PowerQuery中对数据类型的判断,也就是excel中的各种isna isnumber类is函数的语法,即if Value.Is([data],type number) then "Number"else "Text"援引自https://community.powerbi.com/t5/Desktop/Is-there-an-ISNUMBER-or-ISTEXT-equivalent-in-Power-Query/td-p/1397434