我正在使用Postgres 9.5。我有下面的查詢，旨在查找我的表中相同的數據行（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
我對SQL還比較陌生。我以前創建了一個視圖，我試圖刪除該視圖。視圖名爲Sales，db是'dbo'。我不斷收到此錯誤： 消息4405，級別16，狀態1，行1 視圖或函數「dbo.Sales」不可更新，因爲修改會影響多個基表。 我的代碼是這樣的： DELETE FROM [dbo].[Sales]
WHERE SOHNUM_0 IN ('SO004025', 'SO000942', 'SO0037
我有兩個表 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
如何從查詢中引用的表中刪除記錄，例如，下面是我的查詢，它返回了正確數量的結果，但我希望從中刪除這些記錄在查詢中引用的同一個表。 ;with cte as (select *,
row_number() over (partition by c.[Trust Discharge], c.[AE Admission], c.[NHS Number]
order by c.[Hos
當我運行這行代碼時。 DELETE from monthlyevaluatedbudgettable where budgetforyear = 2018;
它只是說在狀態欄Query is Running.，我認爲它不會結束，所以我會取消它，然後在錯誤日誌的消息此警告後： 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