drex88669 2012-06-28 05:39
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MySql:使用GROUP_CONCAT和COUNT时

I have a database in which there is a user table & how many time they reward record table I wanna result like this (WEEK WISE)

user_name user_week user_reward
abc          24,25,26    4,5,6

My query is like this

SELECT WEEK(cpd.added_date),COUNT(cpd.result)
FROM cron_players_data cpd WHERE cpd.player_id = 81
AND cpd.result = 2 AND cpd.status = 1
GROUP BY WEEK(cpd.added_date);

And Result is

user_name user_week user_reward
abc          24    4
abc          24    5
abc          24    6

i use group_concat with count but its useless is there any alternate method for this desire result

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1条回答 默认 最新

  • dongpu1331 2012-06-28 06:01
    关注

    You have 2 level grouping, first week, and then username, so i sugest you use a subquery for that first grouping like:

    SELECT
     user_name,
     GROUP_CONCAT(user_week) AS user_weeks, 
     GROUP_CONCAT(user_reward) AS user_rewards
    FROM (
      SELECT
       user_name,
       WEEK(cpd.added_date) AS user_week,
       COUNT(cpd.result) AS user_reward
      FROM cron_players_data AS cpd 
      WHERE
       cpd.player_id = 81 AND
       cpd.result = 2 AND
       cpd.status = 1
      GROUP BY user_week
    ) as temp
    GROUP BY user_name;
    
    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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