摘要: SQL: ALTER TABLE Statement The ALTER TABLE statement allows you to rename an existing table. It can also be used to add, modify, or drop a column f... 阅读全文
posted @ 2012-08-09 09:32 BiG5 阅读(249) 评论(0) 推荐(0)
摘要: 修改表的例子: Examples Add a column to a table ALTER TABLE STAFF_OPTIONS ADD SO_INSURANCE_PROVIDER Varchar2(35);Add a default value to a column ... 阅读全文
posted @ 2012-08-09 09:30 BiG5 阅读(171) 评论(0) 推荐(0)