迭代,1次=IF(E1="","",IF(B1="",TODAY(),B1))写在B1,然后往下拉~当E1为空时,B1为空;E1不为空时且B1为空时,B1为今日;E1为空且B1不为空时,B1还是B1~要启用一次迭代计算
迭代,1次=IF(E1="","",IF(B1="",TODAY(),B1))写在B1,然后往下拉~当E1为空时,B1为空;E1不为空时且B1为空时,B1为今日;E1为空且B1不为空时,B1还是B1~要启用一次迭代计算
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