一条SQL语句怎么放在VB里面？
select *
from(select phone=m_phone,mname from custom
union all
select m_mobile,mname from custom
union all
select f_phone,fname from custom
union all
select f_mobile,fname from custom
union all
select * from other
)K
where phone=''
这条怎么放在VB里面？如：
sql="............................."
