mysql - Condense 3 SELECTS down to one table -


the 3 statement (a little contrived simplicity) are:

select `user_id` `movie_id` = 1 select `user_id` `movie_id` = 2 select `user_id` `movie_id` = 3

what twofold:

  1. join 3 of above single table of id's match 3 of movie_id
  2. make of 1 query reduce mysql reads speed performance

i sure there simple way it, not strongest sql user, of help!

select count(distinct movie_id), user_id  table move_id in (1,2,3) group user_id having count(distinct movie_id) = 3

what obtain distinct count of movies per user_id. limits results users having count of 3.


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