LEFT JOIN two tables with the same column name and print them with PHP

Question

I have two table in my MySQL database:

USERS ('id_user' - 'id_client' -> the same as the id in CLIENTS)
CLIENTS ('id_client' - 'name' etc.)

I want to print all the clients and the respective users. This is my query:

SELECT * FROM clients AS c LEFT JOIN users AS u ON c.id_client = u.id_client

It seems to be ok, but I am having trouble when I try to print the the id_client from the table clients . How can I print them using PHP? It seems they are empty... Is my query wrong?

Answer 1

Try,

Either GROUP BY or DISTINCT is needed

    SELECT * FROM clients AS c LEFT JOIN users AS u ON c.id_client = u.id_client GROUP BY c.id_client

Answer 2

Simpler than that, just do the following:

SELECT c.*, u.name FROM clients AS c LEFT JOIN users AS u ON c.id_client = u.id_client

This will select everything from table c, and only name from table u. The issue you are having is you are selecting id_client from both tables, which is not necessary, and causes confusion when trying to reference it with php.

Answer 3

SELECT c. ,u. FROM clients c LEFT outer JOIN users u ON c.id_client = u.id_client

Answer 4

Since you have field with the same name in both tables ("id_client"), you have to specify which one to be printed.

Like so:

SELECT u.id_client, c.id_client, ... FROM clients AS c LEFT JOIN users AS u ON c.id_client = u.id_client