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我對SQL很陌生,我正在查詢我輸入的數據,以查找Danmurphys出售的少於20美元的葡萄酒。我編寫的查詢是在底部,但語法不正確,我不知道我在做什麼錯。SQL聯繫查詢
任何幫助你可以提供給我的將非常感謝!
CREATE TABLE Retailer
(RETAIL_ID NVARCHAR(4) NOT NULL,
RETAIL_NAME NVARCHAR(30) NOT NULL,
PRIMARY KEY (RETAIL_ID));
CREATE TABLE Wine
(WINE_ID NVARCHAR(3) NOT NULL,
WINE_NAME NVARCHAR(30) NOT NULL,
WINE_VINT NVARCHAR(4) NOT NULL,
PRIMARY KEY(WINE_ID));
CREATE TABLE Dist
(RETAIL_ID NVARCHAR(4) NOT NULL,
WINE_ID NVARCHAR(3) NOT NULL,
WINE_PRICE DECIMAL(6,2) NOT NULL,
CONSTRAINT PK_Dist PRIMARY KEY
(
RETAIL_ID,
WINE_ID
),
FOREIGN KEY (RETAIL_ID) REFERENCES Retailer (RETAIL_ID),
FOREIGN KEY (WINE_ID) REFERENCES Wine (WINE_ID));
INSERT INTO Wine VALUES('101','Grange','2010');
INSERT INTO Wine VALUES('102','Grange','2006');
INSERT INTO Wine VALUES('103','Reserve Shiraz','2013');
INSERT INTO Wine VALUES('104','Grey Label Shiraz','2012');
INSERT INTO Wine VALUES('105','Patricia Shiraz','2009');
INSERT INTO Wine VALUES('106','Ten Acres Shiraz','2012');
INSERT INTO Wine VALUES('107','Double Barrel Shiraz','2012');
INSERT INTO Wine VALUES('108','Platinum Label Shiraz','2006');
INSERT INTO Retailer VALUES('1001', 'Dan Murphys');
INSERT INTO Retailer VALUES('1002', 'Woolworths');
INSERT INTO Dist VALUES('1001','101','750');
INSERT INTO Dist VALUES('1001','102','700');
INSERT INTO Dist VALUES('1001','103','10');
INSERT INTO Dist VALUES('1001','104','35');
INSERT INTO Dist VALUES('1001','105','50');
INSERT INTO Dist VALUES('1001','106','25');
INSERT INTO Dist VALUES('1001','107','15');
INSERT INTO Dist VALUES('1001','108','170');
INSERT INTO Dist VALUES('1002','103','9');
INSERT INTO Dist VALUES('1002','104','33');
INSERT INTO Dist VALUES('1002','105','44');
SELECT DISTINCT Wine.WINE_NAME, Wine.WINE_VINT, Dist.WINE_PRICE
FROM Wine
WHERE WINE_PRICE < 20
INNER JOIN Dist ON Wine.WINE_ID = Dist.RETAIL_ID
INNER JOIN Wine on Dist.RETAIL_ID = Retailer.RETAIL_ID
WHERE retailer.RETAIL_NAME = 'danmurphys'
謝謝詹姆斯,這真棒隊友! –
@MichaelHiggon,我的榮幸! –