AdventureWorks Database: Customers with BirthDate after January 1, 1970 and last name Smith

Last update on December 20 2024 11:57:14 (UTC/GMT +8 hours)

171. From the following table, write a query in SQL to return all employees with a BirthDate after September 1, 1988, and a JobTitle of 'Production Technician - WC40'. Return the columns BusinessEntityID, JobTitle, and BirthDate, and sort the result set in ascending order by BirthDate.

Sample table: HumanResources.Employee

businessentityid|nationalidnumber|loginid                     |jobtitle                                |birthdate |maritalstatus|gender|hiredate  |salariedflag|vacationhours|sickleavehours|currentflag|rowguid                             |modifieddate           |organizationnode|
----------------+----------------+----------------------------+----------------------------------------+----------+-------------+------+----------+------------+-------------+--------------+-----------+------------------------------------+-----------------------+----------------+
               1|295847284       |adventure-works\ken0        |Chief Executive Officer                 |1969-01-29|S            |M     |2009-01-14|true        |           99|            69|true       |f01251e5-96a3-448d-981e-0f99d789110d|2014-06-30 00:00:00.000|/               |
               2|245797967       |adventure-works\terri0      |Vice President of Engineering           |1971-08-01|S            |F     |2008-01-31|true        |            1|            20|true       |45e8f437-670d-4409-93cb-f9424a40d6ee|2014-06-30 00:00:00.000|/1/             |
               3|509647174       |adventure-works\roberto0    |Engineering Manager                     |1974-11-12|M            |M     |2007-11-11|true        |            2|            21|true       |9bbbfb2c-efbb-4217-9ab7-f97689328841|2014-06-30 00:00:00.000|/1/1/           |
               4|112457891       |adventure-works\rob0        |Senior Tool Designer                    |1974-12-23|S            |M     |2007-12-05|false       |           48|            80|true       |59747955-87b8-443f-8ed4-f8ad3afdf3a9|2014-06-30 00:00:00.000|/1/1/1/         |
               5|695256908       |adventure-works\gail0       |Design Engineer                         |1952-09-27|M            |F     |2008-01-06|true        |            5|            22|true       |ec84ae09-f9b8-4a15-b4a9-6ccbab919b08|2014-06-30 00:00:00.000|/1/1/2/         |
               6|998320692       |adventure-works\jossef0     |Design Engineer                         |1959-03-11|M            |M     |2008-01-24|true        |            6|            23|true       |e39056f1-9cd5-478d-8945-14aca7fbdcdd|2014-06-30 00:00:00.000|/1/1/3/         |
               7|134969118       |adventure-works\dylan0      |Research and Development Manager        |1987-02-24|M            |M     |2009-02-08|true        |           61|            50|true       |4f46deca-ef01-41fd-9829-0adab368e431|2014-06-30 00:00:00.000|/1/1/4/         |
               8|811994146       |adventure-works\diane1      |Research and Development Engineer       |1986-06-05|S            |F     |2008-12-29|true        |           62|            51|true       |31112635-663b-4018-b4a2-a685c0bf48a4|2014-06-30 00:00:00.000|/1/1/4/1/       |
               9|658797903       |adventure-works\gigi0       |Research and Development Engineer       |1979-01-21|M            |F     |2009-01-16|true        |           63|            51|true       |50b6cdc6-7570-47ef-9570-48a64b5f2ecf|2014-06-30 00:00:00.000|/1/1/4/2/       |
              10|879342154       |adventure-works\michael6    |Research and Development Manager        |1984-11-30|M            |M     |2009-05-03|true        |           16|            64|true       |eaa43680-5571-40cb-ab1a-3bf68f04459e|2014-06-30 00:00:00.000|/1/1/4/3/       |
			  -- more --

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Sample Solution:

-- This SQL query selects the BusinessEntityID, JobTitle, and BirthDate columns from the humanresources.employee table, filtering the results based on certain conditions and ordering the output.
-- Selecting BusinessEntityID, JobTitle, and BirthDate columns.
SELECT businessentityid, jobtitle, birthdate 
-- Creating a derived table by selecting all columns from the employee table where the BirthDate is greater than '1988-09-01'.
FROM  
   (SELECT * FROM humanresources.employee  
    WHERE BirthDate > '1988-09-01') AS EmployeeDerivedTable  
-- Filtering the results further by selecting only rows where the JobTitle is 'Production Technician - WC40'.
WHERE jobtitle = 'Production Technician - WC40'  
-- Ordering the results by BirthDate in ascending order.
ORDER BY birthdate;

Explanation:

The query first selects three columns: BusinessEntityID, JobTitle, and BirthDate.
It uses a subquery (derived table) to filter the rows from the employee table where the BirthDate is greater than '1988-09-01'.
Then, it applies an additional filter on the derived table, selecting only rows where the JobTitle is 'Production Technician - WC40'.
Finally, it orders the results by BirthDate in ascending order.
This query effectively retrieves employees who have the job title 'Production Technician - WC40' and were born after September 1, 1988, sorted by their birth dates.

Sample Output:

businessentityid|jobtitle                    |birthdate |
----------------+----------------------------+----------+
             198|Production Technician - WC40|1988-11-26|
             193|Production Technician - WC40|1988-12-05|
             194|Production Technician - WC40|1989-06-25|
             202|Production Technician - WC40|1989-11-10|
             131|Production Technician - WC40|1990-10-07|
             133|Production Technician - WC40|1991-01-04|

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