AdventureWorks Database: List people with three-letter first names ending in 'an'

SQL Query - AdventureWorks: Exercise-158 with Solution

158. From the following table write a query in SQL to list all people with three-letter first names ending in 'an'. Sort the result set in ascending order on first name. Return first name and last name.

businessentityid|persontype|namestyle|title|firstname               |middlename      |lastname              |suffix|emailpromotion|additionalcontactinfo|demographics|rowguid                             |modifieddate           |
----------------+----------+---------+-----+------------------------+----------------+----------------------+------+--------------+---------------------+------------+------------------------------------+-----------------------+
               1|EM        |false    |     |Ken                     |J               |Sánchez               |      |             0|                     |[XML]       |92c4279f-1207-48a3-8448-4636514eb7e2|2009-01-07 00:00:00.000|
               2|EM        |false    |     |Terri                   |Lee             |Duffy                 |      |             1|                     |[XML]       |d8763459-8aa8-47cc-aff7-c9079af79033|2008-01-24 00:00:00.000|
               3|EM        |false    |     |Roberto                 |                |Tamburello            |      |             0|                     |[XML]       |e1a2555e-0828-434b-a33b-6f38136a37de|2007-11-04 00:00:00.000|
               4|EM        |false    |     |Rob                     |                |Walters               |      |             0|                     |[XML]       |f2d7ce06-38b3-4357-805b-f4b6b71c01ff|2007-11-28 00:00:00.000|
               5|EM        |false    |Ms.  |Gail                    |A               |Erickson              |      |             0|                     |[XML]       |f3a3f6b4-ae3b-430c-a754-9f2231ba6fef|2007-12-30 00:00:00.000|
               6|EM        |false    |Mr.  |Jossef                  |H               |Goldberg              |      |             0|                     |[XML]       |0dea28fd-effe-482a-afd3-b7e8f199d56f|2013-12-16 00:00:00.000|
               7|EM        |false    |     |Dylan                   |A               |Miller                |      |             2|                     |[XML]       |c45e8ab8-01be-4b76-b215-820c8368181a|2009-02-01 00:00:00.000|
               8|EM        |false    |     |Diane                   |L               |Margheim              |      |             0|                     |[XML]       |a948e590-4a56-45a9-bc9a-160a1cc9d990|2008-12-22 00:00:00.000|
               9|EM        |false    |     |Gigi                    |N               |Matthew               |      |             0|                     |[XML]       |5fc28c0e-6d36-4252-9846-05caa0b1f6c5|2009-01-09 00:00:00.000|
			   -- more --

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Sample Solution:

-- Selecting first name and last name from the Person table
SELECT 
    -- Selecting the FirstName column from the Person table
    FirstName, 
    -- Selecting the LastName column from the Person table
    LastName  
-- From the Person table
FROM 
    Person.Person  
-- Filtering records to include only those where the first name ends with 'an' and is preceded by one character (wildcard '_' matches any single character)
WHERE 
    FirstName LIKE '_an'  
-- Ordering the result set by first name
ORDER BY 
    FirstName;

Explanation:

• This SQL code retrieves the first name and last name of persons whose first name ends with 'an' and is preceded by one character.
• The SELECT statement specifies the columns to be included in the result set.
• The FROM clause indicates the table from which data is being retrieved, which is the Person table.
• The WHERE clause filters records to include only those where the first name meets the specified pattern using the LIKE operator with the wildcard '_' to match any single character before 'an'.
• The ORDER BY clause sorts the result set by first name.

Sample Output:

firstname|lastname  |
---------+----------+
Dan      |Bacon     |
Dan      |Wilson    |
Dan      |Wilson    |
Dan      |Bacon     |
Dan      |Baker     |
Dan      |Moyer     |
Dan      |Wilson    |
Ian      |Stewart   |
Ian      |Yuhasz    |
Ian      |Brooks    |
Ian      |Kelly     |
...

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