Php 计算发生在以下位置的事件：

如何修改此查询以实际工作？我想数一数Mike拥有的5个最常见的序列号，并在站点上显示序列数据的型号-所有者-数量。

您必须更改WHERE子句和GROUP by的顺序

试试这个：

SELECT serial, model, owner, COUNT(*) AS occurrences 
FROM cars
GROUP BY serial WHERE owner = 'Mike'
ORDER BY occurrences DESC 
LIMIT 5

按序列分组，其中所有者='Mike'到所有者='Mike'按序列分组

  SELECT serial, model, owner, COUNT(*) AS occurrences 
  FROM cars
  WHERE owner = 'Mike'
  GROUP BY serial 
  ORDER BY occurrences DESC 
  LIMIT 5