A.create table new_table as (select *from old_table);B.create table new_table as select *from old_table where 1=1;C.create table new_table as select *from old_table;D.create table new_table as select from old_table where 1=1;
A.創(chuàng)建、查看表空間B.修改、刪除表空間C.查看、修改系統(tǒng)參數(shù)D.oracle數(shù)據(jù)庫(kù)打開,關(guān)閉
A.alter table old_table rename new_table;B.alter table old_table rename to new_table;C.rename old_table to new_table;D.rename old_table new_table;