Oracle Create Table：
ps:
- dual: A mystery table in Oracle, You can select many things from this
table:Select a_squence_name.nextval from dual
- Select into from: A copy operation on oracle.You can use it like
this:SELECT * INTO new_table_name [IN
externaldatabase] FROM old_tablename
主键自增长表,布布扣,bubuko.com
主键自增长表
原文：http://www.cnblogs.com/henyihanwobushi/p/3584117.html
