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biengineer
Helper I
Helper I

Merge Queries: Rightouter - Mismatch Columns Null

Dear All,

 

Need your help.

 

Thanks in advance.

 

 

I am merging two tables based on Date, Line, Article using Right Outer,. Those not match with the first comes as null, I want the date, line, and style also from the second table for those do not match with the first.

 

 

 

biengineer_0-1664382556551.png

 

 

biengineer_2-1664382580361.png

 

3 ACCEPTED SOLUTIONS
biengineer
Helper I
Helper I

Suppose there are two columns in both tables, the second is Serial#. If I do right outer, vthe serial# should come into table 1 under Serial# along the value instead of nulls except expanded.

 

If there is any other way, please share.

 

Thanks in advance.

 

Regards 

 

 

View solution in original post

after nestedjoin, do like this, say the new merged column is "Merged"

=Table.FromRecords(List.TransformMany(Table.ToRecords(NestedJoinStep),each Table.ToRecords([Merged]),(x,y)=>Record.RemoveFields(x,{"Merged"})&y))

wdx223_Daniel_0-1664423794745.png

 

View solution in original post

no need addcolumn, just put the code in the new step

=Table.FromRecords(List.TransformMany(Table.ToRecords(#"Merged Packing"),each Table.ToRecords([Packing]),(x,y)=>Record.RemoveFields(x,{"Packing"})&y))

View solution in original post

16 REPLIES 16
wdx223_Daniel
Super User
Super User

can use other code to resolve this before you expand the table column

Sir, may you please explain the code you are talking about?

 

The idea is to have both tables in one table with all values with their respective columns values in second table whether match or mismatch.

 

Best regards 

after nestedjoin, do like this, say the new merged column is "Merged"

=Table.FromRecords(List.TransformMany(Table.ToRecords(NestedJoinStep),each Table.ToRecords([Merged]),(x,y)=>Record.RemoveFields(x,{"Merged"})&y))

wdx223_Daniel_0-1664423794745.png

 

Sir, here are the results. 

 

Looks weird.  I do not know what mistake I have made.

 

= Table.AddColumn(#"Merged Packing", "Custom", each Table.FromRecords(List.TransformMany(Table.ToRecords([Packing]),each Table.ToRecords([Packing]),(x,y)=>y&Record.RemoveFields(x,{"Packing"}))))

 

biengineer_0-1664425571365.png

 

= Table.AddColumn(#"Merged Packing", "Custom", each Table.FromRecords(List.TransformMany(Table.ToRecords([Packing]),each Table.ToRecords([Packing]),(x,y)=>y&Record.RemoveFields(x,{"Packing"}))))

no need addcolumn, just put the code in the new step

=Table.FromRecords(List.TransformMany(Table.ToRecords(#"Merged Packing"),each Table.ToRecords([Packing]),(x,y)=>Record.RemoveFields(x,{"Packing"})&y))

Dear sir,

 

The FuzzyNestedJoin worked well, I am applying this to fullouter and it misses the values from the First Table in Date and Art columns. 

 

biengineer_0-1664464198303.png

 

say, the two tables are tb1 and tb2,and tb1's values are prior to tb2, and changing the join kind to FullOuter, then try this

 

=let cols=List.Distinct(Table.ColumnNames(tb1)&Table.ColumnNames(tb2)) in #table(cols,List.TransformMany(Table.ToRecords(#"Merged Packing"),each Table.ToRecords([Packing]),(x,y)=>List.Transform(cols,each List.RemoveNulls(List.Transform({x,y},(x)=>Record.FieldOrDefault(x,_,null))){0}?)))

Dear Sir,

 

Looks like it is skipping Fuzzynestedjoin function, repeats the match, and creating duplicate values.

 

biengineer_0-1664647646542.png

 

Sir, this is perfect for Rightouter, I do not want to lose rows from either of the tables. How to do it with Fullouter?

biengineer
Helper I
Helper I

Suppose there are two columns in both tables, the second is Serial#. If I do right outer, vthe serial# should come into table 1 under Serial# along the value instead of nulls except expanded.

 

If there is any other way, please share.

 

Thanks in advance.

 

Regards 

 

 

It does. Look at the tables above. Bananas and Dates exist in both tables, so they came through. Any additional fields (expiration date, quantity on hand, etc.) would also come through. The only time you get null is when there is no match.

Please post examples of what you are doing using the directions below. thanks!

 

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Sir, you are right that nulls come with mismatch values, instead of nulls I need other columns from the second table for mismatched values

biengineer
Helper I
Helper I

With full outer, still gives all nulls except the values come from expansion. Very confused how to do it.

If there is no match, the only available result is null. 
Consider these tables:

edhans_0-1664385114807.png

This is how a full outer would look. What are you expecting?

edhans_1-1664385200388.png

 






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edhans
Super User
Super User

That would be an Anti-Join. 

edhans_0-1664382996661.png


You cannot do two types of joins at once. Perhaps you should do a FULL OUTER where everything comes in, then create another column with a series of if/then/else statements to return true/false to know what to keep, then filter on that column.



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Looks I need to follow Fullouter for all the tables to join with Table1, and create series of if statements.

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