php - 从具有 20 条或更多消息的各个 ip 选择所有消息

Question

我试图从具有 20 条或更多消息的各个 ip 中选择所有消息，但我在选择它时遇到了问题。这是我的查询:

SELECT messages
FROM currentChat
HAVING count(id) >= 20
GROUP by ip

Answer 1

您需要加入或类似的东西:

SELECT cc.*
FROM currentChat cc JOIN
     (SELECT ip, COUNT(*) as cnt
      FROM currentChat
      GROUP by ip
      HAVING cnt >= 20
     ) i20
     ON cc.ip = i20.ip;