Comments on: Formulas for Unique Data

By: Mina Moussa

Mina Moussa — Wed, 21 Apr 2010 15:54:00 +0000

=LARGE(IF(MATCH(C7:C15,C7:C15,0)=ROW(C7:C15)-MIN(ROW(C7:C15))+1,C7:C15,""),3)

this didnt work

By: JOHN

JOHN — Wed, 26 Nov 2008 13:57:00 +0000

Hi Hima : is it that you are tying to count number of times a particular printer has appeared in the list?

By: Hima

Hima — Mon, 18 Aug 2008 03:56:00 +0000

I need help in counting the unqiue records,

Column
Device TypeDevice Model
MFP Canon NP 6050
PrinterHP Color LaserJet 2500N
PrinterHP Color LaserJet 4600n
PrinterHP LaserJet 1010
PrinterHP LaserJet 4000
PrinterHP LaserJet 4050
PrinterHP LaserJet 4100N
PrinterHP LaserJet 4200N
PrinterHP LaserJet 4200N
PrinterHP LaserJet 4200N
PrinterHP LaserJet 4200N
Fax Panasonic AnyModel
MFP Canon NP 6050
PrinterHP Color LaserJet 2500N
PrinterHP Color LaserJet 2550N
PrinterHP Color LaserJet 3700N

this is my data, now i need to if count unique record in cloumn device model where device type is printer.can some one please help me,

By: Paul McGrath

Paul McGrath — Wed, 16 Apr 2008 15:17:00 +0000

Data Validation:
Is it possible to apply the =COUNTIF($H$1:H1,H1)=1 across many worksheets? I have split an asset register across many worksheets and I would like it to check that the serial number does not exist in any worksheet. Is that possible?
Thanks
Paul

By: Brian Price

Brian Price — Tue, 06 Mar 2007 13:48:00 +0000

Oops! There should be “not equal” signs after the last bracket for each LEFT function. Soz.

By: Brian Price

Brian Price — Tue, 06 Mar 2007 13:46:00 +0000

Natasha,

I assume your trying to catch mobile phone numbers (beginning 07...) and premium rate lines (beginning 09...).

Make sure your phone number column is formatted as text.

Apply the following custom formula in data validation

=AND(LEFT(cell_ref,2)"07?,LEFT(cell_ref,2)"09?)

and add the appropriate warning in your Error Alert.

Brian

By: Dick Kusleika

Dick Kusleika — Tue, 06 Mar 2007 01:53:00 +0000

Natasha: Are 07 and 09 country codes? Can you give some examples of phone numbers that should give the alert?

By: Natasha kuipers

Natasha kuipers — Mon, 05 Mar 2007 13:00:00 +0000

I am trying to validate a column so that it will send an error alert when 07……..telephone numbers and 09…….. telephone numbers are entered into the column. I am a bit confused about the custom formula to validate this cell. can you help

By: Matt Cook

Matt Cook — Mon, 29 Jan 2007 15:46:00 +0000

In the last array formula by Laurent Longre it is worth noting that this formula will only work when there are no blank cells in colrange.

One way around this if you have blank cells at the end of the range is to use ozgrids expanding ranges (http://www.ozgrid.com/Excel/DynamicRanges.htm)

Does anyone know how to make it work if the blank cells are in the middle of the range?

Thanks,

Matt

By: Tennor

Tennor — Tue, 02 Jan 2007 23:22:00 +0000

The formula
=COUNTIF($A$1:A1,A1)=1
works by entering data. If you copy the data from another cell Control+C and paste it Control+V to the Column A (subject to data validation), it will be pasted and data validation will be bypassed!
Question: How to implement proper data validation? Ensuring that either way Data Entering and/or Copy-Pasting will be validated.
Thanks,
Tennor