table Name:donwlonadhistry
データは、9月分だけしか入っていません。
予想では、9月だけ2件と出て他は0件とでる予定だったのですが、
すべて2件と表示されてしまいます。なぜなのでしょうか...
SQL
1SELECT 2COUNT(downloadid = 1 and timestamp BETWEEN "2017-01-01" and "2017-01-31") As "1月", 3COUNT(downloadid = 1 and timestamp BETWEEN "2017-02-01" and "2017-02-30") As "2月", 4COUNT(downloadid = 1 and timestamp BETWEEN "2017-03-01" and "2017-03-31") As "3月", 5COUNT(downloadid = 1 and timestamp BETWEEN "2017-04-01" and "2017-04-30") As "4月", 6COUNT(downloadid = 1 and timestamp BETWEEN "2017-05-01" and "2017-05-31") As "5月", 7COUNT(downloadid = 1 and timestamp BETWEEN "2017-06-01" and "2017-06-30") As "6月", 8COUNT(downloadid = 1 and timestamp BETWEEN "2017-07-01" and "2017-07-31") As "7月", 9COUNT(downloadid = 1 and timestamp BETWEEN "2017-08-01" and "2017-08-31") As "8月", 10COUNT(downloadid = 1 and timestamp BETWEEN "2017-09-01" and "2017-09-30") As "9月", 11COUNT(downloadid = 1 and timestamp BETWEEN "2017-10-01" and "2017-10-31") As "10月", 12COUNT(downloadid = 1 and timestamp BETWEEN "2017-11-01" and "2017-11-31") As "11月", 13COUNT(downloadid = 1 and timestamp BETWEEN "2017-12-01" and "2017-12-31") As "12月" 14 15FROM downloadhistry
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2017/09/17 12:30