Skip to main content
cancel
Showing results for 
Search instead for 
Did you mean: 

Earn the coveted Fabric Analytics Engineer certification. 100% off your exam for a limited time only!

Reply

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


@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?

 

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 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.

Helpful resources

Announcements
April AMA free

Microsoft Fabric AMA Livestream

Join us Tuesday, April 09, 9:00 – 10:00 AM PST for a live, expert-led Q&A session on all things Microsoft Fabric!

March Fabric Community Update

Fabric Community Update - March 2024

Find out what's new and trending in the Fabric Community.