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Hi,
I am asking for help in creating a cumulative sum in Power Query based on conditions. I am attaching a screenshot with sample data. In PowerQuery I have columns user_id, quantity, main_flag, continue_flag, new_flag. To illustrate this better, I created auxiliary columns sum_index and sum_range.
The excel condition for sum_index:
=IF([@[main_flag]]=0;0;
IF([@[new_flag]]=1;1;
IF([@[continue_flag]]=1;F1+1)))
The cumulative total is calculated based on these indexes and the value from the quantity column. If main_flag = 0, then cumulative sum = 0.
Solved! Go to Solution.
Hi @Mateusz_ ,
Have you solved your problem? If not, you can try this.
Here is my sample data:
Do not perform any operations after the original table is imported. First I add a new table following the next steps:
Put all of the M function into the Advanced Editor:
let
Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WMjAwVNJRAmEDOI7VISRuiiRniCRuDBU3RFNvgkMcp71GGBLm5kZYNSDEUR0EETcyxLCZsEHEiVsYmgPZlhgWQ8TNcIjjMgenOKrlJBsUCwA=", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [ID = _t, quantity = _t, main_flag = _t, continue_flag = _t, new_flag = _t]),
#"Changed Type" = Table.TransformColumnTypes(Source,{{"ID", type text}, {"quantity", Int64.Type}, {"main_flag", Int64.Type}, {"continue_flag", Int64.Type}, {"new_flag", Int64.Type}}),
#"Filtered Rows" = Table.SelectRows(#"Changed Type", each ([continue_flag] = 1)),
#"Grouped Rows" = Table.Group(#"Filtered Rows", {"ID"}, {{"Index", each Table.AddIndexColumn(_, "Index", 1, 1, Int64.Type)}}),
#"Expanded Index" = Table.ExpandTableColumn(#"Grouped Rows", "Index", {"quantity", "main_flag", "continue_flag", "new_flag", "Index"}, {"Index.quantity", "Index.main_flag", "Index.continue_flag", "Index.new_flag", "Index.Index"})
in
#"Expanded Index"
And we will get such a new table:
Still select Blank Query:
And now let put another M function into the Advanced Editor:
let
Source = Table.NestedJoin(Origin, {"ID", "quantity", "main_flag", "continue_flag", "new_flag"}, Table, {"ID", "Index.quantity", "Index.main_flag", "Index.continue_flag", "Index.new_flag"}, "Table (2)", JoinKind.LeftOuter),
#"Expanded Table (2)" = Table.ExpandTableColumn(Source, "Table (2)", {"Index.Index"}, {"Table (2).Index.Index"}),
#"Added Custom" = Table.AddColumn(#"Expanded Table (2)", "sum_index", each if [new_flag] = 1 then 1 else [#"Table (2).Index.Index"] + 1),
#"Removed Columns" = Table.RemoveColumns(#"Added Custom",{"Table (2).Index.Index"}),
#"Added Custom1" = Table.AddColumn(#"Removed Columns", "Custom", each if [sum_index] = 1 then [quantity]
else List.Sum(
Table.SelectRows(
#"Added Custom",
(row) => row[ID] = [ID] and row[sum_index] <= [sum_index]
)[quantity]
)),
#"Replaced Value" = Table.ReplaceValue(#"Added Custom1",null,0,Replacer.ReplaceValue,{"ID", "sum_index", "Custom"})
in
#"Replaced Value"
Then we will get the final output as below ( The results are in a different order than your screenshot, but the data results are the same ) :
Best Regards,
Dino Tao
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.
Hi @Mateusz_ ,
Have you solved your problem? If not, you can try this.
Here is my sample data:
Do not perform any operations after the original table is imported. First I add a new table following the next steps:
Put all of the M function into the Advanced Editor:
let
Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WMjAwVNJRAmEDOI7VISRuiiRniCRuDBU3RFNvgkMcp71GGBLm5kZYNSDEUR0EETcyxLCZsEHEiVsYmgPZlhgWQ8TNcIjjMgenOKrlJBsUCwA=", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [ID = _t, quantity = _t, main_flag = _t, continue_flag = _t, new_flag = _t]),
#"Changed Type" = Table.TransformColumnTypes(Source,{{"ID", type text}, {"quantity", Int64.Type}, {"main_flag", Int64.Type}, {"continue_flag", Int64.Type}, {"new_flag", Int64.Type}}),
#"Filtered Rows" = Table.SelectRows(#"Changed Type", each ([continue_flag] = 1)),
#"Grouped Rows" = Table.Group(#"Filtered Rows", {"ID"}, {{"Index", each Table.AddIndexColumn(_, "Index", 1, 1, Int64.Type)}}),
#"Expanded Index" = Table.ExpandTableColumn(#"Grouped Rows", "Index", {"quantity", "main_flag", "continue_flag", "new_flag", "Index"}, {"Index.quantity", "Index.main_flag", "Index.continue_flag", "Index.new_flag", "Index.Index"})
in
#"Expanded Index"
And we will get such a new table:
Still select Blank Query:
And now let put another M function into the Advanced Editor:
let
Source = Table.NestedJoin(Origin, {"ID", "quantity", "main_flag", "continue_flag", "new_flag"}, Table, {"ID", "Index.quantity", "Index.main_flag", "Index.continue_flag", "Index.new_flag"}, "Table (2)", JoinKind.LeftOuter),
#"Expanded Table (2)" = Table.ExpandTableColumn(Source, "Table (2)", {"Index.Index"}, {"Table (2).Index.Index"}),
#"Added Custom" = Table.AddColumn(#"Expanded Table (2)", "sum_index", each if [new_flag] = 1 then 1 else [#"Table (2).Index.Index"] + 1),
#"Removed Columns" = Table.RemoveColumns(#"Added Custom",{"Table (2).Index.Index"}),
#"Added Custom1" = Table.AddColumn(#"Removed Columns", "Custom", each if [sum_index] = 1 then [quantity]
else List.Sum(
Table.SelectRows(
#"Added Custom",
(row) => row[ID] = [ID] and row[sum_index] <= [sum_index]
)[quantity]
)),
#"Replaced Value" = Table.ReplaceValue(#"Added Custom1",null,0,Replacer.ReplaceValue,{"ID", "sum_index", "Custom"})
in
#"Replaced Value"
Then we will get the final output as below ( The results are in a different order than your screenshot, but the data results are the same ) :
Best Regards,
Dino Tao
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.
Please provide sample data that covers your issue or question completely, in a usable format (not as a screenshot).
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