AdventureWorks Database: Find products between $1000 and $1220 in lower, upper, and lowerupper

SQL Query - AdventureWorks: Exercise-65 with Solution

65. From the following table write a query in SQL to select product names that have prices between $1000.00 and $1220.00. Return product name as Lower, Upper, and also LowerUpper.

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 --

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Sample Solution:

-- Selecting lowercased, uppercased, and doubly lowercased-then-uppercased substrings of the 'Name' column
SELECT LOWER(SUBSTRING(Name, 1, 25)) AS Lower,   
       UPPER(SUBSTRING(Name, 1, 25)) AS Upper,   
       LOWER(UPPER(SUBSTRING(Name, 1, 25))) As LowerUpper  

-- From the Production schema's Product table
FROM production.Product  

-- Filtering the results to include only rows where the 'standardcost' column is between 1000.00 and 1220.00
WHERE standardcost between 1000.00 and 1220.00;

Explanation:

• The SQL query retrieves data from the Product table within the Production schema.
• It applies string manipulation functions to the Name column to generate different variations of the substring.
• The SUBSTRING() function extracts a portion of the 'Name' column, starting from the first character and up to 25 characters.
• The LOWER() function converts the extracted substring to lowercase, and the UPPER() function converts it to uppercase.
• In the case of 'LowerUpper', the substring is first converted to uppercase, then to lowercase.
• The result set includes three columns: 'Lower', 'Upper', and 'LowerUpper', representing the lowercased, uppercased, and doubly lowercased-then-uppercased substrings, respectively.
• The WHERE clause filters the results to include only rows where the value of the 'standardcost' column falls within the specified range.

Sample Output:

lower                    |upper                    |lowerupper               |
-------------------------+-------------------------+-------------------------+
hl road frame - black, 58|HL ROAD FRAME - BLACK, 58|hl road frame - black, 58|
hl road frame - red, 58  |HL ROAD FRAME - RED, 58  |hl road frame - red, 58  |
road-350-w yellow, 40    |ROAD-350-W YELLOW, 40    |road-350-w yellow, 40    |
road-350-w yellow, 42    |ROAD-350-W YELLOW, 42    |road-350-w yellow, 42    |
road-350-w yellow, 44    |ROAD-350-W YELLOW, 44    |road-350-w yellow, 44    |
road-350-w yellow, 48    |ROAD-350-W YELLOW, 48    |road-350-w yellow, 48    |

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