MySQL Inner Join Query To Get Records Not Present in Other Table

Question

I have table 1, all_countries, as follows-

id   |  country
------------------
1    |  USA
2    |  China
3    |  India
4    |  France
5    |  UK
6    |  Australia         


        

Answer 1

While @Joachim Isaksson gave me the clue, I tested this very similar query and worked on my database by replacing variables.

SELECT * FROM all_countries 
LEFT JOIN supported_countries ON all_countries.id = supported_countries.id 
WHERE supported_countries.id IS NULL

I gave the question and that Joachim's answer my thumbs up. Cheers !