cql3: select_statement: use result_generator if possible
cql3: select_statement: use result_generator if possible

avikivity/scylla,duarten/scylla,scylladb/scylla,avikivity/scylla,duarten/scylla,scylladb/scylla,duarten/scylla,scylladb/scylla,scylladb/scylla,avikivity/scylla