问题
I have quite a large excel document that has a good amount of vlookups, if functions, etc. In some of my tabs I cannot get my IF Functions to work and I have checked my logic 10 times over. I can't seem to figure out why excel is stopping at a certain condition and not checking the rest of my nests. Here's what a sample of the data looks like
AE AI AL AM AN
DateResolved DateCreated Response Time Dummy Response Time Bucket
1/7/2016 1/1/2016 6 - 0-7
1/18/2016 1/3/2016 15 - 15-30
1/25/2016 1/4/2016 21 - 15-30
1/25/2016 1/4/2016 21 - 15-30
1/25/2016 12/31/2015 25 - 15-30
NULL 1/4/2016 Outstanding >30 1 >30
NULL 1/4/2016 Outstanding >30 1 >30
1/26/2016 1/4/2016 22 - 15-30
NULL 1/4/2016 Outstanding >30 1 >30
I'm taking DateResolved - (MINUS) DateCreated to get a Response Time. This Response time has this nested IF Function:
=IF(AE2="NULL",IF(MAX(AI:AI)-AI2>30,"Outstanding >30","Outstanding <30"),AE2-AI2)
Which is great, because it did what I wanted it to. Outstanding >30 days shows up in column AL(the max date in DATE CREATED is sometime in July, but it's truncated, that's why the IF statement is satisfied when DateResolved = NULL , max DateCreated - DateCreated > 30, Response Time is returned as "Outstanding >30".
The problem lies in column AN - Response Time Bucket. Here's the formula:
=IF(AL2<=7,"0-7",IF(AL2<=14,"8-14",IF(AL2<=30,"15-30",IF(AL2>30, ">30",IF(AL2="Outstanding >30",AL2," Outstanding <30")))))
I simply just want AN to return "Outstanding >30" when AL is "Outstanding >30" and to return "Outstanding <30" when AL is "Outstanding <30". The formula seems to stop AFTER the fourth nest, and lumps my "Outstanding" Response times into ">30", which I DO NOT want.
I've tried this many different ways. First I substituted AL2 in the last nest for "Outstanding >30". I also tried creating a dummy in column AM where the formula is =if(AL2="Outstanding >30",1,0) and then substituting that into column AN. I set my last nest as IF(AM2=1,"Outstanding >30","Outstanding <30"). It still didn't work. It is STILL quitting after the 4th nest and saying ">30". I even tried to take the numbers out and replaced "Outstanding >30" in column AL with OST and substituting "OST" into my formula so that the excel is not mistakenly reading the last bit of "Outstanding >30".
UPDATE: I edited the formula to include ">30" as the last piece of my formula, i.e. it is what appears if the condition is FALSE. I'm not sure why it worked, but it does. Here it is:
=IF(O2<=7,"0-7",IF(O2<=14,"8-14",IF(O2<=30,"15-30",IF(O2="Outstanding >30","Outstanding >30",IF(O2="Outstanding <30","Outstanding <30",">30")))))`
Does anyone know why?
回答1:
The reason this is happening is that
"Outstanding >30">30
is evaluating to TRUE.
For whatever reason, it appears that Excel treats text as greater than any number value when doing a comparison like this.
回答2:
Reorganize your formula:
=IF(ISNUMBER(AL2),IF(AL2<=7,"0-7",IF(AL2<=14,"8-14",IF(AL2<=30,"15-30",">30"))),AL2)
回答3:
It's important to understand how Excel handles text (including text that contains numbers). When you compare the value "Outstanding > 30" to any number, "Outstanding > 30" will always be higher. In other words:
="Outstanding >30" > 999999
will output TRUE.
There are multiple ways to modify your formula to work. I suggest you check if AL2 = "Outstanding >30" and "Outstanding <30" at the beginning of your formula before checking the number of days.
Here's a rework of your formula. Notice use of the OR function.
=IF( OR( AL2="Outstanding >30", AL2="Outstanding <30" ), AL2, IF(AL2<=7,"0-7",IF(AL2<=14,"8-14",IF(AL2<=30,"15-30",IF(AL2>30, ">30",IF(AL2="Outstanding >30",AL2," Outstanding <30"))))))
Also, did you intend to include a blank space at the end of the formula?
..." Outstanding <30"
Lastly, you might consider adding a column that calculates the response time using numbers only (no text). Even if you keep a column with text, you can use the underlying number to calculate that text. Also, your formula might use the TODAY() function as the date resolved where the value is NULL if
来源：https://stackoverflow.com/questions/39415448/nested-if-functions-in-excel-not-working