Question

hi i have an Mysql table as follow,

post_id  | user_id  |   status | date_created
  2          2         funny     20121022120627
  2          3         lame      20121023120627
  3          1         useful    20121023120627
  3          3         lame      20121023120627
  3          4         useful    20121023120627

now i need a query on getting a post_id for popular post based on status count.
Means post with many status for the day.Example post_id = 3 will be popular since it has 3 status voted, so i can find the owner of this post on post table.Thanks!!

Answer 1

Try this one,

SELECT post_id
FROM tableName
GROUP BY post_ID
HAVING COUNT(*) = 
(
    SELECT MAX(x.counts)
    FROM
    (
        SELECT post_id, COUNT(*) counts
        FROM tableName
        GROUP BY post_id
    ) x
)

SQLFiddle Demo

basically, I won’t recomment to use limit here since there are possibilities that certain Post_ID has the same number of votes.