Select rows where column name not equals multiple values

Question

I'm creating friend system,where users able to add as friend,accept friend request etc....

Table Structure

userfr_id(AUTO_INCREMENT)
user_id
friend_id
accepted(int 1)

Working functions

Friend request
Accept friend request
Display all friends..

Not Working functions

• Delete friends
• Cancel Friend request
• check friend exits

Now i'm try to delete users as follow method

• check user id and friend_id available row
• get auto increment
• use auto increment to run delete query

But my problem is any method available to check user id and friend_id available row ??

sample date in table row

i couldn't use where in because filed name are different

Any help

Answer 1

Mayby just try with:

SELECT *
  FROM table
 WHERE ( ( user_id = 4 AND friend_id = 5 ) OR
         ( user_id = 5 AND friend_id = 4 ) )              
   AND accepted = 1

If it returns one row, there is friendship, otherwise, they are not friends.

Answer 2

SELECT * FROM table_name WHERE !(ISNULL([columnname]));

TRy this place your query and additional condition