admin管理员组

文章数量:1559093

problem

you wish to prevent users, or an errant software application, from inserting values into certain table columns. for example, you wish to allow a program to insert into emp, but only into the empno, ename, and job columns.

solution

create a view on the table exposing only those columns you wish to expose. then force all inserts to go through that view.

for example, to create a view exposing the three columns in emp:

	create view new_emps as
	select empno, ename, job
	  from emp

it is also possible, but perhaps less useful, to insert into an inline view (currently only supported by oracle):

	insert into
	  (select empno, ename, job
	     from emp)
	values (1, 'jonathan', 'editor')

来自 “ itpub博客 ” ，链接：http://blog.itpub/23895263/viewspace-681055/，如需转载，请注明出处，否则将追究法律责任。

转载于:http://blog.itpub/23895263/viewspace-681055/

本文标签：

j9九游会老哥俱乐部交流区的版权声明：本文标题：recipe 4.7. blocking inserts to certain columns 内容由热心网友自发贡献，该文观点仅代表作者本人， 转载请联系作者并注明出处：https://www.elefans.com/dongtai/1727341484a1109466.html， 本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。如发现本站有涉嫌抄袭侵权/违法违规的内容，一经查实，本站将立刻删除。