---------- Forwarded message ---------- From: Jake <doug_jacob...@intuit.com> Date: Fri, Mar 20, 2009 at 8:50 PM Subject: Re: Subtract values that are in different rows To: Ashish Jain <26may.1...@gmail.com>
Ashish, Here's a sample: A B 1/1/09 12:05 PM Null Null Null Null 1/1/09 3:32 PM Null Null 1/2/09 9:35 AM Null Null Null Null Null Null Null Null 1/2/09 2:35 PM Null Null I need to subtract the first non Null value in column A from the first non Null value in column B and then the second non null value in column A from the second non Null value in column B and so on down the line. These date time values represent clock in and clock out times into a system so subtracting the time in from the time out will give me the duration of time they were logged into the system. On Fri, Mar 20, 2009 at 2:53 AM, Jake <doug_jacob...@intuit.com> wrote: > > Here's the setup: > 1. In column A I have date/time stamps. > 2. In column B I have text entries associated with the time stamps. > These > entries vary but each day starts with a date/time stamp of "System > Login" and > ends with a stamp of "System Shutdown". Kind of like a time clock > situation. > 3. I pull the start times with a VLOOKUP that looks for "System Login" > and the > stop times with a VLOOKUP that looks for "System Shutdown". If it > doesn't find > them, it enters "Null". > 4. Now I've got columns C & D with 100 rows that say either "Null" or > have a > date/time stamp. > 5. I now have to subtract the date/time values in column C from the > matching > date/time value in column D to get the duration of time worked for > that > particular day. > > The problem is that the start times and the stop times are in > different rows, > e.g. I might have the start time for 3/16/09 in C2 and the stop time > in D6, the > start time for 3/17/09 in C7 and the stop time in D10, and so on. Does > anyone > know of a formula I can enter in column E that will subtract the first > date/time > value in column C from the first date/time value in column D, the > second > date/time in column C from the second date/time in column D and so on > down the > line? Any help greatly appreciated. > > > > -- Regards Ashish Jain Sent from: New Delhi Delhi India. --~--~---------~--~----~------------~-------~--~----~ ------------------------------------------------------------------------------------- Some important links for excel users: 1. Excel and VBA Tutorials(Video and Text), Free add-ins downloads at http://www.excelitems.com 2. Excel tutorials at http://www.excel-macros.blogspot.com 3. Learn VBA Macros at http://www.vbamacros.blogspot.com 4. Excel Tips and Tricks at http://exceldailytip.blogspot.com To post to this group, send email to excel-macros@googlegroups.com If you find any spam message in the group, please send an email to: Ayush Jain @ jainayus...@gmail.com or Ashish Jain @ 26may.1...@gmail.com ------------------------------------------------------------------------------------- -~----------~----~----~----~------~----~------~--~---
