Question 113630 in Mysql Question posted in
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Mysql – Select name, lastname, brand from table where brand is the most voted

I have this select

SELECT firstname, lastname, email, brand
FROM (SELECT brand, COUNT(brand) AS choiced 
FROM users 
GROUP BY brand  
ORDER BY `choiced` DESC
LIMIT 1) AS winner
ORDER BY RAND()
LIMIT 1

Error #1054 column firstname in field set is unknow.

I have table users, with columns id, firstname, lastname, email and brand
I need to select one (and only one) random user (firstname, lastname, email) from the users that selected the most voted brand.

So if I make:

SELECT brand, count(brand) AS choiced 
FROM users 
GROUP BY brand 
ORDER BY choiced DESC LIMIT 1

Result is: brand JOE DOE, Choiced 47.

But I don’t know how to obteined the random user inside those 47 users.

I hope that I explained myself, English is not my first language.

Tags:

3

Answers


  1. 0 
    SELECT firstname, lastname, email, brand,choiced 
FROM (SELECT firstname, lastname, email, brand, COUNT(brand) AS choiced 
FROM users 
GROUP BY brand  
ORDER BY COUNT(brand) DESC
LIMIT 1) AS winner
ORDER BY choiced
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  2. 0

    If there will be one brand with a maximum number of votes you may try the following:

    SELECT id, firstname, lastname, email, brand
  FROM users 
  WHERE brand = (
                 SELECT brand FROM users
                 GROUP BY brand ORDER BY COUNT(*) DESC LIMIT 1
                )
ORDER BY RAND()
LIMIT 1;

    If it could be more than one brand that have the max number of votes then you may try the following:

    SELECT id, firstname, lastname, email, brand
  FROM users 
  WHERE brand IN (
                 SELECT brand FROM users GROUP BY brand
                 HAVING COUNT(*) = (
                                    SELECT COUNT(*) FROM users
                                    GROUP BY brand ORDER BY COUNT(*) DESC LIMIT 1
                                   )
                )
ORDER BY RAND()
LIMIT 1;

    See a demo.

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  3. 0 
    SELECT users.*
  -- subquery 1 - calculate the max rows amount per brand
FROM ( SELECT COUNT(*) max_count
       FROM users
       GROUP BY brand
       ORDER BY 1 DESC LIMIT 1 ) max_count
  -- subquery 2 - get brands list with the max rows amount
JOIN ( SELECT brand, COUNT(*) max_count
       FROM users
       GROUP BY 1 ) max_count_brand USING (max_count)
  -- join users of the brands above
JOIN users USING (brand)
  -- get one random user
ORDER BY RAND() LIMIT 1;
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