1、两个步骤,稍微麻烦一些,用到了mysql的YEAR、MONTH、DAY等函数
select SUM(num) from wx_applet_20220328_sms
WHERE YEAR(FROM_UNIXTIME(time))= 2023
AND MONTH(FROM_UNIXTIME(time))= 5
AND DAY(FROM_UNIXTIME(time)) = 18
2、简单明了 用到了FROM_UNIXTIME 直接后面组装年月日即可
SELECT sum(num) FROM wx_applet_20220328_sms WHERE FROM_UNIXTIME(time,'%Y%m') = '202305';
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