select * from (
select top 3 * from zz_url where sortid=1 and city='中山'
union all
select * from (
select top 3 * from zz_url where sortid=1 and city='深圳' order by newid()
)a
)
追加随机记录
select * from (
select top 3 * from zz_url where sortid=1 and city='中山'
union all
select * from (
select top 3 * from zz_url where sortid=1 and city='深圳' order by newid()
)a
)
追加随机记录