Samir Sheikh :
I want to get data using vise versa column from database in mySql Database.
For example, see following image.
Above image you can see column name initiator_user_id & friend_user_id column , So I want all the those friends_user_id and initiator_user_id that are in stored in both column. So here 1 is stored in both column so i want 89,63,155 ids that are stored in both column.
I have tried to get record using CASE Statement but it'll not work.
SQL Query..
SELECT *,
CASE
WHEN friend_user_id != '' THEN initiator_user_id
WHEN initiator_user_id != '' THEN friend_user_id
ELSE ''
END AS users_id
FROM tablename
Someone please let me know , How could i get those records?
Aaron W. :
Handful of ways this could be done - I quickly threw together a UNION DISTINCT statement on sqlfiddle that may help. Essentially it's just taking two queries and putting them together to get you your results.
(SELECT initiator_user_id as user_id FROM test WHERE friend_user_id = 1)
UNION DISTINCT
(SELECT friend_user_id as user_id FROM test WHERE initiator_user_id = 1)
Guess you like
Origin http://43.154.161.224:23101/article/api/json?id=372557&siteId=1