InstantRide Finance team wants to know the average discount amounts for each car in the InstantRide. Calculate the average discount amount as monetary value for the travels where a discount is applied. You need to create a subquery over the TRAVELS table to retrieve CAR_ID and DISCOUNT_AMOUNT, calculated with 2 decimals using the ROUND function. To calculate the DISCOUNT_AMOUNT, multiply the TRAVEL_PRICE by the TRAVEL_DISCOUNT where the TRAVEL_DISCOUNT value is not NULL. Round the result to 2 decimals. Then you can use this subquery to get the CAR_ID and AVG of DISCOUNT_AMOUNT values, once again using the ROUND function on the average results. Group the results by the CAR_ID. Use CAR_ID and DISCOUNT_AMOUNT as column aliases and return it back to the Finance team.
InstantRide Finance team wants to know the average discount amounts for each car in the InstantRide. Calculate the average discount amount as monetary value for the travels where a discount is applied. You need to create a subquery over the TRAVELS table to retrieve CAR_ID and DISCOUNT_AMOUNT, calculated with 2 decimals using the ROUND function. To calculate the DISCOUNT_AMOUNT, multiply the TRAVEL_PRICE by the TRAVEL_DISCOUNT where the TRAVEL_DISCOUNT value is not NULL. Round the result to 2 decimals. Then you can use this subquery to get the CAR_ID and AVG of DISCOUNT_AMOUNT values, once again using the ROUND function on the average results. Group the results by the CAR_ID. Use CAR_ID and DISCOUNT_AMOUNT as column aliases and return it back to the Finance team.
Chapter3: Performing Calculations With Formulas And Functions
Section: Chapter Questions
Problem 3.12CP
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Question
The InstantRide Finance team wants to know the average discount amounts for each car in the InstantRide. Calculate the average discount amount as monetary value for the travels where a discount is applied. You need to create a subquery over the TRAVELS table to retrieve CAR_ID and DISCOUNT_AMOUNT, calculated with 2 decimals using the ROUND function.
To calculate the DISCOUNT_AMOUNT, multiply the TRAVEL_PRICE by the TRAVEL_DISCOUNT where the TRAVEL_DISCOUNT value is not NULL. Round the result to 2 decimals.
Then you can use this subquery to get the CAR_ID and AVG of DISCOUNT_AMOUNT values, once again using the ROUND function on the average results. Group the results by the CAR_ID. Use CAR_ID and DISCOUNT_AMOUNT as column aliases and return it back to the Finance team.
Transcribed Image Text:CAR_ID
CAR_PLATE
CAR_MODEL
CAR_YEAR
1001
ВB-542-АB
TOYOTA PRIUS
2018
1002
ВB-883-EE
TESLA MODEL 3
2019
1003
BB-451-ZN
TOYOTA AURIS
2019
1004
BB-189-MM
MERCEDES E200
2019
Transcribed Image Text:TRAVEL_ID
TRAVEL_START TIME
TRAVEL END TIME
TRAVEL START LOCATION
TRAVEL_END_LOCATION
TRAVEL_PRICE
DRIVER_ID
CAR ID
USER_ID
TRAVEL DISCOUNT
5001
2019-10-01 04:04:55
2019-10-01 04:14:19
9614 York Road
84 Church Lane
15.44
2001
1003
3005
NULL
5002
2019-10-01 05:57:33
2019-10-01 06:12:33
47 Church Street
68 High Street
20.56
2001
1003
3006
NULL
5003
2019-10-01 13:35:20
2019-10-01 13:45:10
2 Windsor Road
95 West Street
12.32
2002
1001
3002
NULL
5004
2019-10-02 08:44:48
2019-10-02 09:15:28
9060 Mill Lane
27 Main Road
30.49
2003
1002
3001
0.13
5005
2019-10-02 16:38:54
2019-10-02 16:48:10
2 Queensway
24 Mill Lane
11.15
2001
1003
3007
NULL
5006
2019-10-03 19:12:14
2019-10-03 19:23:45
50 Main Road
93 Broadway
14.61
2003
1002
3007
0.10
5007
2019-10-03 16:06:36
2019-10-03 16:08:56
39 Park Road
91 West Street
4.41
2002
1004
3003
0.14
5008
2019-10-03 17:17:12
2019-10-03 17:37:42
37 The Drive
17 Stanley Road
25.12
2001
1003
3001
0.25
5009
2019-10-03 21:16:48
2019-10-03 21:26:18
77 Mill Road
724 Springfield Road
13.55
2001
1003
3005
NULL
5010
2019-10-03 23:21:40
2019-10-03 23:39:10
16 Church Road
30 North Road
25.62
2003
1002
3003
0.20
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