MySQL Understanding Basic Joins

Question

I am struggling to understand basic MySQL joins.

Basically I\'ve got 2 tables one with a customer first name and address id in it and another with the actual address.

Answer 1

Your condition is inner join, This is the simplest, most understood Join and is the most common. This query will return all of the records in the left table (Customer) that have a matching record in the right table (address). This Join is written as follows:

 SELECT firstName, address FROM Customer 
 INNER JOIN address ON Customer.addressId=address.addressId

SQL_LIVE_DEMO

Sample Output :

FIRSTNAME       ADDRESS
  Bob       45 Somewhere street