PPT
PPT
文
文
档
档
演
演
模
模
板
板
Office
Office
PPT
PPT
SELECT
SELECT:
作用:
根据WHERE条件从表,视图,SNAPSHOT中获取数据。
语法:
select
distinct(all default) column_name(expt,*)
from
table(view,snapshot,subquery[select list])@dblink
where
(start with condition)(connect by condition)
group by expr (having condition) union (union all,minus,intersect)
order by (expr,position,c_alias) asc(desc)
for update of (table,view snapshot) column nowait
ORACLE数据库简介