-12-
09','3000.00',NULL,'20');
Query OK, 1 row affected (0.00 sec)
mysql> INSERT INTO emp VALUES ('7839','KING','PRESIDENT',NULL,'1981-11-
17','5000.00',NULL,'10');
Query OK, 1 row affected (0.00 sec)
mysql> select ename, sal frommysql> select ename, sal from emp where sal between
1000 and 5000;
+--------+---------+
| ename | sal |
+--------+---------+
| ALLEN | 1600.00 |
| WARD | 1250.00 |
| JONES | 2975.00 |
| MARTIN | 1250.00 |
| BLAKE | 2850.00 |
| CLARK | 2450.00 |
| SCOTT | 3000.00 |
| KING | 5000.00 |
| TURNER | 1500.00 |
| ADAMS | 1100.00 |
| FORD | 3000.00 |
| MILLER | 1300.00 |
+--------+---------+
12 rows in set (0.00 sec)
emp where sal between 1000 and 5000;
+--------+---------+
| ename | sal |
+--------+---------+
| ALLEN | 1600.00 |
| WARD | 1250.00 |
| JONES | 2975.00 |
| MARTIN | 1250.00 |
| BLAKE | 2850.00 |
| CLARK | 2450.00 |
| SCOTT | 3000.00 |
| KING | 5000.00 |
| TURNER | 1500.00 |
| ADAMS | 1100.00 |
| FORD | 3000.00 |
| MILLER | 1300.00 |
+--------+---------+
12 rows in set (0.00 sec)
mysql> INSERT INTO emp VALUES ('7844','TURNER','SALESMAN','7698','1981-09-
08','1500.00','0.00','30');
Query OK, 1 row affected (0.00 sec)
mysql> INSERT INTO emp VALUES ('7876','ADAMS','CLERK','7788','1983-01-
12','1100.00',NULL,'20');
Query OK, 1 row affected (0.00 sec)
mysql> INSERT INTO emp VALUES ('7900','JAMES','CLERK','7698','1981-12-
03','950.00',NULL,'30');
Query OK, 1 row affected (0.00 sec)
mysql> INSERT INTO emp VALUES ('7902','FORD','ANALYST','7566','1981-12-
03','3000.00',NULL,'20');
Query OK, 1 row affected (0.00 sec)
mysql> INSERT INTO emp VALUES ('7934','MILLER','CLERK','7782','1982-01-
23','1300.00',NULL,'10');

3. Query OK, 1 row affected (0.01 sec)
mysql>
mysql> INSERT INTO dept VALUES ('10','ACCOUNTING','NEW YORK');
Query OK, 1 row affected (0.00 sec)
mysql> INSERT INTO dept VALUES ('20','RESEARCH','DALLAS');
Query OK, 1 row affected (0.00 sec)
mysql> INSERT INTO dept VALUES ('30','SALES','CHICAGO');
Query OK, 1 row affected (0.00 sec)
mysql> INSERT INTO dept VALUES ('40','OPERATIONS','BOSTON');
Query OK, 1 row affected (0.00 sec)
mysql> desc emp;
+----------+--------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+----------+--------------+------+-----+---------+-------+
| empno | decimal(4,0) | NO | | NULL | |
| ename | varchar(10) | YES | | NULL | |
| job | varchar(9) | YES | | NULL | |
| mgr | decimal(4,0) | YES | | NULL | |
| hiredate | date | YES | | NULL | |
| sal | decimal(7,2) | YES | | NULL | |
| comm | decimal(7,2) | YES | | NULL | |
| deptno | decimal(2,0) | YES | | NULL | |
+----------+--------------+------+-----+---------+-------+
8 rows in set (0.00 sec)
mysql> select * from emp;
+-------+--------+-----------+------+------------+---------+---------+--------+
| empno | ename | job | mgr | hiredate | sal | comm | deptno |
+-------+--------+-----------+------+------------+---------+---------+--------+
| 7369 | SMITH | CLERK | 7902 | 1980-12-17 | 800.00 | NULL | 20 |
| 7499 | ALLEN | SALESMAN | 7698 | 1981-02-20 | 1600.00 | 300.00 | 30 |
| 7521 | WARD | SALESMAN | 7698 | 1981-02-22 | 1250.00 | 500.00 | 30 |
| 7566 | JONES | MANAGER | 7839 | 1981-04-02 | 2975.00 | NULL | 20 |
| 7654 | MARTIN | SALESMAN | 7698 | 1981-09-28 | 1250.00 | 1400.00 | 30 |
| 7698 | BLAKE | MANAGER | 7839 | 1981-05-01 | 2850.00 | NULL | 30 |
| 7782 | CLARK | MANAGER | 7839 | 1981-06-09 | 2450.00 | NULL | 10 |
| 7788 | SCOTT | ANALYST | 7566 | 1982-12-09 | 3000.00 | NULL | 20 |
| 7839 | KING | PRESIDENT | NULL | 1981-11-17 | 5000.00 | NULL | 10 |
| 7844 | TURNER | SALESMAN | 7698 | 1981-09-08 | 1500.00 | 0.00 | 30 |
| 7876 | ADAMS | CLERK | 7788 | 1983-01-12 | 1100.00 | NULL | 20 |
| 7900 | JAMES | CLERK | 7698 | 1981-12-03 | 950.00 | NULL | 30 |
| 7902 | FORD | ANALYST | 7566 | 1981-12-03 | 3000.00 | NULL | 20 |
| 7934 | MILLER | CLERK | 7782 | 1982-01-23 | 1300.00 | NULL | 10 |
+-------+--------+-----------+------+------------+---------+---------+--------+
14 rows in set (0.00 sec)
mysql> select distinct(job) from emp;
+-----------+
| job |
+-----------+mysql> select ename, sal from emp where sal between 1000 and 5000;
+--------+---------+
| ename | sal |
+--------+---------+
| ALLEN | 1600.00 |
| WARD | 1250.00 |
| JONES | 2975.00 |
| MARTIN | 1250.00 |
| BLAKE | 2850.00 |
| CLARK | 2450.00 |

4. | SCOTT | 3000.00 |
| KING | 5000.00 |
| TURNER | 1500.00 |
| ADAMS | 1100.00 |
| FORD | 3000.00 |
| MILLER | 1300.00 |
+--------+---------+
12 rows in set (0.00 sec)
| CLERK |
| SALESMAN |
| MANAGER |
| ANALYST |
| PRESIDENT |
+-----------+
5 rows in set (0.00 sec)
mysql> select empno,ename,sal from emp where deptno=20 ;
+-------+-------+---------+
| empno | ename | sal |
+-------+-------+---------+
| 7369 | SMITH | 800.00 |
| 7566 | JONES | 2975.00 |
| 7788 | SCOTT | 3000.00 |
| 7876 | ADAMS | 1100.00 |
| 7902 | FORD | 3000.00 |
+-------+-------+---------+
5 rows in set (0.00 sec)
mysql> select empno,ename,sal from emp where deptno like 20 ;
+-------+-------+---------+
| empno | ename | sal |
+-------+-------+---------+
| 7369 | SMITH | 800.00 |
| 7566 | JONES | 2975.00 |
| 7788 | SCOTT | 3000.00 |
| 7876 | ADAMS | 1100.00 |
| 7902 | FORD | 3000.00 |
+-------+-------+---------+
5 rows in set (0.00 sec)
mysql> select empno,ename,sal from emp where ename like 'a%' ;
+-------+-------+---------+
| empno | ename | sal |
+-------+-------+---------+
| 7499 | ALLEN | 1600.00 |
| 7876 | ADAMS | 1100.00 |
+-------+-------+---------+
2 rows in set (0.00 sec)
mysql> select * from emp where ename like '__N%';
+-------+-------+-----------+------+------------+---------+------+--------+
| empno | ename | job | mgr | hiredate | sal | comm | deptno |
+-------+-------+-----------+------+------------+---------+------+--------+
| 7566 | JONES | MANAGER | 7839 | 1981-04-02 | 2975.00 | NULL | 20 |
| 7839 | KING | PRESIDENT | NULL | 1981-11-17 | 5000.00 | NULL | 10 |
+-------+-------+-----------+------+------------+---------+------+--------+
2 rows in set (0.00 sec)
mysql> select deptno as DEPTNO, MAX(sal) as "MAXIMUM SALARY" from emp group by
(deptno);
+--------+----------------+
| DEPTNO | MAXIMUM SALARY |

5. +--------+----------------+
| 10 | 5000.00 |
| 20 | 3000.00 |
| 30 | 2850.00 |
+--------+----------------+
3 rows in set (0.00 sec)
mysql> select count(sal) from emp where sal=3000;
+------------+
| count(sal) |
+------------+
| 2 |
+------------+
1 row in set (0.00 sec)
mysql> select MAX(sal) from emp;
+----------+
| MAX(sal) |
+----------+
| 5000.00 |
+----------+
1 row in set (0.00 sec)
mysql> select MIN(sal) from emp;
+----------+
| MIN(sal) |
+----------+
| 800.00 |
+----------+
1 row in set (0.00 sec)
mysql> select MIN(sal) least, MAX(sal) max from emp;
+--------+---------+
| least | max |
+--------+---------+
| 800.00 | 5000.00 |
+--------+---------+
1 row in set (0.00 sec)
mysql> select deptno , MIN(sal) "MINIMUM SALARY" from emp group by (deptno);
+--------+----------------+
| deptno | MINIMUM SALARY |
+--------+----------------+
| 10 | 1300.00 |
| 20 | 800.00 |
| 30 | 950.00 |
+--------+----------------+
3 rows in set (0.00 sec)
mysql> select SUM(sal) totalsal from emp;
+----------+
| totalsal |
+----------+
| 29025.00 |
+----------+
1 row in set (0.00 sec)
mysql> select deptno , SUM(sal) "sal sum" from emp group by (deptno);
+--------+----------+
| deptno | sal sum |
+--------+----------+
| 10 | 8750.00mysql> select * from t1;
+-----+-------+

6. | Rno | Name |
+-----+-------+
| 1 | amit |
| 2 | rohan |
| 3 | rahul |
| 4 | Nayan |
| 5 | pati |
+-----+-------+
5 rows in set (0.00 sec)
mysql> select * from t2;
+-----+-------+
| Rno | Name |
+-----+-------+
| 3 | rahul |
| 4 | Nayan |
| 5 | pati |
| 6 | xyz |
| 7 | pqr |
+-----+-------+
5 rows in set (0.00 sec)
|
| 20 | 10875.00 |
| 30 | 9400.00 |
+--------+----------+
3 rows in set (0.00 sec)
mysql> select deptno , avg(sal) "sal avg" from emp group by (deptno);
+--------+-------------+
| deptno | sal avg |
+--------+-------------+
| 10 | 2916.666667 |
| 20 | 2175.000000 |
| 30 | 1566.666667 |
+--------+-------------+
3 rows in set (0.00 sec)
mysql> select * from emp where job in('CLERK','PRESIDENT');
+-------+--------+-----------+------+------------+---------+------+--------+
| empno | ename | job | mgr | hiredate | sal | comm | deptno |
+-------+--------+-----------+------+------------+---------+------+--------+
| 7369 | SMITH | CLERK | 7902 | 1980-12-17 | 800.00 | NULL | 20 |
| 7839 | KING | PRESIDENT | NULL | 1981-11-17 | 5000.00 | NULL | 10 |
| 7876 | ADAMS | CLERK | 7788 | 1983-01-12 | 1100.00 | NULL | 20 |
| 7900 | JAMES | CLERK | 7698 | 1981-12-03 | 950.00 | NULL | 30 |
| 7934 | MILLER | CLERK | 7782 | 1982-01-23 | 1300.00 | NULL | 10 |
+-------+--------+-----------+------+------------+---------+------+--------+
5 rows in set (0.00 sec)
mysql> select * from emp where job not in('CLERK','PRESIDENT');
+-------+--------+----------+------+------------+---------+---------+--------+
| empno | ename | job | mgr | hiredate | sal | comm | deptno |
+-------+--------+----------+------+------------+---------+---------+--------+
| 7499 | ALLEN | SALESMAN | 7698 | 1981-02-20 | 1600.00 | 300.00 | 30 |
| 7521 | WARD | SALESMAN | 7698 | 1981-02-22 | 1250.00 | 500.00 | 30 |
| 7566 | JONES | MANAGER | 7839 | 1981-04-02 | 2975.00 | NULL | 20 |
| 7654 | MARTIN | SALESMAN | 7698 | 1981-09-28 | 1250.00 | 1400.00 | 30 |
| 7698 | BLAKE | MANAGER | 7839 | 1981-05-01 | 2850.00 | NULL | 30 |
| 7782 | CLARK | MANAGER | 7839 | 1981-06-09 | 2450.00 | NULL | 10 |
| 7788 | SCOTT | ANALYST | 7566 | 1982-12-09 | 3000.00 | NULL | 20 |
| 7844 | TURNER | SALESMAN | 7698 | 1981-09-08 | 1500.00 | 0.00 | 30 |
| 7902 | FORD | ANALYST | 7566 | 1981-12-03 | 3000.00 | NULL | 20 |
+-------+--------+----------+------+------------+---------+---------+--------+

7. 9 rows in set (0.00 sec)
mysql> select * fromysql> select * from t1;
+-----+-------+
| Rno | Name |
+-----+-------+
| 1 | amit |
| 2 | rohan |
| 3 | rahul |
| 4 | Nayan |
| 5 | pati |
+-----+-------+
5 rows in set (0.00 sec)
mysql> select * from t2;
+-----+-------+
| Rno | Name |
+-----+-------+
| 3 | rahul |
| 4 | Nayan |
| 5 | pati |
| 6 | xyz |
| 7 | pqr |
+-----+-------+
5 rows in set (0.00 sec)
m emp order by comm;
+-------+--------+-----------+------+------------+---------+---------+--------+
| empno | ename | job | mgr | hiredate | sal | comm | deptno |
+-------+--------+-----------+------+------------+---------+---------+--------+
| 7369 | SMITH | CLERK | 7902 | 1980-12-17 | 800.00 | NULL | 20 |
| 7902 | FORD | ANALYST | 7566 | 1981-12-03 | 3000.00 | NULL | 20 |
| 7900 | JAMES | CLERK | 7698 | 1981-12-03 | 950.00 | NULL | 30 |
| 7876 | ADAMS | CLERK | 7788 | 1983-01-12 | 1100.00 | NULL | 20 |
| 7839 | KING | PRESIDENT | NULL | 1981-11-17 | 5000.00 | NULL | 10 |
| 7788 | SCOTT | ANALYST | 7566 | 1982-12-09 | 3000.00 | NULL | 20 |
| 7782 | CLARK |
mysql> select * from t1;
+-----+-------+
| Rno | Name |
+-----+-------+
| 1 | amit |
| 2 | rohan |
| 3 | rahul |
| 4 | Nayan |
| 5 | pati |
+-----+-------+
5 rows in set (0.00 sec)
mysql> select * from t2;
+-----+-------+
| Rno | Name |
+-----+-------+
| Rno | Name |
+-----+-------+
| 1 | amit |
| 2 | rohan |
| 3 | rahul |
| 4 | Nayan |
| 5 | pati |
+-----+-------+
5 rows in set (0.00 sec)
mysql> select * from t2;

8. +-----+-------+
| Rno | Name |
+-----+-------+
| 3 | rahul |
| 4 | Nayan |
| 5 | pati |
| 6 | xyz |
| 7 | pqr |
+-----+-------+
5 rows in set (0.00 sec)
+-----+-------+
| 3 | rahul |
| 4 | Nayan |
| 5 | pati |
| 6 | xyz |
| 7 | pqr |
+-----+-------+
5 rows in set (0.00 sec)
MANAGER | 7839 | 1981-06-09 | 2450.00 | NULL | 10 |
| 7698 | BLAKE | MANAGER | 7839 | 1981-05-01 | 2850.00 | NULL | 30 |
| 7566 | JONES | MANAGER | 7839 | 1981-04-02 | 2975.00 | NULL | 20 |
| 7934 | MILLER | CLERK | 7782 | 1982-01-23 | 1300.00 | NULL | 10 |
| 7844 | TURNER | SALESMAN | 7698 | 1981-09-08 | 1500.00 | 0.00 | 30 |
| 7499 | ALLEN | SALESMAN | 7698 | 1981-02-20 | 1600.00 | 300.00 | 30 |
| 7521 | WARD | SALESMAN | 7698 | 1981-02-22 | 1250.00 | 500.00 | 30 |
| 7654 | MARTIN | SALESMAN | 7698 | 1981-09-28 | 1250.00 | 1400.00 | 30 |
+-------+--------+-
mysql> select * from t1;
+-----+-------+
| Rno | Name |
+-----+-------+
| 1 | amit |
| 2 | rohan |
| 3 | rahul |
| 4 | Nayan |
mysql> select * from t1;
+-----+-------+
| Rno | Name |
+-----+-------+
| 1 | amit |
| 2 | rohan |
| 3 | rahul |
| 4 | Nayan |
| 5 | pati |
+-----+-------+
5 rows in set (0.00 sec)
mysql> select * from t2;
+-----+-------+
| Rno | Name |
+-----+-------+
| 3 | rahul |
| 4 | Nayan |
| 5 | pati |
| 6 | xyz |
| 7 | pqr |
+-----+-------+
5 rows in set (0.00 sec)
| 5 | pati |
+-----+-------+

9. 5 rows in set (0.00 sec)
mysql> select * from t2;
+-----+-------+mysql> select * from t1;
+-----+-------+
| Rno | Name |
+-----+-------+
| 1 | amit |
| 2 | rohan |
| 3 | rahul |
| 4 | Nayan |
| 5 | pati |
+-----+-------+
5 rows in set (0.00 sec)
mysql> select * from t2;
+-----+-------+
| Rno | Name |
+-----+-------+
| 3 | rahul |
| 4 | Nayan |
| 5 | pati |
| 6 | xyz |
| 7 | pqr |
+-----+-------+
5 rows in set (0.00 sec)
| Rno | Name |
+-----+-------+
| 3 | rahul |
| 4 | Nayan |
| 5 | pati |
| 6 | xyz |
| 7 | pqr |
+-----+-------+
5 rows in set (0.00 sec)
----------+------+------------+---------+---------+--------+
14 rows in set (0.00 sec)
mysql> select * from emp where comm <> 'NULL';
+-------+--------+----------+------+------------+---------+---------+--------+
| empno | ename | job | mgr | hiredate | sal | comm | deptno |
+-------+--------+----------+------+------------+---------+---------+--------+
| 7499 | ALLEN | SALESMAN | 7698 | 1981-02-20 | 1600.00 | 300.00 | 30 |
| 7521 | WARD | SALESMAN | 7698 | 1981-02-22 | 1250.00 | 500.00 | 30 |
| 7654 | MARTIN | SALESMAN | 7698 | 1981-09-28 | 1250.00 | 1400.00 | 30 |
+-------+--------+----------+------+------------+---------+---------+--------+
3 rows in set, 1 warning (0.00 sec)
mysql> select * from emp where comm <> 'NULL' order by comm desc;
+-------+--------+----------+------+------------+---------+---------+--------+
| empno | ename | job | mgr | hiredate | sal | comm | deptno |
+-------+--------+----------+------+------------+---------+---------+--------+
| 7654 | MARTIN | mysql> select * from t1;
+-----+-------+
| Rno | Name |
+-----+-------+
| 1 | amit |
| 2 | rohan |
| 3 | rahul |
| 4 | Nayan |
| 5 | pati |
+-----+-------+
5 rows in set (0.00 sec)

10. mysql> select * from t2;
+-----+-------+
| Rno | Name |
+-----+-------+
| 3 | rahul |
| 4 | Nayan |
| 5 | pati |
| 6 | xyz |
| 7 | pqr |
+-----+-------+
5 rows in set (0.00mysql> select * from t1;
+-----+-------+
| Rno | Name |
+-----+-------+
| 1 | amit |
| 2 | rohan |
| 3 | rahul |
| 4 | Nayan |
| 5 | pati |
+-----+-------+
5 rows in set (0.00 sec)
mysql> select * from t2;
+-----+-------+
| Rno | Name |
+-----+-------+
| 3 | rahul |
| 4 | Nayan |
| 5 | pati |
| 6 | xyz |
| 7 | pqr |
+-----+-------+
5 rows in set (0.00 sec)
sec)
SALESMAN | 7698 | 1981-09-28 | 1250.00 | 1400.00 | 30 |
| 7521 | WARD | SALESMAN | 7698 | 1981-02-22 | 1250.00 | 500.00 | 30 |
| 7499 | ALLEN | SALESMAN | 7698 | 1981-02-20 | 1600.00 | 300.00 | 30 |
+-------+--------+----------+------+------------+---------+---------+--------+
3 rows in set, 1 warning (0.00 sec)
mysql> select ename, sal from emp where sal between 1000 and 5000;
+--------+---------+mysql> select ename, sal from emp where sal between 1000 and
5000;
+--------+---------+
| ename | sal |
+--------+---------+
| ALLEN | 1600.00 |
| WARD | 1250.00
mysql> select * from t1;
+-----+-------+
| Rno | Name |
+-----+-------+
| 1 | amit |
| 2 | rohan |
| 3 | rahul |
| 4 | Nayan |
| 5 | pati |
+-----+-------+
5 rows in set (0.00 sec)
mysql> select * from t2;
+-----+-------+

11. | Rno | Name |
+-----+-------+
| 3 | rahul |
| 4 | Nayan |
| 5 | pati |
| 6 | xyz |
| 7 | pqr |
+-----+-------+
5 rows in set (0.00 sec)
|
| JONES | 2975.00 |
| MARTIN | 1250.00 mysql> select * from t1;
+-----+-------+
| Rno | Name |
+-----+-------+
| 1 | amit |
| 2 | rohan |
| 3 | rahul |
| 4 | Nayan |
| 5 | pati |
+-----+-------+
5 rows in set (0.00 sec)
mysql> select * from t2;
+-----+-------+
| Rno | Name |
+-----+-------+
| 3 | rahul |
| 4 | Nayan |
| 5 | pati |
mysql> select * from t1;
+-----+-------+
| Rno | Name |
+-----+-------+
| 1 | amit |
| 2 | rohan |
| 3 | rahul |
| 4 | Nayan |
| 5 | pati |
+-----+-------+
5 rows in set (0.00 sec)
mysql> select * from t2;
+-----+-------+
| Rno | Name |
+-----+-------+
| 3 | rahul |
| 4 | Nayan |
| 5 | pati |
| 6 | xyz |
| 7 | pqr |
+-----+-------+
5 rows in set (0.00 sec)
| 6 | xyz |
| 7 | pqr |
+-----+-------+
5 rows in set (0.00 sec)
|
| BLAKE | 2850.00 |
| CLARK | 2450.00 |
| SCOTT | 3000.00 |
| KING | 5000.00 |

12. | TURNER | 1500.00 |
| ADAMS | 1100.00 |
| FORD | 3000.00 |
| MILLER | 1300.00 |
+--------+---------+
12 rows in set (0.00 sec)
| ename | sal |
+--------+---------+
| ALLEN | 1600.00 |
| WARD | 1250.00 |
| JONES | 2975.00 |
| MARTIN | 1250.00 |
| BLAKE | 2850.00 |
| CLARK | 2450.00 |
| SCOTT | 3000.00 |
| KING | 5000.00 |
| TURNER | 1500.00 |
| ADAMS | 1100.00 |
| FORD | 3000.00 |
| MILLER | 1300.00 |
+--------+---------+
12 rows in set (0.00 sec)
mysql> select empno,ename,job,comm,sal from emp where sal>=1000 and sal<=3000;
+-------+--------+----------+---------+---------+
| empno | ename | job | comm | sal |
+-------+--------+----------+---------+---------+
| 7499 | ALLEN | SALESMAN | 300.00 | 1600.00 |
| 7521 | WARD | SALESMAN | 500.00 | 1250.00 |
| 7566 | JONES | MANAGER | NULL | 2975.00 |
| 7654 | MARTIN | SALESMAN | 1400.00 | 1250.00 |
| 7698 | BLAKE | MANAGER | NULL | 2850.00 |
| 7782 | CLARK | MANAGER | NULL | 2450.00 |
| 7788 | SCOTT | ANALYST | NULL | 3000.00 |
| 7844 | TURNER | SALESMAN | 0.00 | 1500.00 |
| 7876 | ADAMS | CLERK | NULL | 1100.00 |
| 7902 | FORD | ANALYST | NULL | 3000.00 |
| 7934 | MILLER | CLERK | NULL | 1300.00 |
+-------+--------+----------+---------+---------+
11 rows in set (0.00 sec)
mysql> select empno,ename,job,comm,sal from emp where sal>=1000 or sal<=3000;
+-------+--------+-----------+---------+---------+
| empno | ename | job | comm | sal |
+-------+--------+-----------+---------+---------+
| 7369 | SMITH | CLERK | NULL | 800.00 |
| 7499 | ALLEN | SALESMAN | 300.00 | 1600.00 |
| 7521 | WARD | SALESMAN | 500.00 | 1250.00 |
| 7566 | JONES | MANAGER | NULL | 2975.00 |
| 7654 | MARTIN | SALESMAN | 1400.00 | 1250.00 |
| 7698 | BLAKE | MANAGER | NULL | 2850.00 |
| 7782 | CLARK | MANAGER | NULL | 2450.00 |
| 7788 | SCOTT | ANALYST | NULL | 3000.00 |
| 7839 | KING | PRESIDENT | NULL | 5000.00 |
| 7844 | TURNER | SALESMAN | 0.00 | 1500.00 |
| 7876 | ADAMS | CLERK | NULL | 1100.00 |
| 7900 | JAMES | CLERK | NULL | 950.00 |
| 7902 | FORD | ANALYST | NULL | 3000.00 |

13. | 7934 | MILLER | CLERK | NULL | 1300.00 |
+-------+--------+-----------+---------+---------+
14 rows in set (0.00 sec)
mysql> select empno,ename,job,comm,sal from emp where not sal=3000;
+-------+--------+-----------+---------+---------+
| empno | ename | job | comm | sal |
+-------+--------+-----------+---------+---------+
| 7369 | SMITH | CLERK | NULL | 800.00 |
| 7499 | ALLEN | SALESMAN | 300.00 | 1600.00 |
| 7521 | WARD | SALESMAN | 500.00 | 1250.00 |
| 7566 | JONES | MANAGER | NULL | 2975.00 |
| 7654 | MARTIN | SALESMAN | 1400.00 | 1250.00 |
| 7698 | BLAKE | MANAGER | NULL | 2850.00 |
| 7782 | CLARK | MANAGER | NULL | 2450.00 |
| 7839 | KING | PRESIDENT | NULL | 5000.00 |
| 7844 | TURNER | SALESMAN | 0.00 | 1500.00 |
| 7876 | ADAMS | CLERK | NULL | 1100.00 |
| 7900 | JAMES | CLERK | NULL | 950.00 |
| 7934 | MILLER | CLERK | NULL | 1300.00 |
+-------+--------+-----------+---------+---------+
12 rows in set (0.00 sec)
mysql> update emp set comm=520 where empno=7369;
Query OK, 1 row affected (0.37 sec)
Rows matched: 1 Changed: 1 Warnings: 0
mysql> select * from emp;
+-------+--------+-----------+------+------------+---------+---------+--------+
| empno | ename | job | mgr | hiredate | sal | comm | deptno |
+-------+--------+-----------+------+------------+---------+---------+--------+
| 7369 | SMITH | CLERK | 7902 | 1980-12-17 | 800.00 | 520.00 | 20 |
| 7499 | ALLEN | SALESMAN | 7698 | 1981-02-20 | 1600.00 | 300.00 | 30 |
| 7521 | WARD | SALESMAN | 7698 | 1981-02-22 | 1250.00 | 500.00 | 30 |
| 7566 | JONES | MANAGER | 7839 | 1981-04-02 | 2975.00 | NULL | 20 |
| 7654 | MARTIN | SALESMAN | 7698 | 1981-09-28 | 1250.00 | 1400.00 | 30 |
| 7698 | BLAKE | MANAGER | 7839 | 1981-05-01 | 2850.00 | NULL | 30 |
| 7782 | CLARK | MANAGER | 7839 | 1981-06-09 | 2450.00 | NULL | 10 |
| 7788 | SCOTT | ANALYST | 7566 | 1982-12-09 | 3000.00 | NULL | 20 |
| 7839 | KING | PRESIDENT | NULL | 1981-11-17 | 5000.00 | NULL | 10 |
| 7844 | TURNER | SALESMAN | 7698 | 1981-09-08 | 1500.00 | 0.00 | 30 |
| 7876 | ADAMS | CLERK | 7788 | 1983-01-12 | 1100.00 | NULL | 20 |
| 7900 | JAMES | CLERK | 7698 | 1981-12-03 | 950.00 | NULL | 30 |
| 7902 | FORD | ANALYST | 7566 | 1981-12-03 | 3000.00 | NULL | 20 |
| 7934 | MILLER | CLERK | 7782 | 1982-01-23 | 1300.00 | NULL | 10 |
+-------+--------+-----------+------+------------+---------+---------+--------+
14 rows in set (0.00 sec)
mysql> delete from emp where empno=7369;
Query OK, 1 row affected (0.01 sec)
mysql> select * from emp;
+-------+--------+-----------+------+------------+---------+---------+--------+
| empno | ename | job | mgr | hiredate | sal | comm | deptno |
+-------+--------+-----------+------+------------+---------+---------+--------+
| 7499 | ALLEN | SALESMAN | 7698 | 1981-02-20 | 1600.00 | 300.00 | 30 |
| 7521 | WARD | SALESMAN | 7698 | 1981-02-22 | 1250.00 | 500.00 | 30 |
| 7566 | JONES | MANAGER | 7839 | 1981-04-02 | 2975.00 | NULL | 20 |
| 7654 | MARTIN | SALESMAN | 7698 | 1981-09-28 | 1250.00 | 1400.00 | 30 |
| 7698 | BLAKE | MANAGER | 7839 | 1981-05-01 | 2850.00 | NULL | 30 |
| 7782 | CLARK | MANAGER | 7839 | 1981-06-09 | 2450.00 | NULL | 10 |
| 7788 | SCOTT | ANALYST | 7566 | 1982-12-09 | 3000.00 | NULL | 20 |
| 7839 | KING | PRESIDENT | NULL | 1981-11-17 | 5000.00 | NULL | 10 |

14. | 7844 | TURNER | SALESMAN | 7698 | 1981-09-08 | 1500.00 | 0.00 | 30 |
| 7876 | ADAMS | CLERK | 7788 | 1983-01-12 | 1100.00 | NULL | 20 |
| 7900 | JAMES | CLERK | 7698 | 1981-12-03 | 950.00 | NULL | 30 |
| 7902 | FORD | ANALYST | 7566 | 1981-12-03 | 3000.00 | NULL | 20 |
| 7934 | MILLER | CLERK | 7782 | 1982-01-23 | 1300.00 | NULL | 10 |
+-------+--------+-----------+------+------------+---------+---------+--------+
13 rows in set (0.00 sec)
________________________________________________________________________________
_______
mysql> select * from t1;
+-----+-------+
| Rno | Name |
+-----+-------+
| 1 | amit |
| 2 | rohan |
| 3 | rahul |
| 4 | Nayan |
| 5 | pati |
+-----+-------+
5 rows in set (0.00 sec)
mysql> select * from t2;
+-----+-------+
| Rno | Name |
+-----+-------+
| 3 | rahul |
| 4 | Nayan |
| 5 | pati |
| 6 | xyz |
| 7 | pqr |
+-----+-------+
5 rows in set (0.00 sec)
mysql> select * from t1 union select * from t2;
+-----+-------+
| Rno | Name |
+-----+-------+
| 1 | amit |
| 2 | rohan |
| 3 | rahul |
| 4 | Nayan |
| 5 | pati |
| 6 | xyz |
| 7 | pqr |
+-----+-------+
7 rows in set (0.00 sec)
mysql> select distinct(Rno) as "Common RollNo" from t1 inner join t2
using(Rno);
+---------------+
| Common RollNo |
+---------------+
| 3 |
| 4 |
| 5 |
+---------------+
3 rows in set (0.00 sec)