Help with Multirow funtion

[J_SS]

Table Input is the current data set, I am trying to create an extra column in the output table. If [RecordID] == 1 Then 1
Elseif IsNull([RecordID]) or [RecordID] <= [Row+1:RecordID] Then [SetID] + 1
Else [SetID] endif

Input
RecordID	Column 1	Column 2
1	aa	123
2	ab	345
3	ac	123
4	ad	234
5	ae	234
1	aa	123
2	ab	345
3	ac	123
4	ad	234
5	ae	234
1	aa	123
2	ab	345
3	ac	123
4	ad	234
5	ae	234

output
RecordID	Column 1	Column 2	SetID
1	aa	123	1
2	ab	345	1
3	ac	123	1
4	ad	234	1
5	ae	234	1
1	aa	123	2
2	ab	345	2
3	ac	123	2
4	ad	234	2
5	ae	234	2
1	aa	123	3
2	ab	345	3
3	ac	123	3
4	ad	234	3
5	ae	234	3

[caltang · Accepted solution]

You can use the Tile tool to achieve this without Multi-row tool.