@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.
