mysql纵列转横列

sql 超级无敌纵列转横列

select GROUP_CONCAT(bb)
from (
select 1 as aa,concat(
               substr(f_start_time, 1, 2), ':', substr(f_start_time, 3, 2),
               '-',
               substr(f_end_time, 1, 2), ':', substr(f_end_time, 3, 2), ':', f_elec_price) bb
from fp_pile_station.t_charge_policy
where f_equipment_id = '1101010000200302'
  and f_yn = 1) t group by t.aa;