Forum Discussion
M Query Formula to bring Previous Month Segment
Hi Anonymous ,
Open "Advanced Editor" and copy and paste the following code.
let Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WMtQ31DcyMDJW0lFyBOLgxJzUYqVYHRQJJxQJI1QdjsnJ+aV5JRhyqJqMERLOQOybWJSdWpKZl44u6YIhaYKqE8U6E5waYwE=", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Parse = _t, #"Emp code" = _t, Segment = _t]), #"Changed Type" = Table.TransformColumnTypes(Source,{{"Parse", type date}, {"Emp code", type text}, {"Segment", type text}}), #"Grouped Rows" = Table.Group(#"Changed Type", {"Emp code"}, {{"Count", each Table.AddIndexColumn(_,"Index",1,1),type table}}), #"Expanded Count" = Table.ExpandTableColumn(#"Grouped Rows", "Count", {"Parse", "Segment", "Index"}, {"Parse", "Segment", "Index"}), #"Added Custom" = Table.AddColumn(#"Expanded Count", "Custom", each if [Index]<>1 then List.Min(Table.SelectRows(#"Expanded Count",(x)=>x[Emp code]=[Emp code] and x[Index]=[Index]-1)[Segment]) else null), #"Added Custom1" = Table.AddColumn(#"Added Custom", "Custom.1", each let _maxindex=List.Max(Table.SelectRows(#"Added Custom",(x)=>x[Emp code]=[Emp code])[Index]) in if [Custom]=null then 0 else if [Index]=_maxindex and [Custom]=[Segment] then 0 else if [Index]=_maxindex and [Custom]<>[Segment] then 1 else null), #"Added Custom2" = Table.AddColumn(#"Added Custom1", "Custom.2", each let _maxindex=List.Max(Table.SelectRows(#"Added Custom",(x)=>x[Emp code]=[Emp code])[Index]), _count=Table.RowCount(Table.SelectRows(#"Added Custom1",(x)=>x[Emp code]=[Emp code] and x[Custom.1]=1)) in if [Index]<>_maxindex and _count>0 then -1 else [Custom.1]), #"Removed Columns" = Table.RemoveColumns(#"Added Custom2",{"Index", "Custom", "Custom.1"}) in #"Removed Columns"Then the result is as follows.
Best Regards,
Neeko Tang
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Hi,
Thanks for replying here's the sample data:
Note: i have a monthly data upto 12 months of rows average 300 for each month.
| Parse | Emp code | Segment |
| 1/1/2023 | A | Sales |
| 1/1/2023 | B | Sales |
| 1/2/2023 | A | Accounts |
| 1/2/2023 | B | Sales |
| 1/3/2023 | C | Marketing |
| 1/3/2023 | D | Marketing |
| 1/4/2023 | C | Accounts |
| 1/4/2023 | D | Marketing |
Here's the Expected output first if there's a segment change for a employee then his previous month segment should be in the newly changed segment month and another column i need to create is the segment count if there's no change 0, if change then new segment month = 1 and previous month = -1,
Please look at the tables and columns (parse, emp code ) more clearly for better understanding.
| Parse | Emp code | Segment | Segment Name | Tranfer Count |
| 1/1/2023 | A | Sales | -1 | |
| 1/1/2023 | B | Sales | 0 | |
| 1/2/2023 | A | Accounts | Sales | 1 |
| 1/2/2023 | B | Sales | 0 | |
| 1/3/2023 | C | Marketing | -1 | |
| 1/3/2023 | D | Marketing | 0 | |
| 1/4/2023 | C | Sales | Marketing | 1 |
| 1/4/2023 | D | Marketing | 0 |
Super Userlet
Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WMtQ31DcyMDJW0lFyBOLgxJzUYqVYHRQJJzQJI2QdjsnJ+aV5JRhy6JqMYRLOQOybWJSdWpKZl44u6YJF0gRZJ5p1Jjg0xgIA", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Parse = _t, #"Emp code" = _t, Segment = _t]),
#"Changed Type" = Table.TransformColumnTypes(Source,{{"Parse", type date}, {"Emp code", type text}, {"Segment", type text}}),
#"Added Custom" = Table.AddColumn(#"Changed Type", "Prior Segment", (k)=> try Table.LastN(Table.SelectRows(#"Changed Type", each [Emp code]=k[Emp code] and [Parse]<k[Parse]),1)[Segment]{0} otherwise null)
in
#"Added Custom"