B1写公式:=IF(ISERROR(FIND("A",A1)),"",A1).然后向下拉/填充即可。
B1单元格写入公式=IF(COUNTIF(A1,"*A*"),A1,"")或=IF(COUNT(FIND("A",A1)),A1,"")下拉填充公式
=IF(IFERROR(FIND("A",A1,1),"")<>"",A1,"")