主题
判断某个表达式的布尔值,根据结果返回相应的值,支持多层嵌套。
IF(expression, result1, [result2])
IF(1=1,"right","wrong")
right
IF(A2>0,"增加",if(A2=0,"持平","下降"))
IF([利润]>0,"盈利",if([利润]=0,"盈亏平衡","亏损"))