我正在使用Postgres 9.5。我有下面的查询，旨在查找我的表中相同的数据行（但唯一的ID）。 select e.name,
e.day,
e.distance,
e.created_at,
e2.created_at
from events e,
events e2
where e.name = e2.name
and
我对SQL还比较陌生。我以前创建了一个视图，我试图删除该视图。视图名为Sales，db是'dbo'。我不断收到此错误： 消息4405，级别16，状态1，行1 视图或函数“dbo.Sales”不可更新，因为修改会影响多个基表。 我的代码是这样的： DELETE FROM [dbo].[Sales]
WHERE SOHNUM_0 IN ('SO004025', 'SO000942', 'SO0037
我有两个表 Person (contain oldest date (farthest in future) when person moved OR WILL moved to another address)
ID OLDESTADDRESSMOVEDATE
1 20161117
2 20171211
3 20160101
Address
delete from VA_demo_setup_NCSC_temp
where exists
(select *
from VA_demo_setup_enrolled va
where VA_demo_setup_NCSC_temp.student_id = va.student_id
and VA_demo_setup_NCSC_temp
如何从查询中引用的表中删除记录，例如，下面是我的查询，它返回了正确数量的结果，但我希望从中删除这些记录在查询中引用的同一个表。 ;with cte as (select *,
row_number() over (partition by c.[Trust Discharge], c.[AE Admission], c.[NHS Number]
order by c.[Hos
当我运行这行代码时。 DELETE from monthlyevaluatedbudgettable where budgetforyear = 2018;
它只是说在状态栏Query is Running.，我认为它不会结束，所以我会取消它，然后在错误日志的消息此警告后： ERROR: canceling statement due to user request
CONTEXT: SQL
2表： CREATE TABLE movie (
ID int PRIMARY KEY,
name varchar2(50) NOT NULL
);
CREATE TABLE length (
ID int PRIMARY KEY REFERENCES movie(ID) ON DELETE CASCADE,
length int NOT NULL