how to append query without grabbing existing data

[FelipMark]

Hello everyone, I want to use the function to add queries, but without adding data that already correspond to the ID column so as not to duplicate information. Example:

Table 1:

DEAL_ID	ACCOUNT_ID	VALUE	ORIGIN_ID	PIPELINE_ID
1234	2233	100	2	5
5678	2233	500	2	6
9012	3344	600	1	5

Table 2:

DEAL_ID	CAMPAING_ID	VALUE	ADSET_ID
3333	8	80	2
1234	9	100	3
5678	6	300	1

Final result:

DEAL_ID	ACCOUNT_ID	VALUE	ORIGIN_ID	PIPELINE_ID	CAMPAING_ID	ADSET_ID
1234	2233	100	2	5	9	3
5678	2233	500	2	6	6	1
9012	3344	600	1	5	NULL	NULL
3333	NULL	80	NULL	NULL	8	2

[Vijay_A_Verma · Accepted solution]

Use this code for Table1

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WMjQyNlHSUTIyMjYGUoYGBiAOEJsqxepEK5mamVsgZE3hsmZgWUsDQxDH2NgEZIQZWNYQojcWAA==", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [DEAL_ID = _t, ACCOUNT_ID = _t, VALUE = _t, ORIGIN_ID = _t, PIPELINE_ID = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"DEAL_ID", Int64.Type}, {"ACCOUNT_ID", Int64.Type}, {"VALUE", Int64.Type}, {"ORIGIN_ID", Int64.Type}, {"PIPELINE_ID", Int64.Type}}),
    #"Merged Queries" = Table.NestedJoin(#"Changed Type", {"DEAL_ID"}, Table2, {"DEAL_ID"}, "Table2", JoinKind.FullOuter),
    #"Expanded Table2" = Table.ExpandTableColumn(#"Merged Queries", "Table2", {"DEAL_ID", "CAMPAING_ID", "VALUE", "ADSET_ID"}, {"DEAL_ID.1", "CAMPAING_ID", "VALUE.1", "ADSET_ID"}),
    Custom1 = Table.ReplaceValue(#"Expanded Table2", each [DEAL_ID], each [DEAL_ID]??[DEAL_ID.1], Replacer.ReplaceValue, {"DEAL_ID"}),
    Custom2 = Table.ReplaceValue(Custom1, each [VALUE], each [VALUE]??[VALUE.1], Replacer.ReplaceValue, {"VALUE"}),
    #"Removed Columns" = Table.RemoveColumns(Custom2,{"DEAL_ID.1", "VALUE.1"})
in
    #"Removed Columns"

[ToddChitt]

Do a FULL OUTER JOIN between the two tables. Expand the joined table and include all columns.

You will have some rows that exist in both tables (1234, 5678) and some that exist in only ONE table (9012) and some that exist only in the OTHER table (3333).

Now you need to create a calculated column that looks at the two resptive DEAL_ID fields and if null in one, use the other DEAL_ID.