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@tobikris
Created June 11, 2015 13:02
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SQL SELECT for bi-directional friends
SELECT
IF(`user_id`="1",`user_id`,`friend_id`) AS `user_id`,
IF(`user_id`="1",`friend_id`,`user_id`) AS `friend_id`,
`user_id` AS `source_id`
FROM
friends
WHERE
`user_id`="1"
OR
`friend_id`="1"
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