Need to create union in Power BI

[asdf1608]

I need ti union two tables from SQL Server in power BI. But the issue is that the number of columns are not same for both the tables. So union()/concadenate() is not possible in Power BI.

So I tried the append and connected to Database.

It is good but the values are wrong. 

So there any other ways to union these two tables in Power BI

[v-yueyunzh-msft · Accepted solution]

Hi, @asdf1608 

According to your description, you want to union the two tables which has differnt column names.

Here are the steps you can refer to :
This is my test data:

[1]We can crealize it in Power Query Editor. we can create a Blank Query and enter this:

= Table.RenameColumns(#"Table 2",{{"Stu_Name", "Name"}, {"Class_Name", "Class"}}) & #"Table 1"

Then we can get this and you can also remove the column you do not want to in it :

[2]We can also realize it in Power Bi Desktop:
We can click "New Table" and enter this:

Table = UNION( SELECTCOLUMNS( ADDCOLUMNS('Table 2',"Teacher", BLANK()) ,"Name",[Stu_Name],"Class",[Class_Name],"Source",[Source],"Teacher",[Teacher]) , 'Table 1')

Then we can also meet your need:

Thank you for your time and sharing, and thank you for your support and understanding of PowerBI! 

Best Regards,

Aniya Zhang

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