MYSQL查询找到最受欢迎的条目

问题描述

| 我的桌子看起来像：

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

我需要运行一个mySQL查询，该查询将为我提供最流行的hook_bait的名称，以及boily-最流行的boily是什么品牌和口味。 我不确定从哪里开始     

解决方法

您可以通过以下查询获得最受欢迎的hook_bait：

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

完整的示例查询：

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,(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