def dnsdomain_get_all(context):
    return IMPL.dnsdomain_get_all(context)
>>> make_union(["SELECT * from A", "SELECT * from B"])
dataset/ETHPy150Open BU-NU-CLOUD-SP16/Trusted-Platform-Module-nova/nova/db/api.py/dnsdomain_get_all--crossover with--dataset/ETHPy150Open opennode/nodeconductor/nodeconductor/monitoring/zabbix/sql_utils.py/make_union