Question

我遇到了以下问题，我有四张桌子：

CREATE TABLE Customer(
customer_id DECIMAL(10) NOT NULL,
customer_first VARCHAR(30),
customer_last VARCHAR(40),
customer_total DECIMAL(12, 2),
PRIMARY KEY (customer_id));

CREATE TABLE Item(
item_id DECIMAL(10) NOT NULL,
item_description VARCHAR(30),
item_price DECIMAL(10),
PRIMARY KEY (item_id));

CREATE TABLE Customer_order (
order_id DECIMAL(10) NOT NULL,
customer_id DECIMAL(10) NOT NULL,
order_total DECIMAL(12,2),
order_date DATE,
PRIMARY KEY (order_id),
FOREIGN KEY (customer_id) REFERENCES customer);

CREATE TABLE Order_line(
order_id DECIMAL(10) NOT NULL,
item_id DECIMAL(10) NOT NULL,
item_quantity DECIMAL(10) NOT NULL,
line_price DECIMAL(12,2),
PRIMARY KEY (order_id, item_id),
FOREIGN KEY (order_id) REFERENCES Customer_order,
FOREIGN KEY (item_id) REFERENCES Item);

这是我输入的示例数据：

INSERT INTO Customer values(1,'John','Smith',0);
INSERT INTO Customer values(2,'Mary','Berman',0);
INSERT INTO Customer values(3,'Elizabeth','Johnson',0);
INSERT INTO Customer values(4,'Peter','Quigley',0);
INSERT INTO Customer values(5,'Stanton','Hurley',0);
INSERT INTO Customer values(6,'Yvette','Presley',0);
INSERT INTO Customer values(7,'Hilary','Marsh',0);

INSERT INTO Item values(1,'Plate',10);
INSERT INTO Item values(2,'Bowl',11);
INSERT INTO Item values(3,'Knife',5);
INSERT INTO Item values(4,'Fork',5);
INSERT INTO Item values(5,'Spoon',5);
INSERT INTO Item values(6,'Cup',12);

INSERT INTO Customer_order values(1,1,506,CAST('18-DEC-2003' AS DATE));
INSERT INTO Customer_order values(2,1,1000,CAST('17-DEC-2003' AS DATE));
INSERT INTO Customer_order values(3,3,15,CAST('18-DEC-2003' AS DATE));
INSERT INTO Customer_order values(4,3,15,CAST('19-DEC-2003' AS DATE));
INSERT INTO Customer_order values(5,2,1584,CAST('20-DEC-2003' AS DATE));
INSERT INTO Customer_order values(6,4,100,CAST('21-DEC-2003' AS DATE));
INSERT INTO Customer_order values(7,5,40,CAST('22-DEC-2003' AS DATE));
INSERT INTO Customer_order values(8,1,100,CAST('23-DEC-2003' AS DATE));

INSERT INTO Order_line values(1,1,10,100);
INSERT INTO Order_line values(1,5,2,10);
INSERT INTO Order_line values(1,2,36,396);
INSERT INTO Order_line values(2,1,95,950);
INSERT INTO Order_line values(2,3,10,50);
INSERT INTO Order_line values(3,4,3,15);
INSERT INTO Order_line values(4,4,3,15);
INSERT INTO Order_line values(5,6,132,1584);
INSERT INTO Order_line values(6,1,10,100);
INSERT INTO Order_line values(7,5,5,25);
INSERT INTO Order_line values(7,4,3,15);

我需要显示发票的订单行信息。结果必须包含物料描述，价格，数量和订单行总数（数量乘以价格）。为了简化，让我将结果限制为order_id = 1.

已经完成了很多教程。我正在尝试旧样式和新ANSI，但总是遇到不同的错误。

这些是我的尝试：

select item_description, item_price, order_id, item_quantity
from customer_order
inner join item on item_id=1
inner join order_line on item_id=1;
inner join order_line on item_id=1
                         *
ERROR at line 4:
ORA-00918: column ambiguously defined

或者像这样：

select item_description, item_price, order_id, item_quantity 
from item 
    natural join order_line 
       where item_id=1 
       natural join
       customer_order where item_id=1                                                                                                         
*
ERROR at line 1:
ORA-00933: SQL command not properly ended

通过Oracle SQL 11g提取信息并加入三个表

0 个答案: