Caluculated_start_day__c false IF( MONTH(Today())=12, IF( Created_Day__c >= DATE(YEAR(today()),01,01), 1, 0 ), IF( Created_Day__c >= DATE(YEAR(today())-1,MONTH(Today())+1,01), 1, 0 ) ) BlankAsZero 统计开始日(1年前) 创建日 18 false 0 false false Number false