AdventureWorks Database: Display the list price as a comment based on the price range
127. From the following table write a query in SQL to display the list price as a text comment based on the price range for a product. Return ProductNumber, Name, and listprice. Sort the result set on ProductNumber in ascending order.
Sample table: production.Product
productid|name |productnumber|makeflag|finishedgoodsflag|color |safetystocklevel|reorderpoint|standardcost|listprice|size|sizeunitmeasurecode|weightunitmeasurecode|weight |daystomanufacture|productline|class|style|productsubcategoryid|productmodelid|sellstartdate |sellenddate |discontinueddate|rowguid |modifieddate |
---------+--------------------------------+-------------+--------+-----------------+------------+----------------+------------+------------+---------+----+-------------------+---------------------+-------+-----------------+-----------+-----+-----+--------------------+--------------+-----------------------+-----------------------+----------------+------------------------------------+-----------------------+
1|Adjustable Race |AR-5381 |false |false | | 1000| 750| 0| 0| | | | | 0| | | | | |2008-04-30 00:00:00.000| | |694215b7-08f7-4c0d-acb1-d734ba44c0c8|2014-02-08 10:01:36.827|
2|Bearing Ball |BA-8327 |false |false | | 1000| 750| 0| 0| | | | | 0| | | | | |2008-04-30 00:00:00.000| | |58ae3c20-4f3a-4749-a7d4-d568806cc537|2014-02-08 10:01:36.827|
3|BB Ball Bearing |BE-2349 |true |false | | 800| 600| 0| 0| | | | | 1| | | | | |2008-04-30 00:00:00.000| | |9c21aed2-5bfa-4f18-bcb8-f11638dc2e4e|2014-02-08 10:01:36.827|
4|Headset Ball Bearings |BE-2908 |false |false | | 800| 600| 0| 0| | | | | 0| | | | | |2008-04-30 00:00:00.000| | |ecfed6cb-51ff-49b5-b06c-7d8ac834db8b|2014-02-08 10:01:36.827|
316|Blade |BL-2036 |true |false | | 800| 600| 0| 0| | | | | 1| | | | | |2008-04-30 00:00:00.000| | |e73e9750-603b-4131-89f5-3dd15ed5ff80|2014-02-08 10:01:36.827|
317|LL Crankarm |CA-5965 |false |false |Black | 500| 375| 0| 0| | | | | 0| |L | | | |2008-04-30 00:00:00.000| | |3c9d10b7-a6b2-4774-9963-c19dcee72fea|2014-02-08 10:01:36.827|
318|ML Crankarm |CA-6738 |false |false |Black | 500| 375| 0| 0| | | | | 0| |M | | | |2008-04-30 00:00:00.000| | |eabb9a92-fa07-4eab-8955-f0517b4a4ca7|2014-02-08 10:01:36.827|
-- more --
Sample Solution:
-- Selecting specific columns from the Product table and adding a calculated column for price range
SELECT
-- Selecting the ProductNumber column
ProductNumber,
-- Selecting the Name column
Name,
-- Selecting the listprice column
listprice,
-- Applying a CASE statement to categorize products into price ranges
CASE
-- Condition: ListPrice is 0
WHEN ListPrice = 0 THEN 'Mfg item - not for resale'
-- Condition: ListPrice is less than 50
WHEN ListPrice < 50 THEN 'Under $50'
-- Condition: ListPrice is between 50 and 249.99
WHEN ListPrice >= 50 and ListPrice < 250 THEN 'Under $250'
-- Condition: ListPrice is between 250 and 999.99
WHEN ListPrice >= 250 and ListPrice < 1000 THEN 'Under $1000'
-- Default condition: ListPrice is 1000 or more
ELSE 'Over $1000'
END "Price Range"
-- Selecting data from the Product table
FROM Production.Product
-- Ordering the result set by ProductNumber
ORDER BY ProductNumber ;
Explanation:
- This SQL code selects specific columns from the Product table and adds a calculated column for price range.
- The CASE statement categorizes products into different price ranges based on their ListPrice.
- If ListPrice is 0, the product is labeled as 'Mfg item - not for resale'.
- If ListPrice is less than 50, the product is labeled as 'Under $50'.
- If ListPrice is between 50 and 249.99, the product is labeled as 'Under $250'.
- If ListPrice is between 250 and 999.99, the product is labeled as 'Under $1000'.
- If ListPrice is 1000 or more, the product is labeled as 'Over $1000'.
- The result set is ordered by ProductNumber.
Sample Output:
productnumber|name |listprice|Price Range | -------------+--------------------------------+---------+-------------------------+ AR-5381 |Adjustable Race | 0|Mfg item - not for resale| BA-8327 |Bearing Ball | 0|Mfg item - not for resale| BB-7421 |LL Bottom Bracket | 53.99|Under $250 | BB-8107 |ML Bottom Bracket | 101.24|Under $250 | BB-9108 |HL Bottom Bracket | 121.49|Under $250 | BC-M005 |Mountain Bottle Cage | 9.99|Under $50 | BC-R205 |Road Bottle Cage | 8.99|Under $50 | BE-2349 |BB Ball Bearing | 0|Mfg item - not for resale| BE-2908 |Headset Ball Bearings | 0|Mfg item - not for resale| BK-M18B-40 |Mountain-500 Black, 40 | 539.99|Under $1000 | BK-M18B-42 |Mountain-500 Black, 42 | 539.99|Under $1000 | BK-M18B-44 |Mountain-500 Black, 44 | 539.99|Under $1000 | BK-M18B-48 |Mountain-500 Black, 48 | 539.99|Under $1000 | BK-M18B-52 |Mountain-500 Black, 52 | 539.99|Under $1000 | ...
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