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How can I append or merge two tables with different number of columns?

How can I append or merge two tables with different number of columns?

 

I  know theres a straightforward way to do it which is in Advace Query Editor using 'Append' funcitonality but correct me If I am wrong, performance will suffer if I'll do it that way. I notice its takes so much time refreshing the data whenever I made my changs in advance query editor. 

 

I was thinking if theres a way in doing it using PBI DAX, the report will refresh or load faster.

 

Any thoughts please? Thanks in advance!

1 ACCEPTED SOLUTION

Accepted Solutions
Microsoft Eric_Zhang
Microsoft

Re: How can I append or merge two tables with different number of columns?


@junyetzotomayor wrote:

How can I append or merge two tables with different number of columns?

 

I  know theres a straightforward way to do it which is in Advace Query Editor using 'Append' funcitonality but correct me If I am wrong, performance will suffer if I'll do it that way. I notice its takes so much time refreshing the data whenever I made my changs in advance query editor. 

 

I was thinking if theres a way in doing it using PBI DAX, the report will refresh or load faster. I tried UNION but its thrwoing an error since I have different number of columns. 

 

Any thoughts please? Thanks in advance!


@junyetzotomayor

Both way in Power Query or in DAX.

Table =
UNION (
    SELECTCOLUMNS ( Table1, "column1", Table1[column1], "column2", Table1[column2] ),
    SELECTCOLUMNS ( Table2, "column1", Table2[Column1], "column2", Table2[Column4] )
)

By the way, how much data in your case? I'd doubt you'll still experience performance issue if the data is too huge.

View solution in original post

2 REPLIES 2

How can I append or merge two tables with different number of columns?

How can I append or merge two tables with different number of columns?

 

I  know theres a straightforward way to do it which is in Advace Query Editor using 'Append' funcitonality but correct me If I am wrong, performance will suffer if I'll do it that way. I notice its takes so much time refreshing the data whenever I made my changs in advance query editor. 

 

I was thinking if theres a way in doing it using PBI DAX, the report will refresh or load faster. I tried UNION but its thrwoing an error since I have different number of columns. 

 

Any thoughts please? Thanks in advance!

Microsoft Eric_Zhang
Microsoft

Re: How can I append or merge two tables with different number of columns?


@junyetzotomayor wrote:

How can I append or merge two tables with different number of columns?

 

I  know theres a straightforward way to do it which is in Advace Query Editor using 'Append' funcitonality but correct me If I am wrong, performance will suffer if I'll do it that way. I notice its takes so much time refreshing the data whenever I made my changs in advance query editor. 

 

I was thinking if theres a way in doing it using PBI DAX, the report will refresh or load faster. I tried UNION but its thrwoing an error since I have different number of columns. 

 

Any thoughts please? Thanks in advance!


@junyetzotomayor

Both way in Power Query or in DAX.

Table =
UNION (
    SELECTCOLUMNS ( Table1, "column1", Table1[column1], "column2", Table1[column2] ),
    SELECTCOLUMNS ( Table2, "column1", Table2[Column1], "column2", Table2[Column4] )
)

By the way, how much data in your case? I'd doubt you'll still experience performance issue if the data is too huge.

View solution in original post

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