Writing query for multiple tables in php

Question

I am writing my last query for my homework, but I am stuck on it right now. This query requires me to take information from 2 tables instead of 1. I am confused on how to ge

Answer 1

As mentionned in the above comment, you have to do an SQL (inner) join in this case. So you'll have something like:

SELECT name, indep_year, region 
FROM lab2.country 
JOIN lab2.country_language
ON lab2.country.country_code = lab2.country_language.country_code
WHERE …

Answer 2

A good starting point would be the PostgreSQL tutorial, in particular, joins between tables.

You must perform an inner join between the two tables to link them together into a bigger virtual row that you can then filter and select individual columns from.

The tutorial provides better examples than I can.