mysql union code example
Example 1: mysql union
SELECT supplier_id, supplier_name
FROM suppliers
WHERE supplier_id <= 500
UNION
SELECT company_id, company_name
FROM companies
WHERE company_name = 'Apple'
ORDER BY 2;
Example 2: sql union
Combines the results from 2 or more SELECT statements and returns only
distinct values.
Example: Returns the cities from the events and subscribers tables.
SELECT city FROM events
UNION
SELECT city from subscribers;
Example 3: union all in mysql
SELECT City FROM Customers
UNION ALL
SELECT City FROM Suppliers
ORDER BY City;