As mentioned earlier, I have conducted a small interview with Charley Kyd – an Excel MVP, author of four books and 50+ articles for various national media, owner of exceluser.com and creator of popular products like plug-n-play excel dashboard kit. He sent me the answers almost a week back, but I could push the interview only today due to my travel and settling down stuff. As expected the interview is very entertaining and useful. I hope you like this.
Q: What are your 3 favorite formulas?
I don’t have favorite formulas, but here are three functions I use all the time:
- INDEX
- MATCH (with the third argument equal to zero)
- SUMPRODUCT
Q: If I am an excel newbie, what three books or resources you would recommend?
MrExcel.com forum for asking questions
Check out Microsoft discussion groups and microsoft.public.excel newsgroup for asking questions
Q: How can managers and analysts be more productive in using excel?
- Don’t upgrade to Excel 2007, or, if you do, keep a copy of Excel 2003 on your computer. (When you install 2007 on top of 2003, answer No when the install program asks if you want to upgrade to the new version.)
- Wherever possible, separate your data from your presentation, then use formulas to pull your data into your presentation. (My three “favorite” functions help you to do that.)
- Learn shortcut keys. In versions prior to Excel 2007, the Alt key commands are consistent. And 2007, allows you to use the earlier versions’ Alt-key combinations for many things.
Q: What resources (books, websites) would you recommend for this type of people?
I’ll be talking more about separating data and presentation at ExcelUser.com over the coming year. Subscribe to my newsletter to be alerted about developments.
Q: Do you think a small business owner run her shop using excel and few free tools ? What you suggest her?
Yes and no. I would not recommend that you use Excel for accounting. Quicken is really inexpensive and does a much better job. But Excel can help in many other ways, including analysis, forecasting, pricing, and so on.
Q: Where do you think most of us waste a lot of time while using excel ?
- Importing data from other systems / sources?
We perform the same reporting or analytical task over and over again, but with different data. When you notice yourself doing this, try to come up with ways that you can use formulas in one workbook to pull the data you need from a data workbook. That way, you can merely point your analysis or presentation to an updated data workbook without having to do everything over again from scratch.
- Formulas and errors ?
Many people don’t know how to switch to manual calculation. (Tools, Options, Calculation, Manual.) This allows us to work on a big spreadsheet without waiting for it to calculate all the time. Then, when we want to calculate, we merely press the F9 key.Many people create much larger workbooks and spreadsheets than they should, and then get lost in them. I try to keep my workbooks and spreadsheets small, unless I have a specific reason not to do so.
Many people create many links between workbooks. This is a problem because the links can break, or get broken, or generate circular calculation errors. I try to link only from data to presentation.
Assume we have a column of data in the range A5:A10. If we want to sum that data, people generally enter the formula =SUM(A5:A10). Instead, I format cells A4 and A11 with a full border and gray fill. Then I sum using the range A4:A11. This allows me to add or delete rows between the gray borders without having to worry about formulas that reference that data. As long as I don’t touch the two gray border rows, I know I’m safe. (I don’t use this approach if I’m going to print the page for others, because it looks ugly. But that’s not a problem most of the time.)
- Formatting ?
I try never to use Merge Cells for centering labels across several columns. (In fact, I doubt that I’ve used Merge Cells more than half a dozen times, *ever*.) Instead, I use Format, Cells, Alignment, Horizontal, Center Across Selection. This achieves the same results but without my having to deal with the problems that merged cells creates.
- VBA ? VBA is very powerful, and can be a lot of fun. But be careful, it can grow to be an addiction. Most VBA users have found themselves spending hours to write a program that saves them several minutes. That’s obviously not a good use of our time.I try very hard to comment my code heavily. And when I look at old code, I *always* wish that I had commented it even more heavily. When you’re in the middle of a project, the reason for each line of code is obvious. But six months later, the whole thing is a mystery. COMMENT YOUR CODE.
Q: What is the best way for a non-programmer to learn and use VBA in her day to day work?
- Stay with a version of Excel prior to 2007, for two reasons: There aren’t any good macro books about 2007, and the macro recorder doesn’t work for a lot of what you do in 2007.
- Get a beginners book and start to experiment.
- Use the macro recorder and look at the results.
- Ask questions in newsgroups and forums.
- Get to know the Object Browser. (In the VBE, choose View, Object Browser. Or merely press the F2 key.)
I am very thankful to Charley for agreeing for this interview and sharing his views on some of the day to day excel issues all of us face. Many thanks to commenters who suggested some of the questions. I hope you found this interview helpful. Let me know through comments or email what you think about this.
Also share your ideas on who else should be interviewed?














13 Responses to “Using pivot tables to find out non performing customers”
To avoid the helper column and the macro, I would transpose the data into the format shown above (Name, Year, Sales). Now I can show more than one year, I can summarize - I can do many more things with it. ASAP Utilities (http://www.asap-utilities.com) has a new experimental feature that can easily transpose the table into the correct format. Much easier in my opinion.
David
Of course with alternative data structure, we can easily setup a slicer based solution so that everything works like clockwork with even less work.
David, I was just about to post the same!
In Contextures site, I remember there's a post on how to do that. Clearly, the way data is layed out on the very beginning is critical to get the best results, and even you may thinkg the original layout is the best way, it is clearly not. And that kind of mistakes are the ones I love ! because it teaches and trains you to avoid them, and how to think on the data structure the next time.
Eventually, you get to that place when you "see" the structure on the moment the client tells you the request, and then, you realized you had an ephiphany, that glorious moment when data is no longer a mistery to you!!!
Rgds,
Chandoo,
If the goal is to see the list of customers who have not business from yearX, I would change the helper column formula to :
=IF(selYear="all",sum(C4:M4),sum(offset(C4:M4,,selyear-2002,1,columns(C4:M4)-selyear+2002)))This formula will sum the sales from Selected Year to 2012.
JMarc
If you are already using a helper column and the combox box runs a macro after it changes, why not just adjust the macro and filter the source data?
Regards
I gotta say, it seems like you are giving 10 answers to 10 questions when your client REALLY wants to know is: "What is the last year "this" customer row had a non-zero Sales QTY?... You're missing the forest for the trees...
Change the helper column to:
=IFERROR(INDEX(tblSales[[#Headers],[Customer name]:[Sales 2012]],0,MATCH(9.99999999999999E+307,tblSales[[#This Row],[Customer name]:[Sales 2012]],1)),"NO SALES")
And yes, since I'm matching off of them for value, I would change the headers to straight "2002" instead of "Sales 2002" but you sort the table on the helper column and then and there you can answer all of your questions.
Hi thanks for this. Just can't figure out how you get the combo box to control the pivot table. Can you please advise?
Cheers
@Kevin.. You are welcome. To insert a combo box, go to Developer ribbon > Insert > form controls > combo box.
For more on various form controls and how to use them, please read this: http://chandoo.org/wp/2011/03/30/form-controls/
Thanks Chandoo. But I know how to insert a combobox, I was more referring to how does in control the year in the pivot table? Or is this obvious? I note that if I select the Selected Year from the PivotTable Field List it says "the field has no itens" whereas this would normally allow you to change the year??
Thanks again
worked it out thanks...
when =data!Q2 changes it changes the value in column N:N and then when you do a refreshall the pivottable vlaues get updated
Still not sure why PivotTable Field List says “the field has no itens"?? I created my own pivot table and could not repeat that.
Hi, I put the sales data in range(F5:P19) and added a column D with the title 'Last sales in year'. After that, in column D for each customer, the simple formula
=2000+MATCH(1000000,E5:P5)
will provide the last year in which that particular customer had any sales, which can than easily be managed by autofilter.
Somewhat longer but perhaps a bit more solid (with the column titles in row 4):
=RIGHT(INDEX($F$4:$P$19,1,MATCH(1000000,F5:P5)),4)
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