选择栏这是另一种表列value.what不对的查询选择这是另一个表列值
select
geoName
from
hgeo h
where
geoName not in (select (select column_name
from information_schema.columns
where ((column_name = h.levelName) and (table_Name = 'flatgeo')))
from flatgeo)
我认为有一些问题
(select
(select column_name
from information_schema.columns
where ((column_name = h.levelName) and (table_Name = 'flatgeo')))
怎么写专栏?
更容易阅读,比较容易回答。 –
你想做什么? – Bridge