insert select 执行时间超过2小时
insert into tableABCD
select distinct cast(ct.USER_ID as char) as USER_ID
from datumdb.dwa_grp_mem_info_d_20211031 dgmid
join datumdb.dwa_grp_mem_use_info_m_202110 ct
on cast(ct.GROUP_ID as char) = cast(dgmid.GROUP_ID as char);