SQL Exercises, Practice, Solution - Using Boolean and Relational operators

SQL [12 exercises with solution]

1. From the following table, write a SQL query to locate the details of customers with grade values above 100. Return customer_id, cust_name, city, grade, and salesman_id.   Go to the editor

Sample table: customer

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2. From the following table, write a SQL query to find all the customers in ‘New York’ city who have a grade value above 100. Return customer_id, cust_name, city, grade, and salesman_id.    Go to the editor

Sample table: customer

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3. From the following table, write a SQL query to find customers who are from the city of New York or have a grade of over 100. Return customer_id, cust_name, city, grade, and salesman_id.    Go to the editor

Sample table: customer

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4. From the following table, write a SQL query to find customers who are either from the city 'New York' or who do not have a grade greater than 100. Return customer_id, cust_name, city, grade, and salesman_id.    Go to the editor

Sample table: customer

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5. From the following table, write a SQL query to identify customers who do not belong to the city of 'New York' or have a grade value that exceeds 100. Return customer_id, cust_name, city, grade, and salesman_id.    Go to the editor

Sample table: customer

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6. From the following table, write a SQL query to find details of all orders excluding those with ord_date equal to '2012-09-10' and salesman_id higher than 5005 or purch_amt greater than 1000.Return ord_no, purch_amt, ord_date, customer_id and salesman_id.   Go to the editor

Sample table : orders

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7. From the following table, write a SQL query to find the details of those salespeople whose commissions range from 0.10 to0.12. Return salesman_id, name, city, and commission.  Go to the editor

Sample table : salesman

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8. From the following table, write a SQL query to find details of all orders with a purchase amount less than 200 or exclude orders with an order date greater than or equal to '2012-02-10' and a customer ID less than 3009. Return ord_no, purch_amt, ord_date, customer_id and salesman_id. Go to the editor

Sample table : orders

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9. From the following table, write a SQL query to find all orders that meet the following conditions. Exclude combinations of order date equal to '2012-08-17' or customer ID greater than 3005 and purchase amount less than 1000.  Go to the editor

Sample table : orders

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10. Write a SQL query that displays order number, purchase amount, and the achieved and unachieved percentage (%) for those orders that exceed 50% of the target value of 6000.   Go to the editor

Sample table: orders

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11. From the following table, write a SQL query to find the details of all employees whose last name is ‘Dosni’ or ‘Mardy’. Return emp_idno, emp_fname, emp_lname, and emp_dept.    Go to the editor

Sample table : emp_details

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12. From the following table, write a SQL query to find the employees who work at depart 47 or 63. Return emp_idno, emp_fname, emp_lname, and emp_dept.    Go to the editor

Sample table : emp_details

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Query visualizations are generated using Postgres Explain Visualizer (pev).

Do not submit any solution of the above exercises at here, if you want to contribute go to the appropriate exercise page.