Sequential Order column based on multiple criteria

Question

&nbsp;I am in need of creating a column "sequential order"&nbsp; that will assign numerical order to each unique subset under the hub.&nbsp; Here's the catch...the hub parent should always be first &amp; not all hubs have subsets.&nbsp; Each subset in the hub gets numbered sequentially.&nbsp; Below is the desired result column "Seq Order".&nbsp; Any help will be greatly appreciated.&nbsp;HubHub NameSubset IDSubset NameSeq Order1FW&nbsp;FW02INA702INA02INA624GUAVA13SB&nbsp;SB04LLLE700LLLE04LLLE203APPLE14LLLE521BANANA24LLLE700GRAPE34LLLE136ORANGE44LLLE953PEAR54LLLE630MANGO64LLLE631PINEAPPLE74LLLE632COCONUT85COL028COL06CIN609CIN07DTN&nbsp;DTN08MAR&nbsp;MAR09TWI&nbsp;TWI010MID&nbsp;MID011SP&nbsp;SP012PTB&nbsp;PTB013BEC&nbsp;BEC014STO&nbsp;STO0

mfelix · Accepted Answer

Hi&nbsp;unknown917&nbsp;,
&nbsp;
Do a group by the hub then add a new column with the following code:
Table.AddIndexColumn ([HubRows], "Seq Order",0)
Now expand the columns you need to see.
&nbsp;
Full code below:
&nbsp;
let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("bZHBDoMgEER/pfHcA2LVekRqDYkFotgejP//G93B5VDpZTO8YZcBtq0oi2vx/FC5HGK/boUkaayi2oqkf3kjb1THVb0Pp6LV0vMUEmDYMU3TEMeItDg5UqBVeZ9btUS2XlnFx2cDx1n5rK2sGqpuVnbMvK7GaX5Q89lpKgx8UZPLLeTwxg5/YzYVnkU77ewaolnH9URVyDtrcOTSxqJHdKzBW9KPYPn1oEDvMc/M9MWR0Rc+hikUaBnDm0faTCpiBF98+hZ/QMT1IX0WVMR4mX7QjKEixk2X4NIMUvv+BQ==", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Hub = _t, #"Hub Name" = _t, #"Subset ID" = _t, #"Subset Name" = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"Hub", Int64.Type}, {"Hub Name", type text}, {"Subset ID", Int64.Type}, {"Subset Name", type text}}),
    #"Grouped Rows" = Table.Group(#"Changed Type", {"Hub"}, {{"HubRows", each _, type table [Hub=nullable number, Hub Name=nullable text, Subset ID=nullable number, Subset Name=nullable text, Seq Order=nullable number]}}),
    #"Added Custom" = Table.AddColumn(#"Grouped Rows", "Custom", each Table.AddIndexColumn ([HubRows], "Seq Order",0)),
    #"Expanded Custom" = Table.ExpandTableColumn(#"Added Custom", "Custom", {"Hub Name", "Subset ID", "Subset Name", "Seq Order"}, {"Hub Name", "Subset ID", "Subset Name", "Seq Order"})
in
    #"Expanded Custom"

&nbsp;
&nbsp;

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Sequential Order column based on multiple criteria

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Hub	Hub Name	Subset ID	Subset Name	Seq Order
1	FW		FW	0
2	INA	702	INA	0
2	INA	624	GUAVA	1
3	SB		SB	0
4	LLLE	700	LLLE	0
4	LLLE	203	APPLE	1
4	LLLE	521	BANANA	2
4	LLLE	700	GRAPE	3
4	LLLE	136	ORANGE	4
4	LLLE	953	PEAR	5
4	LLLE	630	MANGO	6
4	LLLE	631	PINEAPPLE	7
4	LLLE	632	COCONUT	8
5	COL	028	COL	0
6	CIN	609	CIN	0
7	DTN		DTN	0
8	MAR		MAR	0
9	TWI		TWI	0
10	MID		MID	0
11	SP		SP	0
12	PTB		PTB	0
13	BEC		BEC	0
14	STO		STO	0