Mysql自带的年月日函数
SELECT * from meeting where year(time)=year('2018-10-18') and month(time)=month('2018-10-18') and day(time)=day('2018-10-18')
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SELECT * from meeting where year(time)=year('2018-10-18') and month(time)=month('2018-10-18') and day(time)=day('2018-10-18')