MySQL Joining Tables

Question

I have a MySQL table that contains two user id's, each of a
different user. I want to make a query that joins that table with
the user table to fetch the usernames corresponding to both user
id's. How can this be done?

Answer 1

"AngryCloud" <[email protected]> wrote in
message
news:fgg691$1jt$[email protected]..
> Sorry, I don't think I explained my question that well.
Let me rephrase:
>
> I have a MySQL table that contains two user id's, each
of a different
> user.
> Each of the id's is in a different column. I want to
make a query that
> joins
> that table with the user table to fetch the usernames
corresponding to
> both
> user id's.
>
> Lets say I have a table called Messages. A record in the
tables shows the
> Recipient ID is '26' and the Sender ID is '14'. I want
to create a query
> that
> joins that Messages table with the User Data table to
get the Usernames of
> each
> of those users.
>
> Just for possible further understand, let me show you an
example query
> that
> does not make sense, but it might help in describing
what I am trying to
> achieve.
>
> "SELECT messages.recipient_id, messages.sender_id,
messages.message,
> user_data.username
> FROM messages
> LEFT JOIN user_data ON messages.recipient_id =
user_data.id
> LEFT JOIN user_data ON messages.sender_id =
user_data.id"
actually this does make sense but you need to apply aliases
to the tables
and columns
SELECT messages.recipient_id, messages.sender_id,
messages.message,
recipient_data.username as recipient, sender_data.username
as sender
FROM ((messages
LEFT JOIN user_data AS recipient_data ON
messages.recipient_id =
user_data.id)
LEFT JOIN user_data AS sender_data ON messages.sender_id =
user_data.id)