Earn the coveted Fabric Analytics Engineer certification. 100% off your exam for a limited time only!
I have 2 date columns (begin and end) with other attribute columns (attr1/2/3) that I need to expand out on dependent on begin and end date. The last date range in the series happens over 3 days and I need 1 day per row. How to do in Power Query.
I have tried to add columns and caculate out but I cannot get there
Before
Begin,End,Attr1,Attr2,Attr3
1/1/2020,1/1/2020,a,b,c
1/2/2020,1/2/2020,a,b,c
1/3/2020,1/5/2020,a,b,d
After
EventDate,Attr1,Attr2,Attr3
1/1/2020,a,b,c
1/2/2020,a,b,c
1/3/2020,a,b,d
1/4/2020,a,b,d
1/5/2020,a,b,d
Thanks in advance
Solved! Go to Solution.
@syale ,
Try this mcode:
let
Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WMtQ31DcyMDLQgTMSdZJ0kpVidUByRjA5I0w5Y5icKUIuRSk2FgA=", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [#"Begin,End,Attr1,Attr2,Attr3" = _t]),
#"Demoted Headers" = Table.DemoteHeaders(Source),
#"Split Column by Delimiter" = Table.SplitColumn(#"Demoted Headers", "Column1", Splitter.SplitTextByDelimiter(",", QuoteStyle.Csv), {"Column1.1", "Column1.2", "Column1.3", "Column1.4", "Column1.5"}),
#"Promoted Headers" = Table.PromoteHeaders(#"Split Column by Delimiter", [PromoteAllScalars=true]),
#"Changed Type3" = Table.TransformColumnTypes(#"Promoted Headers",{{"Attr1", type text}, {"Attr2", type text}, {"Attr3", type text}}),
#"Changed Type with Locale" = Table.TransformColumnTypes(#"Changed Type3", {{"Begin", type date}, {"End", type date}}, "en-US"),
#"Added Custom" = Table.AddColumn(#"Changed Type with Locale", "Custom", each List.Dates(
[Begin],
Duration.TotalDays([End] - [Begin]) + 1,
#duration(1,0,0,0)
)),
#"Expanded Custom" = Table.ExpandListColumn(#"Added Custom", "Custom"),
#"Removed Columns" = Table.RemoveColumns(#"Expanded Custom",{"Begin", "End"}),
#"Renamed Columns" = Table.RenameColumns(#"Removed Columns",{{"Custom", "EventDate"}}),
#"Changed Type" = Table.TransformColumnTypes(#"Renamed Columns",{{"Attr1", type text}, {"Attr2", type text}, {"Attr3", type text}, {"EventDate", type date}})
in
#"Changed Type"
Hi, @syale try the code below:
// output
let
Source = Table.FromRecords(Json.Document(Binary.Decompress(Binary.FromText("i65WckpNz8xTslIyjNEHIiMDIwMlHSXXvBR0IceSkiJDoGAilG0EZCdB2cZAdrJSrQ6KaUaYphmRb5oxpmmmRJuWolQbCwA=", BinaryEncoding.Base64),Compression.Deflate))),
fx = (row)=> List.Generate(()=>Date.From(row{0}), each _<= Date.From(row{1}), each Date.AddDays(_, 1), each {_}&List.Skip(row,2)),
rows = Table.ToRows(Source),
n = List.Count(rows),
gen = List.Generate(()=>{null, {}}, each (_{0}<n)??true, each let i = _{0}+1??0 in {i, fx(rows{i})}, each _{1}),
result = Table.FromRows(List.Combine(gen), {"EventDate"}&List.Skip(Table.ColumnNames(Source), 2))
in
result
@syale ,
Try this mcode:
let
Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WMtQ31DcyMDLQgTMSdZJ0kpVidUByRjA5I0w5Y5icKUIuRSk2FgA=", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [#"Begin,End,Attr1,Attr2,Attr3" = _t]),
#"Demoted Headers" = Table.DemoteHeaders(Source),
#"Split Column by Delimiter" = Table.SplitColumn(#"Demoted Headers", "Column1", Splitter.SplitTextByDelimiter(",", QuoteStyle.Csv), {"Column1.1", "Column1.2", "Column1.3", "Column1.4", "Column1.5"}),
#"Promoted Headers" = Table.PromoteHeaders(#"Split Column by Delimiter", [PromoteAllScalars=true]),
#"Changed Type3" = Table.TransformColumnTypes(#"Promoted Headers",{{"Attr1", type text}, {"Attr2", type text}, {"Attr3", type text}}),
#"Changed Type with Locale" = Table.TransformColumnTypes(#"Changed Type3", {{"Begin", type date}, {"End", type date}}, "en-US"),
#"Added Custom" = Table.AddColumn(#"Changed Type with Locale", "Custom", each List.Dates(
[Begin],
Duration.TotalDays([End] - [Begin]) + 1,
#duration(1,0,0,0)
)),
#"Expanded Custom" = Table.ExpandListColumn(#"Added Custom", "Custom"),
#"Removed Columns" = Table.RemoveColumns(#"Expanded Custom",{"Begin", "End"}),
#"Renamed Columns" = Table.RenameColumns(#"Removed Columns",{{"Custom", "EventDate"}}),
#"Changed Type" = Table.TransformColumnTypes(#"Renamed Columns",{{"Attr1", type text}, {"Attr2", type text}, {"Attr3", type text}, {"EventDate", type date}})
in
#"Changed Type"