Question

我有一个数据库表thanks_entry 列

 - entryid
 - varname
 - userid
 - contenttype
 - contentid
 - dateline
 - receiveduserid

该表存储用户/用户/给予/感谢的数据/感谢我想获得每月最喜欢/感谢的用户的统计数据

查询：

SELECT receiveduserid,COUNT(receiveduserid) AS receivedthanks 
FROM thanks_entry 
WHERE varname ='likes' AND dateline > 1420070400 
AND dateline <1422748800 
GROUP BY userid ORDER BY COUNT(receiveduserid) DESC LIMIT 20

此查询应返回按用户ID分组的结果..但查看我找到的结果

- receiveduserid|receivedthanks
 - 185883|190
 - 43455|100
 - 163068|85
 - 2|66
 - 186270|49
 - 189468|34
 - 105597|22
 - 2|17
 - 186270|17
 - 163068|16
 - 117147|15
 - 186270|15
 - 186270|14
 - 186643|13
 - 2|12
 - 189170|12
 - 118500|8
 - 2|8
 - 105597|8
 - 2|7

正如您在此处注意到的那样虽然我grouped by receiveduserid .. receiveduserid 2未分组，但在结果中多次出现.. 我做错了什么？

Answer 1

试试这个： 您可能需要关注此

SELECT receiveduserid,COUNT(receiveduserid) AS receivedthanks 
FROM thanks_entry 
WHERE varname ='likes' AND dateline > 1420070400 
AND dateline <1422748800 
GROUP BY receiveduserid  ORDER BY receivedthanks DESC LIMIT 20

并且您希望按多列分组，然后使用,（逗号），如GROUP BY receiveduserid, another_column第一列优先是第一列...

Answer 2

选择查询语句的一部分应该包括查询语句的一部分字段。

    SELECT userid,COUNT(receiveduserid) AS receivedthanks 
    FROM thanks_entry 
    WHERE varname ='likes' AND dateline > 1420070400 
    AND dateline <1422748800 
    GROUP BY userid ORDER BY COUNT(receiveduserid) DESC LIMIT 20

Mysql结果返回未分组

2 个答案: