bit_count

select count(distinct uid) from month_visit_user_3g_201206 where (login_days_client & (b'1111111' << 23)) !=0;

select count(distinct uid) from client_month_visit_user_201206 where (login_days & (b'1111111' << 23)) !=0;

select count(distinct uid) from month_visit_user_3g_201206 where bit_count(login_days_client) >0;

select count(distinct uid) from client_month_visit_user_201206 where bit_count(login_days) >0;