Question

I want to only return a row if either of the subquery returns a field.

SELECT upd8r_user_accts.id, (

SELECT fb_id
FROM upd8r_facebook_accts
WHERE user_id = upd8r_user_accts.id
) as facebook, (

SELECT twitter
FROM upd8r_twitter_accts
WHERE user_id = upd8r_user_accts.id
) as twitter
FROM  `upd8r_user_accts` 

also i am returning id/access token values for each of the subqueries- how could i return a boolean value of yes or no?

Answer 1

SELECT
  upd8r_user_accts.id,
  upd8r_facebook_accts.fb_id  IS NOT NULL  AS has_fb_id,
  upd8r_twitter_accts.twitter IS NOT NULL  AS has_twitter
FROM
  upd8r_user_accts
LEFT JOIN
  upd8r_twitter_accts
    ON upd8r_twitter_accts.user_id = upd8r_user_accts.id
LEFT JOIN
  upd8r_facebook_accts
    ON upd8r_facebook_accts.user_id = upd8r_user_accts.id
WHERE
     upd8r_facebook_accts.fb_id  IS NOT NULL
  OR upd8r_twitter_accts.twitter IS NOT NULL