mysql - 如何以u(píng)id為基準(zhǔn)查詢所有一分鐘之內(nèi)有兩條數(shù)據(jù)以上的數(shù)據(jù)
問(wèn)題描述
如下表
uid order moneytime1 100 10 2016-08-08 12:00:001 101 6 2016-08-08 12:00:582 102 8 2016-08-08 12:02:002 103 10 2016-08-08 12:02:332 104 15 2016-08-08 12:03:003 105 10 2016-08-08 12:03:011 106 10 2016-08-08 12:05:00
根據(jù)題意需要找到的數(shù)據(jù):
uid order moneytime1 100 10 2016-08-08 12:00:001 101 6 2016-08-08 12:00:582 102 8 2016-08-08 12:02:002 103 10 2016-08-08 12:02:332 104 15 2016-08-08 12:03:00
問(wèn)題解答
回答1:寫法一:
SELECT * FROM table AS aWHERE EXISTS ( SELECT 1 FROM table AS b WHERE a.uid = b.uid AND b.time >= date_sub(now(), INTERVAL 1 minute) GROUP BY b.uid HAVING count(1) > 1);
寫法二:
SELECT * FROM tableWHERE uid IN ( SELECT uid FROM table WHERE time >= date_sub(now(), INTERVAL 1 minute) GROUP BY uid HAVING count(1) > 1);
建議將date_sub(now(), INTERVAL 1 minute)用程序運(yùn)算出來(lái)再代替進(jìn)去。
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