Virtual Table by UNION of two other tables

[stribor45]

I am trying to create a virtual table but I think I am having syntax issues. can someone correct this into a working DAX code please

T1 = ALL(tableA[col1],tableA[col2]),

T2 = ALL(tableB[col1],tableB[col2]),

return UNION(T1,T2)

[stribor45 · Accepted solution]

That did not work for me but this did

My Table = 

VAR T1 = SUMMARIZE('TableA','TableA'[Call_ID])
VAR T2 = SUMMARIZE('TableB','TableB'[Call_ID])
RETURN UNION(T1,T2)

[jdbuchanan71]

ALL(tableA[col1],tableA[col2])
UNION
ALL(tableB[col1],tableB[col2])