SQL> CREATE VIEW "[my_view]" as select ename, sal from emp where sal>2000;
CREATE从EMP VIEW “[my_view]” 作为选择的ename,SAL其中SAL> 2000 * ERROR位于第1行:ORA-01031:特权不足 SQL> select * from "[my_view]";
SELECT
我需要创建一个视图:employee_view CREATE VIEW employee_view (Name_of_employee, Name_of_PL, Name_of_manager)
AS
(
Need help here!
)
Raj is an employe
Vijay is a PL
Kumar is a manager
为视图列中的数据是从一个单一的柱来的表
我的模型看起来是这样的: class ComicSeries(models.Model):
"""Model definition for ComicSeries."""
# TODO: Define fields here
user = models.ForeignKey(User, on_delete=models.CASCADE,
nul
我有一个通用的CreateView来创建一个具有到另一个模型的ForeignKey的ModelInstance。用户通过点击其他模型DetailView上的链接到达那里。相反,用户选择ForeignKey的对象我想隐藏这个领域,并从URL中传递类似这样的ID预填充它: url(r'^t/(?P<pk>\d+)/add_r/$', ReceiptCreateForTask.as_view(), na
的MySQL创建视图:在Windows CREATE VIEW Foo as
select type from (select 8 as type UNION ALL select 9 as type) types;
的MySQL 5.7.11:作品,但MySQL的5.6.25-0ubuntu0.15.04.1(Ubuntu的):不工作。 View's SELECT contains a s