Question

Suppose I have two table USER and MESSAGE

USER -  id,name
MESSAGES - id,message_from,message_to,message_message

So inorder to join I use this co

SELECT m.*,u1.*,u2.* FROM MESSAGES m
    INNER JOIN USER as u1
       ON(m.message_from = u1.id)  
    INNER JOIN USER as u2
       ON(m.message_to = u2.id)

So now when i print_r out the result in codeigniter it doesn’t have the user data for the user message_to.

And I guess even if it return data for both user then it should have some prefixes to differentiate

So how should I do that ?

Thanks and Regards

Answer 1

It is best to avoid using SELECT * syntax.

I would suggest you specify the columns you want back and give those columns whose names are not unique an alias.

SELECT m.id AS MessageId,m.message_from,m.message_to,m.message_message,
    u1.id AS FromId, u1.name AS FromName,
    u2.id AS ToId,u2.name AS ToName FROM MESSAGES m
INNER JOIN USER as u1 ON(m.message_from = u1.id)  
INNER JOIN USER as u2 ON(m.message_to = u2.id)