Issue: Slow Power Query Filter

[mitchellC]

I have a very simple query that is essentially just filtering a data set but it seems to be taking a long time. 

Can anyone see why this is taking so long just to do some basic minipulation of a not very large data set (1500 rows). 

let
Source = Excel.CurrentWorkbook(){[Name="BPC_Cost"]}[Content],

#"Promoted Headers" = Table.PromoteHeaders(Source, [PromoteAllScalars=true]),

#"Changed Type" = Table.TransformColumnTypes(#"Promoted Headers",{{"EBITDA #", type any}, {"Lookup", type text}, {"Profit Centre", type text}, {"Cost Centre", type text}, {"Currency", type text}, {"Company Code", type text}, {"Account", type text}, {"Reference", type text}, {"Column9", type any}, {"1", type any}, {"2", type any}, {"3", type any}, {"4", type any}, {"5", type any}, {"6", type any}, {"7", type any}, {"8", type any}, {"9", type any}, {"10", type any}, {"11", type any}, {"12", type any}, {"13", type any}, {"1-avg", type any}, {"2-avg", type any}, {"3-avg", type any}, {"4-avg", type any}, {"5-avg", type any}, {"6-avg", type any}, {"7-avg", type any}, {"8-avg", type any}, {"9-avg", type any}, {"10-avg", type any}, {"11-avg", type any}, {"12-avg", type any}, {"13-avg", type any}}),

#"Filtered Rows1" = Table.SelectRows(#"Changed Type", each ([#"EBITDA #"] <> null and [#"EBITDA #"] <> "Named Range End")),

#"Added Custom" = Table.AddColumn(#"Filtered Rows1", "Tab Name", each "BPC_Costs"),

#"Reordered Columns" = Table.ReorderColumns(#"Added Custom",{"Tab Name", "EBITDA #", "Lookup", "Profit Centre", "Cost Centre", "Currency", "Company Code", "Account", "Reference", "Column9", "1", "2", "3", "4", "5", "6", "7", "8", "9","10","11","12","13","1-avg","2-avg","3-avg","4-avg","5-avg","6-avg","7-avg","8-avg","9-avg","10-avg","11-avg","12-avg","13-avg"})
in
#"Reordered Columns"

I have noticed I get a much quicker perfomance when I load the data to a new sheet as opposed to an existing sheet alongside the source data. Is there any reason for this?

[v-hashadapu]

Hi @mitchellC , Please let us know if your issue is solved. If it is, consider marking the answer that helped 'Accept as Solution', so others with similar queries can find it easily. If not, please share the details.
Thank you.

[v-hashadapu]

Hi @mitchellC , Please let us know if your issue is solved. If it is, consider marking the answer that helped 'Accept as Solution', so others with similar queries can find it easily. If not, please share the details.
Thank you.

[v-hashadapu]

Hi @mitchellC , Thank you for reaching out to the Microsoft Community Forum.

Please let us know if your issue is solved. If it is, consider marking the answers that helped 'Accept as Solution', so others with similar queries can find them easily. If not, please share the details.
Thank you.

[lbendlin · Accepted solution]

There is no need to reorder columns. Power BI will ignore that and show columns alphabetically.

let
Source = Excel.CurrentWorkbook(){[Name="BPC_Cost"]}[Content],

#"Promoted Headers" = Table.PromoteHeaders(Source, [PromoteAllScalars=true]),

#"Filtered Rows1" = Table.SelectRows(#"Promoted Headers" , each ([#"EBITDA #"] ?? "Named Range End") <>  "Named Range End")),

#"Added Custom" = Table.AddColumn(#"Filtered Rows1", "Tab Name", each "BPC_Costs")
in
#"Added Custom"