SQL Exercises, Practice, Solution - UNION
SQL UNION [9 exercises with solution]
[An editor is available at the bottom of the page to write and execute the scripts.]
1. Write a query to display all salesmen and customer located in London. Go to the editor
Sample table: Salesman
Sample table: Customer
2. Write a query to display distinct salesman and their cities. Go to the editor
Sample table: Salesman
Sample table: Customer
3. Write a query to display all the salesmen and customer involved in this inventory management system. Go to the editor
Sample table: orders
Sample table: customer
4. Write a query to make a report of which salesman produce the largest and smallest orders on each date. Go to the editor
Sample table: Salesman
Sample table: Orders
5. Write a query to make a report of which salesman produce the largest and smallest orders on each date and arranged the orders number in smallest to the largest number. Go to the editor
Sample table: Salesman
Sample table: Orders
6. Write a query to list all the salesmen, and indicate those who do not have customers in their cities, as well as whose who do. Go to the editor
Sample table: Salesman
Sample table: Customer
7. Write a query to that appends strings to the selected fields, indicating whether or not a specified salesman was matched to a customer in his city. Go to the editor
Sample table: Salesman
Sample table: Customer
8. Create a union of two queries that shows the names, cities, and ratings of all customers. Those with a rating of 200 or greater will also have the words "High Rating", while the others will have the words "Low Rating".
Sample table: Customer
9. Write a command that produces the name and number of each salesman and each customer with more than one current order. Put the results in alphabetical order.
Sample table: Customer
Sample table: salesman
Sample table: orders
More to Come !
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