Python_Content/MySQL-Commands.txt at master · anshusoni1803/Python_Content · GitHub

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mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| test               |
+--------------------+
4 rows in set (0.00 sec)

mysql> create database empDB;
Query OK, 1 row affected (0.00 sec)

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| empDB              |
| test               |
+--------------------+
5 rows in set (0.00 sec)

mysql> use empDB;
Database changed
mysql> show tables;
Empty set (0.00 sec)

mysql> CREATE TABLE emp(empId INT PRIMARY KEY auto_increment, name VARCHAR(50), salary FLOAT(13,4));
Query OK, 0 rows affected (0.40 sec)

mysql> show tables;
+-----------------+
| Tables_in_empDB |
+-----------------+
| emp             |
+-----------------+
1 row in set (0.00 sec)

mysql> INSERT INTO emp(name,salary) VALUES('Akram', 256000.50);
Query OK, 1 row affected (0.36 sec)

mysql> INSERT INTO emp(name,salary) VALUES('Amit', 200000.50);
Query OK, 1 row affected (0.09 sec)

mysql> INSERT INTO emp(name,salary) VALUES('Rajeev', 250000.50);
Query OK, 1 row affected (0.07 sec)

mysql> SELECT * FROM  EMP;
+-------+--------+-------------+
| empId | name   | salary      |
+-------+--------+-------------+
|     1 | Akram  | 256000.5000 |
|     2 | Amit   | 200000.5000 |
|     3 | Rajeev | 250000.5000 |
+-------+--------+-------------+
3 rows in set (0.00 sec)

mysql> SELECT empId, name FROM  EMP;
+-------+--------+
| empId | name   |
+-------+--------+
|     1 | Akram |
|     2 | Amit   |
|     3 | Rajeev |
+-------+--------+
3 rows in set (0.00 sec)

mysql> SELECT count(*) FROM  EMP;
+----------+
| count(*) |
+----------+
|        3 |
+----------+
1 row in set (0.00 sec)

mysql> SELECT * FROM  EMP WHERE empId = 2;
+-------+------+-------------+
| empId | name | salary      |
+-------+------+-------------+
|     2 | Amit | 200000.5000 |
+-------+------+-------------+
1 row in set (0.00 sec)

mysql> SELECT * FROM EMP WHERE empId = 2 OR empId = 3;
+-------+--------+-------------+
| empId | name   | salary      |
+-------+--------+-------------+
|     2 | Amit   | 200000.5000 |
|     3 | Rajeev | 250000.5000 |
+-------+--------+-------------+
2 rows in set (0.00 sec)

mysql> SELECT * FROM EMP WHERE empId IN(2,3);
+-------+--------+-------------+
| empId | name   | salary      |
+-------+--------+-------------+
|     2 | Amit   | 200000.5000 |
|     3 | Rajeev | 250000.5000 |
+-------+--------+-------------+
2 rows in set (0.00 sec)

mysql> SELECT * FROM  EMP WHERE empId NOT IN(2,3);
+-------+--------+-------------+
| empId | name   | salary      |
+-------+--------+-------------+
|     1 | Akram  | 256000.5000 |
+-------+--------+-------------+
1 row in set (0.00 sec)

mysql> SELECT * FROM  EMP WHERE name='Akram';
+-------+--------+-------------+
| empid | name   | salary      |
+-------+--------+-------------+
|     1 | Akram  | 256000.5000 |
+-------+--------+-------------+
1 row in set (0.00 sec)

mysql> SELECT * FROM  EMP WHERE name LIKE '%r%';
+-------+--------+-------------+
| empId | name   | salary      |
+-------+--------+-------------+
|     1 | Akram  | 256000.5000 |
|     3 | Rajeev | 250000.5000 |
+-------+--------+-------------+
2 rows in set (0.00 sec)

mysql> SELECT * FROM  EMP WHERE name LIKE 'r%';
+-------+--------+-------------+
| empId | name   | salary      |
+-------+--------+-------------+
|     3 | Rajeev | 250000.5000 |
+-------+--------+-------------+
1 row in set (0.00 sec)

mysql> SELECT * FROM  EMP WHERE name LIKE '%m';
+-------+--------+-------------+
| empId | name   | salary      |
+-------+--------+-------------+
|     1 | Akram  | 256000.5000 |
+-------+--------+-------------+
1 row in set (0.00 sec)

mysql> SELECT * FROM  EMP WHERE name LIKE '_a%';
+-------+--------+-------------+
| empId | name   | salary      |
+-------+--------+-------------+
|     3 | Rajeev | 250000.5000 |
+-------+--------+-------------+
1 row in set (0.00 sec)

mysql> SELECT count(*) FROM  EMP WHERE name LIKE '_a%';
+----------+
| count(*) |
+----------+
|        1 |
+----------+
1 row in set (0.00 sec)

mysql> SELECT count(*) FROM  EMP WHERE name LIKE '%r%';
+----------+
| count(*) |
+----------+
|        2 |
+----------+
1 row in set (0.00 sec)

mysql> UPDATE EMP SET salary = 24000 WHERE empId = 3;
1 row in set (0.00 sec)

mysql> DELETE FROM emp WHERE empId = 2;
1 row in set (0.00 sec)