week(dateinmonth(today(),1))+"---"+week(dateinmonth(today(),-1))
today()换成你的日期
我这个获取本月是9-13周,格式自己调整
![1646873250386174.png image.png](/upload/wenda/20220310/1646873250386174.png)
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range(week(dateinmonth(today(),1)),week(dateinmonth(today(),-1)))
![1646877866523798.png image.png](/upload/wenda/20220310/1646877866523798.png)
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INDEXOFARRAY(maparray(greparray(range(todate(DATEINMONTH(TODAY(),1)),todate(DATEINMONTH(TODAY(),-1))),weekday(item)=1),format(item,"yyyy-MM-dd(EEE)")),1)
![1646878324430034.png image.png](/upload/wenda/20220310/1646878324430034.png)