Sql 用于添加带有外键的相同列条目的查询
我有下表和属性:Sql 用于添加带有外键的相同列条目的查询,sql,oracle11g,Sql,Oracle11g,我有下表和属性: vendor_invoicedetails Venid(Pk) ven_inv_ref(Fk) Item_Code Item_Name UnitPrice VenQuantity 我想用VenQuantity乘以unitPrice,得到我在以下查询中得到的总价 select item_code, VEN_INV_REF, unitprice * ven_itemquantity as total from
vendor_invoicedetails
Venid(Pk)
ven_inv_ref(Fk)
Item_Code
Item_Name
UnitPrice
VenQuantity
VenQuantity
乘以unitPrice
,得到我在以下查询中得到的总价
select item_code,
VEN_INV_REF,
unitprice * ven_itemquantity as total
from vendor_invoicedetails;
TotalPrice
相加为两个相同的veninv\u Ref(Fk)
列的总和DECLARE @datatable TABLE
(
ITEM_CODE NVARCHAR(32) PRIMARY KEY CLUSTERED,
ven_inv_ref NVARCHAR(50),
Item_Name NVARCHAR(50),
UnitPrice FLOAT,
VenQuantity INT
)
INSERT INTO @datatable
(ITEM_CODE, ven_inv_ref, UnitPrice, VenQuantity)
VALUES ('battery', 15, 100, 4)
INSERT INTO @datatable
(ITEM_CODE, ven_inv_ref, UnitPrice, VenQuantity)
VALUES ('ABCDE', 16, 200, 4)
INSERT INTO @datatable
(ITEM_CODE, ven_inv_ref, UnitPrice, VenQuantity)
VALUES ('A4', 16, 400, 4)
-- whats in the table
SELECT *
FROM @datatable
-- group by reference
SELECT
ven_inv_ref,
SUM(UnitPrice*VenQuantity) AS totalvalue
FROM @datatable
GROUP BY ven_inv_ref
结果