Formula to find single date from multiple dates

[oam]

I need a list of each date from column B in the attached sheet. From all the multiple dates I need a list of just one date from each date group.
Column B of attached contains multiples of the same date what I am needing is to have a list of each date form each date range.

Hope this makes sense.
Thank you any and all help

Example of desired result:
1/2/2023
2/3/2023
2/10/2023
2/17/2023

[June7]

Where do you want this list to be output?

In VBA, add a general module and paste this code:

Sub GetDates()
'code for Excel VBA
    Const adOpenStatic = 3
    Const adLockOptimistic = 3
    Const adCmdText = &H1
    Dim cn As Object, rs As Object
    Set cn = CreateObject("ADODB.Connection")
    Set rs = CreateObject("ADODB.Recordset")
    
    cn.Open "Provider=Microsoft.ACE.OLEDB.12.0;" & _
        "Data Source=" & ThisWorkbook.FullName & ";" & _
        "Extended Properties=""Excel 12.0;HDR=Yes;IMEX=1;TypeGuessRows=0;ImportMixedTypes=Text"""
    
    rs.Open "SELECT DISTINCT [Data$].[Period End Date] FROM [Data$] WHERE NOT [Data$].[Period End Date] IS NULL", cn, adOpenStatic, adLockOptimistic, adCmdText
    Worksheets("Data").Range("L2").CopyFromRecordset rs
    rs.MoveFirst
    Do While Not rs.EOF
        Debug.Print rs(0)
        rs.MoveNext
    Loop
End Sub

Or install Power Query add-in and learn it. I am trying it now for your requirement and it is challenging. I can get it to work but complex enough I don't want to try to describe to you here.

[oam]

That works but is there not a formula that could do the same?

Thank you for your help

[Bob Phillips]

Easiest way would be to copy the date column to a blank column, then do Data>Data Tools>Remove Duplicates (don't expand the selection), and that should get you your result.

[June7]

Okay, Bob, that worked. If this is a one-time occurrence, manual exercise is fine. If this is going to be a recurring event, I would probably use VBA recordset or PowerQuery.

I don't know if there is a formula to accomplish this.

[Paul_Hossler]

1. VBA

Option Explicit

Sub Macro1()
    Worksheets("Data").Range("B:B").Copy Worksheets("Sheet1").Range("A1")
    Application.CutCopyMode = False
    
    Application.DisplayAlerts = False
    Worksheets("Sheet1").Range("$A:$A").RemoveDuplicates Columns:=1, Header:=xlYes
    Application.DisplayAlerts = True
End Sub

2. Worksheet for newer versions of Excel

[June7]

Okay, Paul, simpler VBA. Nice!

For the formula, you have to put it into as many cells as you expect there would be distinct date values, even in the header row. It's magic! How does it know to return different values? In Excel 2010 it shows as an array formula:

{=_xlfn.UNIQUE(Data!$B1:$B725,FALSE)}

[oam]

Thank you all for your help!
I will work to integrate them into my sheet and I think Paul's solution is the simplest.

Again, thank you all for your input all ideas could work.

[Paul_Hossler]

Okay, Paul, simpler VBA. Nice! For the formula, you have to put it into as many cells as you expect there would be distinct date values, even in the header row. It's magic! How does it know to return different values? In Excel 2010 it shows as an array formula: {=_xlfn.UNIQUE(Data!$B1:$B725,FALSE)}

Dynamic arrays were added in later versions

https://exceljet.net/glossary/dynami...ill%20range%22.

https://exceljet.net/dynamic-array-formulas-in-excel

https://a4accounting.com.au/new-form...mbol-in-excel/

The # symbol follows the reference and it makes it incredibly easy to refer to spilled ranges. You use the # after the reference to the cell in the top left corner of the spilled range.

The @ symbol precedes the reference and it forces Excel to treat the reference as it would have pre-dynamic arrays.

Attached a workbook I was using to investigate

As of January 2023, many more new functions have now been released to take advantage of the dynamic array engine. The complete list of new functions is: ARRAYTOTEXT, BYCOL, BYROW, CHOOSECOLS, CHOOSEROWS, DROP, EXPAND, FILTER, HSTACK, ISOMITTED, LAMBDA, LET, MAKEARRAY, MAP, RANDARRAY, REDUCE, SCAN, SEQUENCE, SORT, SORTBY, STOCKHISTORY, TAKE, TEXTAFTER, TEXTBEFORE, TEXTSPLIT, TOCOL, TOROW, UNIQUE, VALUETOTEXT, VSTACK, WRAPCOLS, WRAPROWS, XLOOKUP, and XMATCH.

[June7]

Correction, in Access 2010 it showed the same formula in each cell but doesn't seem to work. Here is method for older versions.

Get a list of unique values in Excel & extract unique rows (ablebits.com)

[Miranda34]

Correction, in Access 2010 it showed the same formula in each cell but doesn't seem to work. Here is method for older versions.

Get a list of unique values in Excel & extract unique rows (ablebits.com)

This fix is so much better, thank you