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tanyad
Advocate III
Advocate III

Rankby help - I think its RANKX!

I have searched high and low for an answer but cannot find anything that works.  Hoping someone can help.

 

I want to add a 'Calculated Column' to a table that has millions of rows.  The main columns in my table that are affected by the requirement are:

 

CustID     Code         Date

 

I want to add a Rank (Order) column that the logic groups by CustID & Code and then adds the Rank/Order based on the 3rd Column Date.   I don't want to actually group the rows I just want to add the Rank/Order column based on that logic if that makes sense?2020-01-29_19-34-10.png

 

1 ACCEPTED SOLUTION
Jimmy801
Community Champion
Community Champion

Hello @tanyad 

 

but this is how Power Query works. You have to apply a Table.Group and then Sort and add a Index-column.

Here the complete solution

let
	Source = #table
	(
		{"CustID","Code","Date"},
		{
			{"1000","A","43101"},	{"1000","B","42736"},	{"1000","B","43466"},	{"2000","A","43101"},	{"2000","A","42736"},	{"2000","B","43466"},	{"2000","B","43101"}

					}
	),
    ToDate = Table.TransformColumns
	(
		Source,
		{
			{
				"Date",
				each Date.From(Number.From(_)),
				type date
			}
		}
	),
    Group = Table.Group(ToDate, {"CustID", "Code"}, {{"AllRows", each _, type table [CustID=text, Code=text, Date=date]}}),
	SortAndIndex = Table.TransformColumns
	(
		Group,
		{
			{
				"AllRows",
				(Tableint)=> let 
				Sort = Table.Sort(Tableint, {{"Date", Order.Ascending}}),
				AddIndex = Table.AddIndexColumn(Sort, "Order",1,1)
				in 
				AddIndex
			}
		}
	),
    DeleteOther = Table.SelectColumns(SortAndIndex,{"AllRows"}),
    Expand = Table.ExpandTableColumn(DeleteOther, "AllRows", {"CustID", "Code", "Date", "Order"}, {"CustID", "Code", "Date", "Order"})
in
	Expand

Copy paste this code to the advanced editor in a new blank query to see how the solution works. If this solution fits your need, copy and past a part of it and implement it in your query.

If this post helps or solves your problem, please mark it as solution (to help other users find useful content and to acknowledge the work of users that helped you)
Kudoes are nice too

Have fun

Jimmy

View solution in original post

1 REPLY 1
Jimmy801
Community Champion
Community Champion

Hello @tanyad 

 

but this is how Power Query works. You have to apply a Table.Group and then Sort and add a Index-column.

Here the complete solution

let
	Source = #table
	(
		{"CustID","Code","Date"},
		{
			{"1000","A","43101"},	{"1000","B","42736"},	{"1000","B","43466"},	{"2000","A","43101"},	{"2000","A","42736"},	{"2000","B","43466"},	{"2000","B","43101"}

					}
	),
    ToDate = Table.TransformColumns
	(
		Source,
		{
			{
				"Date",
				each Date.From(Number.From(_)),
				type date
			}
		}
	),
    Group = Table.Group(ToDate, {"CustID", "Code"}, {{"AllRows", each _, type table [CustID=text, Code=text, Date=date]}}),
	SortAndIndex = Table.TransformColumns
	(
		Group,
		{
			{
				"AllRows",
				(Tableint)=> let 
				Sort = Table.Sort(Tableint, {{"Date", Order.Ascending}}),
				AddIndex = Table.AddIndexColumn(Sort, "Order",1,1)
				in 
				AddIndex
			}
		}
	),
    DeleteOther = Table.SelectColumns(SortAndIndex,{"AllRows"}),
    Expand = Table.ExpandTableColumn(DeleteOther, "AllRows", {"CustID", "Code", "Date", "Order"}, {"CustID", "Code", "Date", "Order"})
in
	Expand

Copy paste this code to the advanced editor in a new blank query to see how the solution works. If this solution fits your need, copy and past a part of it and implement it in your query.

If this post helps or solves your problem, please mark it as solution (to help other users find useful content and to acknowledge the work of users that helped you)
Kudoes are nice too

Have fun

Jimmy

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