CODEWITHSUNDEEP
phpmysqlsql
Nagini
Nagini

Reputation: 125

SELECT data with WHERE 2 condition

t_msg 

msg_id | message | user_id

example data : 

01 | hai how are you | 01
02 | will you marry me ? | 02

t_users
example data : 

uid | username | full_name
01 | greg | Greg Fish
02 | drown | Leon Drown

t_friendship
example data : 

uid | uid_fk | status
01 | 02 | friend
02 | 01 | friend

I have 3 tables relations. Now I want message from user show and from other user if status friend.
Example if uid 1 logged in:
uid 1
hai how are you

uid 2 (this show because uid 1 and uid 2 are friend.
will you marry me ?

and this is the query that I made :

$query = mysql_query("
        SELECT 
        M.msg_id, 
        M.uid_fk, 
        M.message, 
        M.created,
        U.full_name, 
        U.profile_pic, 
        U.username,
        U.uid, 
        F.status, 
        F.uid 

        FROM
        t_haps_wall M,
        t_users U, 
        t_join_user F 

        WHERE
        M.uid_fk=U.uid

Upvotes: 1

Views: 133

Answers (1)

Mahmoud Gamal
Mahmoud Gamal

Reputation: 79979

You have to JOIN the three tables, with ON f.uid_fk = u.uid with the thread table, like so:

SELECT 
  M.msg_id, 
  M.uid_fk, 
  M.message, 
  M.created,
  U.full_name, 
  U.profile_pic, 
  U.username,
  U.uid, 
  F.status, 
  F.uid 
FROM t_haps_wall M
INNER JOIN t_users U ON m.user_id = u.uid
INNER JOIN t_join_user F ON f.uid_fk = u.uid

SQL Fiddle Demo

Upvotes: 1

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