AdventureWorks Database: Repeat the 0 character four times before productnumber

SQL Query - AdventureWorks: Exercise-184 with Solution

184. From the following table write a query in SQL to repeat the 0 character four times before productnumber. Return name, productnumber and newly created productnumber.

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 --

Click to view Full table

Sample Solution:

-- Selecting columns 'Name' and 'productnumber' from the Product table
SELECT Name,  
   productnumber ,
   -- Concatenating a string of four '0's with the productnumber and aliasing it as fullProductNumber
   concat(REPEAT('0', 4) , productnumber) AS fullProductNumber
-- Ordering the results by the 'Name' column
FROM Production.Product  
ORDER BY Name;

Explanation:

• This SQL query operates on the Production.Product table.
• Comments are added to explain each part of the query for better understanding and maintenance.
• Here's a breakdown of what the query does:
• It selects the 'Name' and 'productnumber' columns from the Product table.
• It uses the CONCAT function to concatenate a string of four '0's with the productnumber.
• The REPEAT function repeats the character '0' four times.
• The CONCAT function then combines the repeated '0's with the productnumber.
• The result is aliased as fullProductNumber.
• The results are ordered by the 'Name' column.

Sample Output:

name                            |productnumber|fullproductnumber|
--------------------------------+-------------+-----------------+
Adjustable Race                 |AR-5381      |0000AR-5381      |
All-Purpose Bike Stand          |ST-1401      |0000ST-1401      |
AWC Logo Cap                    |CA-1098      |0000CA-1098      |
BB Ball Bearing                 |BE-2349      |0000BE-2349      |
Bearing Ball                    |BA-8327      |0000BA-8327      |
Bike Wash - Dissolver           |CL-9009      |0000CL-9009      |
Blade                           |BL-2036      |0000BL-2036      |
Cable Lock                      |LO-C100      |0000LO-C100      |
Chain                           |CH-0234      |0000CH-0234      |
Chain Stays                     |CS-2812      |0000CS-2812      |
Chainring                       |CR-7833      |0000CR-7833      |
...

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