Summarize after union table

[Davidmei]

I have an Union new Table.

Bit after this i would to summarize the union result again 

UNION(

    SUMMARIZE(TABLE1

    TABLE1[Key],TABLE1[EKORG],TABLE1[LIFNR],TABLE1[Jahr],

    "SUM_R_NETW",sum(TABLE1[SUM_R_NETW]),

    "SUM_B_NETW",sum(TABLE1[SUM B_NETW])

    )

,

    SUMMARIZE(TABLE2,

    TABLE2[Key],TABLE2[EKORG],TABLE2[LIFNR],TABLE2[INV Year],

    "SUM_R_NETW",sum(TABLE2[SUM_R_NETW]),

    "SUM_B_NETW",0

But found no solution

    )

[amitchandak · Accepted solution]

@Davidmei , In this case group by can be better solution

https://medium.com/@amitchandak/power-bi-power-query-vs-dax-append-and-summarize-data-233f173d0839