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Microsoft Excel: Geeks Unite

October 27, 2009

I keep a collection of handy formulas, scripts, and chart styles for use in Excel in my personal.xlsb file. This way, I can easily grab and reuse them for future projects. One thing I often do in Excel is use it as a reporting tool. I usually build three sheets – Data, Formula, and Display. The Data sheet holds all of the raw data, usually either pasted in from other spreadsheets or pulled from other sources using an ODBC connection. The Formula sheet is just that – a collection of formulas that scan the Data sheet and manipulate the information based on parameters I’ve put into the formula, or referenced in other cells. The final sheet, Display, is populated by its own formulas, VBA scripts, or directly from the Formula sheet. This is a straightforward way to auto-build repeatable reports with minor filter applications like Salesperson Name, Region, or Date.

The most common Date filtering can be done using the collection of formulas below. Cut and Paste as needed:

First Day of This Month: =DATE(YEAR(TODAY()),MONTH(TODAY()),1)
Last Day of This Month:  =DATE(YEAR(TODAY()),MONTH(TODAY())+1,0)

First Day of Last Month: =DATE(YEAR(TODAY()),MONTH(TODAY())-1,1)
Last Day of Last Month:  =DATE(YEAR(TODAY()),MONTH(TODAY()),0)

First Day of Next Month: =DATE(YEAR(TODAY()),MONTH(TODAY())+1,1)
Last Day of Next Month:  =DATE(YEAR(TODAY()),MONTH(TODAY())+2,0)


Most Recent Sunday:  =IF(WEEKDAY(TODAY())=1,TODAY(),TODAY()-WEEKDAY(TODAY()-1))


Most Recent Tuesday:  =IF(WEEKDAY(TODAY())-3>0,TODAY()-WEEKDAY((TODAY()-3)),(IF(WEEKDAY(TODAY())-3<0,(TODAY()-4)-WEEKDAY(TODAY()),TODAY())))

Most Recent Wednesday:  =IF(WEEKDAY(TODAY())-4>0,TODAY()-WEEKDAY((TODAY()-4)),(IF(WEEKDAY(TODAY())-4<0,(TODAY()-3)-WEEKDAY(TODAY()),TODAY())))

Most Recent Thursday:  =IF(WEEKDAY(TODAY())-5>0,TODAY()-WEEKDAY((TODAY()-5)),(IF(WEEKDAY(TODAY())-5<0,(TODAY()-2)-WEEKDAY(TODAY()),TODAY())))


Most Recent Saturday:  =IF(WEEKDAY(TODAY())=7,TODAY(),TODAY()-WEEKDAY(TODAY()))

Yes, there are times when scripting is better, but formulas can be quick, easy, and very portable. Try these out for your own reports and play around with them to get different results.

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