requête MYSQL pour trouver l'entrée la plus populaire

Question

Ma table ressemble:

hook_bait | brand | flavour 
---------------------------------- 
corn  |   | 
bread  |   | 
boily  | variable | variable 

J'ai besoin d'exécuter une requête mysql qui va me donner le nom de hook_bait le plus populaire, et si un boily - quelle marque et la saveur la boily la plus populaire est.

Je ne sais pas où commencer

Answer 1

Vous pouvez obtenir le hook_bait le plus populaire par requête comme ceci:

SELECT 
    hook_bait, 
    COUNT(hook_bait) AS popularity 
FROM sample_table 
GROUP BY hook_bait 
ORDER BY popularity DESC 
LIMIT 0, 1 

Exemple complet requête:

SELECT 
    hook_bait, 
    IF(hook_bait = 'boily', (SELECT brand FROM sample_table t2 WHERE t2.hook_bait = t1.hook_bait GROUP BY brand ORDER BY COUNT(brand) DESC LIMIT 1), '-') AS brand, 
    IF(hook_bait = 'boily', (SELECT flavour FROM sample_table t2 WHERE t2.hook_bait = t1.hook_bait GROUP BY flavour ORDER BY COUNT(flavour) DESC LIMIT 1), '-') AS flavour 
FROM sample_table t1 
GROUP BY hook_bait 
ORDER BY COUNT(hook_bait) DESC 
LIMIT 0, 1