如果sign_time时间日期类型where extend(sign_time,year to day)=today如果sign_time是字符串,且前10位是日期where substr(sign_time,1,10)=extend(today,year to day)
显示全部如果sign_time时间日期类型
where extend(sign_time,year to day)=today
如果sign_time是字符串,且前10位是日期
where substr(sign_time,1,10)=extend(today,year to day)
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