我正在尝试从Vehicles表中获取vehicle_Code，这是一个不同品牌和型号组合的序号。车辆表的描述是品牌和型号连接。 Sales表中的VIN与OTLP_Vehicles表的品牌和型号对齐。我不确定如何修改我的JOIN并可能添加一个WHERE子句来获取vehicle_Code。
这是我目前的剧本：
SELECT sale_date,vehicle_Code,sf.plan_ID,dealer_ID,
COUNT (*) AS vehicles_sold,
SUM (s.gross_sale_price) AS gross_sales_amt
FROM Sales s
INNER JOIN Sales_Financings sf
on sf.sale_ID = s.sale_ID
GROUP BY sale_date, vehicle_Code, sf.plan_ID, dealer_ID;
描述我需要用于vehicle_Code的表格：
SQL> desc Sales
Name Null? Type
----------------------------------------- -------- ----------------------------
SALE_ID NOT NULL VARCHAR2(10)
SALESPERSON_ID NOT NULL VARCHAR2(10)
CUST_ID NOT NULL VARCHAR2(10)
SALE_DATE DATE
VIN NOT NULL VARCHAR2(20)
MILEAGE NUMBER(38)
VEHICLE_STATUS VARCHAR2(15)
GROSS_SALE_PRICE NOT NULL NUMBER(8,2)
DEALER_ID VARCHAR2(5)
VEHICLE_CODE VARCHAR2(10)
SQL> desc Vehicles
Name Null? Type
----------------------------------------- -------- ----------------------------
VEHICLE_CODE NOT NULL VARCHAR2(10)
DESCRIPTION VARCHAR2(100)
SQL> desc OLTP_Vehicles
Name Null? Type
----------------------------------------- -------- ----------------------------
VIN NOT NULL VARCHAR2(20)
TRADE_ID NOT NULL VARCHAR2(10)
TYPE VARCHAR2(10)
MAKE VARCHAR2(15)
MODEL VARCHAR2(15)
WHERE_FROM VARCHAR2(30)
WHOLESALE_COST NOT NULL NUMBER(8,2)
以下是数据的子集：
SQL> SELECT * FROM Vehicles;
VEHICLE_CODE DESCRIPTION
--------------- ------------------------------
1 Ford, Fiesta
2 Chevrolet, Tahoe
3 Chevrolet, Colorado
4 Ford, Taurus
5 Ford, F-150
6 Chevrolet, Silverado
7 Ford, Focus
8 Dodge, Charger
9 Dodge, Challenger
10 Chevrolet, Suburban
11 Ford, Expedition
VEHICLE_CODE DESCRIPTION
--------------- ------------------------------
12 Ford, F-350
13 Dodge, Dakota
14 Ford, Edge
15 Dodge, Durango
16 Ford, F-250
17 Chevrolet, Corvette
18 Ford, Fusion
19 Dodge, Ram
20 Chevrolet, Impala
21 Chevrolet, Malibu
22 Chevrolet, Camaro
VEHICLE_CODE DESCRIPTION
--------------- ------------------------------
23 Chevrolet, Camaro
23 rows selected.
SQL> Select * From OLTP_Vehicles;
VIN TRADE_ID TYPE MAKE MODEL WHERE_FROM WHOLESALE_COST
-------------------- ---------- ---------- --------------- --------------- -------------------- ---------------
98765432FV87654321V0 9009009000 Truck Chevrolet Silverado Washington, DC $45,000.00
25667894FC36948523V8 9009009001 Car Ford Fusion Virginia $14,000.00
95786985HC58635889C2 9009009002 Car Chevrolet Camaro Maryland $35,000.00
95678234FV53375329V5 9009009003 Truck Dodge Ram Maryland $35,000.00
93678247HC45852485F5 9009009004 Truck Dodge Dakota Washington, DC $25,000.00
25786785HV45785547T4 9009009005 Car Ford Focus Washington, DC $15,000.00
27894578FC56778852C5 9009009006 Truck Chevrolet Silverado Virginia $9,000.00
93678574HV45886348V5 9009009007 Car Ford Fiesta Maryland $13,000.00
68975324HF45885337C6 9009009008 Car Dodge Charger Washington, DC $35,000.00
98768859HC58785672H2 9009009009 Truck Chevrolet Colorado Washington, DC $20,000.00
96587453GH45772535C1 9009009010 Truck Chevrolet Silverado Virginia $40,000.00
SQL> Select * From Sales;
SALE_ID SALESPERSO CUST_ID SALE_DATE VIN MILEAGE VEHICLE_STATUS GROSS_SALE_PRICE DEALE VEHICLE_CODE
---------- ---------- ---------- --------- -------------------- ---------- --------------- ---------------- ----- ---------------
3000001000 6000000600 1000100000 17-FEB-28 98765432FV87654321V0 0 New $55,000.00 D0001
3000001001 6000000601 1000100100 17-MAR-13 25667894FC36948523V8 25000 Used $24,000.00 D0002
3000001002 6000000602 1000100200 17-MAY-02 95786985HC58635889C2 4 New $45,000.00 D0003
3000001003 6000000603 1000100300 17-JUN-10 95678234FV53375329V5 3 New $45,000.00 D0001
3000001004 6000000604 1000100400 17-JAN-09 93678247HC45852485F5 45666 Used $35,000.00 D0002
3000001005 6000000605 1000100500 17-DEC-12 25786785HV45785547T4 0 New $25,000.00 D0003
3000001006 6000000606 1000100600 17-NOV-31 27894578FC56778852C5 174000 Used $19,000.00 D0001
3000001007 6000000607 1000100700 17-OCT-25 93678574HV45886348V5 1 New $23,000.00 D0002
3000001008 6000000608 1000100800 17-AUG-22 68975324HF45885337C6 15 New $45,000.00 D0003
3000001009 6000000609 1000100900 17-JUL-01 98768859HC58785672H2 35000 Used $30,000.00 D0001
3000001010 6000000600 1000100000 17-JUL-01 96587453GH45772535C1 3 New $50,000.00 D0002
答案 0 :(得分：0)
理论上，这可以使用连接来完成。
SELECT
* --INSERT YOUR COLUMNS
FROM
Sales s
INNER JOIN
OLTP_Vehicles OV ON OV.VIN = s.VIN
INNER JOIN
Vehicles V ON CONCAT(OV.MAKE, ', ',OV.MODEL) = V.DESCRIPTION
如果有效，请告诉我。
这是使用PostGreSQL
的DB小提琴