SQL-retrieve data from tables

1. Write a SQL statement to display all the information of all salesmen.
   SELECT * FROM salesman;
2. Write a SQL statement to display a string “This is SQL Exercise, Practice and Solution”.
   SELECT 'This is SQL Exercise, Practice and Solution;'
3. Write a query to display three numbers in three columns.
   SELECT 2, 3, 4;
4. Write a query to display the sum of two numbers 10 and 15 from RDMS sever.
   SELECT 10+15;
5. Write a query to display the result of an arithmetic expression.
   SELECT 2*3;
6. Write a SQL statement to display specific columns like name and commission for all the salesmen.

   SELECT name, commission
   FROM salesman;
   

7. Write a query to display the columns in a specific order like order date, salesman id, order number and purchase amount from for all the orders.

   SELECT ord_date, salesman_id, ord_no, purch_amt
   FROM orders;
   

8. Write a query which will retrieve the value of salesman id of all salesmen, getting orders from the customers in orders table without any repeats.

   SELECT DISTINCT salesman_id
   FROM orders;
   

9. Write a SQL statement to display names and city of salesman, who belongs to the city of Paris.

   SELECT name, city
   FROM salesman
   WHERE city='Paris';
   

10. Write a SQL statement to display all the information for those customers with a grade of 200.

    SELECT *
    FROM