Join/Concatinate column text based on criteria - excel

Question

I have a data set like this:
A B C
----------
1 A blue
1 A red
1 B blue
2 A red
3 B blue
3 B green
3 C blue
4 C blue
4 A blue
4 A green
And a separate table like this (this is already auto generated using UNIQUE()):
E F G
-----
1 A
1 B
2 A
3 B
3 C
4 C
4 A
I want to join text from column C and show the result in column G based on a criteria given in columns E and F. The result I am looking for would look like this (all concatenated/joined text should be in column G):
E F G
-----
1 A blue red
1 B blue
2 A red
3 B blue green
3 C blue
4 C blue
4 A blue green
Optional, not needed but would be nice: The delimiter between generated text is a line brake so each line is in a separate line inside the same row.
Thank you.

Answer 1

place your first table (data table/ 1,2,3) in column A to C.
and another table (5,6,7) in column E to G
Enter below Array Formula in G2
{=CONCAT(IF(A2:A11&B2:B11=E2&F2,C2:C11&" ",""))}
you will get your result.
For earlier versions, we need to create UDF
Function ConcatUDF(rng() As Variant, ByVal delim As String) As String
Dim a, i As Long
For i = 1 To UBound(rng, 1)
If rng(i, 1) <> "" Then
ConcatUDF = ConcatUDF & _
IIf(ConcatUDF = "", "", delim) & rng(i, 1)
End If
Next
End Function
and we will get the result.
Edited:
I forgot to absolute the references. Please consider below mnetioned formula.
with Build in CONCAT formula for excel 2016
=CONCAT(IF($A$2:$A$11&$B$2:$B$11=E2&F2,$C$2:$C$11&" ",""))
with UDF for earlier version of excel
=ConcatUDF(IF($B$2:$B$11&$A$2:$A$11=F2&E2,$C$2:$C$11,"")," ")