Need help with TEXTJOIN for Unique Values

[skushner]

Need some help changing the following formula to only grab unique values:

{=TEXTJOIN(",",TRUE,IF($A$2:$A$20000=A2,$C$2:$C$20000,""))}

Here's an example of the data (the last column is where this formula goes for each row:

[TABLE="width: 612"]
<colgroup><col><col><col><col></colgroup><tbody>[TR]
[TD]Part Number[/TD]
[TD]Project[/TD]
[TD]Project Parent[/TD]
[TD]TEXTJOIN[/TD]
[/TR]
[TR]
[TD]961344[/TD]
[TD]W13-1 [/TD]
[TD]W13[/TD]
[TD]W13[/TD]
[/TR]
[TR]
[TD]1001156[/TD]
[TD]A36-1 [/TD]
[TD]A36[/TD]
[TD]A36,A36[/TD]
[/TR]
[TR]
[TD]1001156[/TD]
[TD]A36-2 [/TD]
[TD]A36[/TD]
[TD]A36,A36[/TD]
[/TR]
[TR]
[TD]1001521[/TD]
[TD]P21-1 [/TD]
[TD]P21[/TD]
[TD]P21,P21[/TD]
[/TR]
[TR]
[TD]1001521[/TD]
[TD]P21-2 [/TD]
[TD]P21[/TD]
[TD]P21,P21[/TD]
[/TR]
[TR]
[TD]1023070[/TD]
[TD]A32-3 [/TD]
[TD]A32[/TD]
[TD]A32,L11,L20,L8[/TD]
[/TR]
[TR]
[TD]1023070[/TD]
[TD]L11-1[/TD]
[TD]L11[/TD]
[TD]A32,L11,L20,L8[/TD]
[/TR]
[TR]
[TD]1023070[/TD]
[TD]L20-1[/TD]
[TD]L20[/TD]
[TD]A32,L11,L20,L8[/TD]
[/TR]
[TR]
[TD]1023070[/TD]
[TD]L8-1 [/TD]
[TD]L8[/TD]
[TD]A32,L11,L20,L8[/TD]
[/TR]
[TR]
[TD]1023435[/TD]
[TD]L17-1 [/TD]
[TD]L17[/TD]
[TD]L17,L17[/TD]
[/TR]
[TR]
[TD]1023435[/TD]
[TD]L17-2[/TD]
[TD]L17[/TD]
[TD]L17,L17[/TD]
[/TR]
</tbody>[/TABLE]


I'm trying to get rid of the bolded instances where it shows the same project parent twice (like P21, P21) and only show it once so each value after the comma is unique.
I really don't want to use VBA for this because it will be an ongoing report so i'd rather use formulas that I can copy/paste if possible.

If someone could help me with this i'd really appreciate it!!

 

[Domenic]

Try...

D2, confirmed with CONTROL+SHIFT+ENTER, and copied down:

=TEXTJOIN(",",TRUE,IF(FREQUENCY(IF($A$2:$A$12=A2,MATCH(IF($A$2:$A$12=A2,$C$2:$C$12),IF($A$2:$A$12=A2,$C$2:$C$12),0)),ROW($A$2:$A$12)-ROW($A$2)+1)>0,$C$2:$C$12,""))

Hope this helps!

 

[skushner]

OMG Thank you soooo much! This works perfectly!!!