Forum Discussion
Append and add rows with data if not found
Hi - I posted the other day and realized my target was unclear!
I want to append a row if not found, pull data over from Tables and add a flag column.
I have two tables, one with required values at a minimum for, and one with a Unique Variable + obtained values -- The Unique Variable MUST have all "fruits" for the Group + Time, if the unique variable does not contain the requried value(s), I would like to append a row with the Unique ID + Missing values along with a Flaged column.
Table 1 (required values)
| Group | Time | Fruit |
| High | 5 | Banana |
| High | 5 | Orange |
| Low | 3 | Watermelon |
| Low | 3 | Banana |
| High | 4 | Banana |
Table 2 (Obtained Values):
| UniqueID | Group | Time | Fruit |
| A64 | High | 5 | Banana |
| B32 | High | 5 | Orange |
| B34 | Low | 3 | Watermelon |
| C64 | High | 4 | Banana |
Table 3: Desired Output -- Append with Unique ID + expected Group/Time/Fruit and Flag. Font color to show what I would like to append
| UniqueID | Group | Time | Fruit | Flag |
| A64 | High | 5 | Banana | True |
| A64 | High | 5 | Orange | Missing |
| B32 | High | 5 | Banana | Missing |
| B32 | High | 5 | Orange | True |
| B34 | Low | 3 | Watermelon | True |
| B34 | Low | 3 | Banana | Missing |
| C64 | High | 4 | Banana | True |
Hi Quemi ,
How about this:
Here the code in Power Query M that you can paste into the advanced editor (if you do not know, how to exactly do this, please check out this quick walkthrough)
let Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45W8shMz1DSUTIFYqfEPCBUitVBEfUvSsxLTwWL+uSXAwWMgTg8sSS1KDc1Jz8PWUIBqyEmSKKxAA==", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Group = _t, Time = _t, Fruit = _t]), #"Changed Type" = Table.TransformColumnTypes(Source,{{"Group", type text}, {"Time", Int64.Type}, {"Fruit", type text}}), #"Merged Queries" = Table.NestedJoin(#"Changed Type", {"Group", "Time"}, Table16b, {"Group", "Time"}, "Table16b", JoinKind.LeftOuter), #"Expanded Table16b" = Table.ExpandTableColumn(#"Merged Queries", "Table16b", {"UniqueID", "Group", "Time", "Fruit"}, {"Table16b.UniqueID", "Table16b.Group", "Table16b.Time", "Table16b.Fruit"}), #"Added Custom" = Table.AddColumn(#"Expanded Table16b", "Flag", each if [Fruit] = [Table16b.Fruit] then "True" else "missing"), #"Reordered Columns" = Table.ReorderColumns(#"Added Custom",{"Table16b.UniqueID", "Group", "Time", "Fruit", "Flag", "Table16b.Group", "Table16b.Time", "Table16b.Fruit"}), #"Removed Columns" = Table.RemoveColumns(#"Reordered Columns",{"Table16b.Group", "Table16b.Time", "Table16b.Fruit"}) in #"Removed Columns"Let me know if this solves your issue 🙂
/Tom
https://www.tackytech.blog/
https://www.instagram.com/tackytechtom/Hi Quemi ,
I am glad I could help! Do not forget to mark the answer as a solution, so people can find it quicker in future 🙂
Regarding your question, it is something that Power BI creates anytime you add data via the "enter data" function. Here more on this:
Power Query Enter Data Explained. There are many things you do so often… | by Nolock | Medium
/Tom
https://www.tackytech.blog/
https://www.instagram.com/tackytechtom/
3 Replies
Hi Quemi ,
How about this:
Here the code in Power Query M that you can paste into the advanced editor (if you do not know, how to exactly do this, please check out this quick walkthrough)
let Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45W8shMz1DSUTIFYqfEPCBUitVBEfUvSsxLTwWL+uSXAwWMgTg8sSS1KDc1Jz8PWUIBqyEmSKKxAA==", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [Group = _t, Time = _t, Fruit = _t]), #"Changed Type" = Table.TransformColumnTypes(Source,{{"Group", type text}, {"Time", Int64.Type}, {"Fruit", type text}}), #"Merged Queries" = Table.NestedJoin(#"Changed Type", {"Group", "Time"}, Table16b, {"Group", "Time"}, "Table16b", JoinKind.LeftOuter), #"Expanded Table16b" = Table.ExpandTableColumn(#"Merged Queries", "Table16b", {"UniqueID", "Group", "Time", "Fruit"}, {"Table16b.UniqueID", "Table16b.Group", "Table16b.Time", "Table16b.Fruit"}), #"Added Custom" = Table.AddColumn(#"Expanded Table16b", "Flag", each if [Fruit] = [Table16b.Fruit] then "True" else "missing"), #"Reordered Columns" = Table.ReorderColumns(#"Added Custom",{"Table16b.UniqueID", "Group", "Time", "Fruit", "Flag", "Table16b.Group", "Table16b.Time", "Table16b.Fruit"}), #"Removed Columns" = Table.RemoveColumns(#"Reordered Columns",{"Table16b.Group", "Table16b.Time", "Table16b.Fruit"}) in #"Removed Columns"Let me know if this solves your issue 🙂
/Tom
https://www.tackytech.blog/
https://www.instagram.com/tackytechtom/This works, thank you so much!!!
Super new power query user (recently changed from a mac), most of the code makes sense, but for future info - what does the binary from text mean --> how is the FromText("145...A==") derived ?
Hi Quemi ,
I am glad I could help! Do not forget to mark the answer as a solution, so people can find it quicker in future 🙂
Regarding your question, it is something that Power BI creates anytime you add data via the "enter data" function. Here more on this:
Power Query Enter Data Explained. There are many things you do so often… | by Nolock | Medium
/Tom
https://www.tackytech.blog/
https://www.instagram.com/tackytechtom/
