[CMT2][BUG] When there are same name in select statements, the target column name will be lost

1 In step3,input many sqls, two tables' name is same.
name sql
select Select * from code
count select count from code
select select 1&0
guanlian select a.agent_id, b.group_name from agent a,agent_group b where a.agent_grp_id = b.agent_grp_id
multis select agent_id from agent where agent_grp_id in (select agent_grp_id from agent_group where group_name ='Group1-Name')

2 Goto step5,there isn't any error.
3 Go back to step3,delete all sql3. then input the sql too.
name sql
select Select * from code
count select count from code
select select 1&0
guanlian select a.agent_id, b.group_name from agent a,agent_group b where a.agent_grp_id = b.agent_grp_id
multis select agent_id from agent where agent_grp_id in (select agent_grp_id from agent_group where group_name ='Group1-Name')
4 Goto step4, click next, the second table will lost the target column.