I would like to write an IF statement, where the cell is left blank if the condition is FALSE. Note that, if the following formula is entered in C1 (for which the condition is false) for example:
=IF(A1=1,B1,"")
and if C1 is tested for being blank or not using =ISBLANK(C1), this would return FALSE, even if C1 seems to be blank. This means that the =IF(A1=1,B1,"") formula does not technically leave the cells blank if the condition is not met.
Any thoughts as to a way of achieving that? Thanks,
Try this instead
=IF(ISBLANK(C1),TRUE,(TRIM(C1)=""))
This will return true for cells that are either truly blank, or contain nothing but white space.
See this post for a few other options.
edit
To reflect the comments and what you ended up doing: Instead of evaluating to "" enter another value such as 'deleteme' and then search for 'deleteme' instead of blanks.
=IF(ISBLANK(C1),TRUE,(TRIM(C1)="deleteme"))
Unfortunately, there is no formula way to result in a truly blank cell, "" is the best formulas can offer.
I dislike ISBLANK because it will not see cells that only have "" as blanks. Instead I prefer COUNTBLANK, which will count "" as blank, so basically =COUNTBLANK(C1)>0 means that C1 is blank or has "".
If you need to remove blank cells in a column, I would recommend filtering on the column for blanks, then selecting the resulting cells and pressing Del. After which you can remove the filter.
I wanted to add that there is another possibility - to use the function na().
e.g. =if(a2 = 5,"good",na());
This will fill the cell with #N/A and if you chart the column, the data won't be graphed. I know it isn't "blank" as such, but it's another possibility if you have blank strings in your data and "" is a valid option.
Also, count(a:a) will not count cells which have been set to n/a by doing this.
If you want to use a phenomenical (with a formula in it) blank cell to make an arithmetic/mathematical operation, all you have to do is use this formula:
=N(C1)
assuming C1 is a "blank" cell
I've found this workaround seems to do the trick:
Modify your original formula:
=IF(A1=1,B1,"filler")
Then select the column, search and replace "filler" with nothing. The cells you want to be blank/empty are actually empty and if you test with "ISBLANK" it will return TRUE. Not the most elegant, but it's quick and it works.
The easiest solution is to use conditional formatting if the IF Statement comes back false to change the font of the results cell to whatever color background is. Yes, technically the cell isn't blank, but you won't be able to see it's contents.
This shall work (modification on above, workaround, not formula)
Modify your original formula: =IF(A1=1,B1,"filler")
Put filter on spreadsheet, choose only "filler" in column B, highlight all the cells with "filler" in them, hit delete, remove filter
You can do something like this to show blank space:
=IF(AND((E2-D2)>0)=TRUE,E2-D2," ")
Inside if before first comma is condition then result and return value if true and last in value as blank if condition is false
The formula in C1
=IF(A1=1,B1,"")
is either giving an answer of "" (which isn't treated as blank) or the contents of B1.
If you want the formula in D1 to show TRUE if C1 is "" and FALSE if C1 has something else in then use the formula
=IF(C2="",TRUE,FALSE)
instead of ISBLANK
Here is what I do
=IF(OR(ISBLANK(AH38),AH38=""),"",IF(AI38=0,0,AH38/AI38))
Use the OR condition OR(ISBLANK(cell), cell="")
I think all you need to do is to set the value of NOT TRUE condition to make it show any error then you filter the errors with IFNA().
Here is what your formula should look like =ifna(IF(A1=1,B1,NA()))
Here is a sheet that returns blanks from if condition : https://docs.google.com/spreadsheets/d/15kWd7oPWQmGgYD_PLz9YpIldwnKWoXPHtHQAT3ulqVc/edit?usp=sharing
To Validate data in column A for Blanks
Step 1: Step 1: B1=isblank(A1)
Step 2: Drag the formula for the entire column say B1:B100; This returns Ture or False from B1 to B100 depending on the data in column A
Step 3: CTRL+A (Selct all), CTRL+C (Copy All) , CRTL+V (Paste all as values)
Step4: Ctrl+F ; Find and replace function Find "False", Replace "leave this blank field" ; Find and Replace ALL
There you go Dude!
Instead of using "", use 0. Then use conditional formating to color 0 to the backgrounds color, so that it appears blank.
Since blank cells and 0 will have the same behavior in most situations, this may solve the issue.
This should should work: =IF(A1=1, B1)
The 3rd argument stating the value of the cell if the condition is not met is optional.
来源：https://stackoverflow.com/questions/18768020/if-statement-how-to-leave-cell-blank-if-condition-is-false-does-not-work