AdventureWorks Database: Find the names of employees who have sold a particular product
199. From the following tables, write a query in SQL to find the first and last names of employees who have sold a product with the ProductNumber 'BK-M68B-42'. Return the distinct columns LastName and FirstName.
Sample table: Person.Person
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 --
Sample table: sales.SalesOrderHeader
salesorderid|revisionnumber|orderdate |duedate |shipdate |status|onlineorderflag|purchaseordernumber|accountnumber |customerid|salespersonid|territoryid|billtoaddressid|shiptoaddressid|shipmethodid|creditcardid|creditcardapprovalcode|currencyrateid|subtotal |taxamt |freight |totaldue |comment|rowguid |modifieddate |
------------+--------------+-----------------------+-----------------------+-----------------------+------+---------------+-------------------+--------------+----------+-------------+-----------+---------------+---------------+------------+------------+----------------------+--------------+-----------+----------+---------+-----------+-------+------------------------------------+-----------------------+
43659| 8|2011-05-31 00:00:00.000|2011-06-12 00:00:00.000|2011-06-07 00:00:00.000| 5|false |PO522145787 |10-4020-000676| 29825| 279| 5| 985| 985| 5| 16281|105041Vi84182 | | 20565.6206| 1971.5149| 616.0984| 23153.2339| |79b65321-39ca-4115-9cba-8fe0903e12e6|2011-06-07 00:00:00.000|
43660| 8|2011-05-31 00:00:00.000|2011-06-12 00:00:00.000|2011-06-07 00:00:00.000| 5|false |PO18850127500 |10-4020-000117| 29672| 279| 5| 921| 921| 5| 5618|115213Vi29411 | | 1294.2529| 124.2483| 38.8276| 1457.3288| |738dc42d-d03b-48a1-9822-f95a67ea7389|2011-06-07 00:00:00.000|
43661| 8|2011-05-31 00:00:00.000|2011-06-12 00:00:00.000|2011-06-07 00:00:00.000| 5|false |PO18473189620 |10-4020-000442| 29734| 282| 6| 517| 517| 5| 1346|85274Vi6854 | 4| 32726.4786| 3153.7696| 985.553| 36865.8012| |d91b9131-18a4-4a11-bc3a-90b6f53e9d74|2011-06-07 00:00:00.000|
43662| 8|2011-05-31 00:00:00.000|2011-06-12 00:00:00.000|2011-06-07 00:00:00.000| 5|false |PO18444174044 |10-4020-000227| 29994| 282| 6| 482| 482| 5| 10456|125295Vi53935 | 4| 28832.5289| 2775.1646| 867.2389| 32474.9324| |4a1ecfc0-cc3a-4740-b028-1c50bb48711c|2011-06-07 00:00:00.000|
43663| 8|2011-05-31 00:00:00.000|2011-06-12 00:00:00.000|2011-06-07 00:00:00.000| 5|false |PO18009186470 |10-4020-000510| 29565| 276| 4| 1073| 1073| 5| 4322|45303Vi22691 | | 419.4589| 40.2681| 12.5838| 472.3108| |9b1e7a40-6ae0-4ad3-811c-a64951857c4b|2011-06-07 00:00:00.000|
43664| 8|2011-05-31 00:00:00.000|2011-06-12 00:00:00.000|2011-06-07 00:00:00.000| 5|false |PO16617121983 |10-4020-000397| 29898| 280| 1| 876| 876| 5| 806|95555Vi4081 | | 24432.6088| 2344.9921| 732.81| 27510.4109| |22a8a5da-8c22-42ad-9241-839489b6ef0d|2011-06-07 00:00:00.000|
43665| 8|2011-05-31 00:00:00.000|2011-06-12 00:00:00.000|2011-06-07 00:00:00.000| 5|false |PO16588191572 |10-4020-000146| 29580| 283| 1| 849| 849| 5| 15232|35568Vi78804 | | 14352.7713| 1375.9427| 429.9821| 16158.6961| |5602c304-853c-43d7-9e79-76e320d476cf|2011-06-07 00:00:00.000|
-- more --
Sample table: Sales.SalesOrderDetail
salesorderid|salesorderdetailid|carriertrackingnumber|orderqty|productid|specialofferid|unitprice|unitpricediscount|rowguid |modifieddate |
------------+------------------+---------------------+--------+---------+--------------+---------+-----------------+------------------------------------+-----------------------+
43659| 1|4911-403C-98 | 1| 776| 1| 2024.994| 0|b207c96d-d9e6-402b-8470-2cc176c42283|2011-05-31 00:00:00.000|
43659| 2|4911-403C-98 | 3| 777| 1| 2024.994| 0|7abb600d-1e77-41be-9fe5-b9142cfc08fa|2011-05-31 00:00:00.000|
43659| 3|4911-403C-98 | 1| 778| 1| 2024.994| 0|475cf8c6-49f6-486e-b0ad-afc6a50cdd2f|2011-05-31 00:00:00.000|
43659| 4|4911-403C-98 | 1| 771| 1| 2039.994| 0|04c4de91-5815-45d6-8670-f462719fbce3|2011-05-31 00:00:00.000|
43659| 5|4911-403C-98 | 1| 772| 1| 2039.994| 0|5a74c7d2-e641-438e-a7ac-37bf23280301|2011-05-31 00:00:00.000|
43659| 6|4911-403C-98 | 2| 773| 1| 2039.994| 0|ce472532-a4c0-45ba-816e-eefd3fd848b3|2011-05-31 00:00:00.000|
43659| 7|4911-403C-98 | 1| 774| 1| 2039.994| 0|80667840-f962-4ee3-96e0-aeca108e0d4f|2011-05-31 00:00:00.000|
43659| 8|4911-403C-98 | 3| 714| 1| 28.8404| 0|e9d54907-e7b7-4969-80d9-76ba69f8a836|2011-05-31 00:00:00.000|
43659| 9|4911-403C-98 | 1| 716| 1| 28.8404| 0|aa542630-bdcd-4ce5-89a0-c1bf82747725|2011-05-31 00:00:00.000|
43659| 10|4911-403C-98 | 6| 709| 1| 5.7| 0|ac769034-3c2f-495c-a5a7-3b71cdb25d4e|2011-05-31 00:00:00.000|
43659| 11|4911-403C-98 | 2| 712| 1| 5.1865| 0|06a66921-6b9f-4199-a912-ddafd383472b|2011-05-31 00:00:00.000|
43659| 12|4911-403C-98 | 4| 711| 1| 20.1865| 0|0e371ee3-253e-4bb0-b813-83cf4224f972|2011-05-31 00:00:00.000|
-- more --
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 distinct last names and first names
SELECT DISTINCT pp.LastName, pp.FirstName
-- From the Person.Person table aliased as 'pp' and joined with the Employee table aliased as 'e' based on BusinessEntityID
FROM Person.Person pp JOIN HumanResources.Employee e
ON e.BusinessEntityID = pp.BusinessEntityID
-- Filtering records based on a subquery result
WHERE pp.BusinessEntityID IN
-- Subquery to retrieve SalesPersonID from the SalesOrderHeader table
(SELECT SalesPersonID
-- From the SalesOrderHeader table
FROM Sales.SalesOrderHeader
-- Filtering records where SalesOrderID is in the result of another subquery
WHERE SalesOrderID IN
-- Subquery to retrieve SalesOrderID from the SalesOrderDetail table
(SELECT SalesOrderID
-- From the SalesOrderDetail table
FROM Sales.SalesOrderDetail
-- Filtering records where ProductID is in the result of another subquery
WHERE ProductID IN
-- Subquery to retrieve ProductID from the Product table
(SELECT ProductID
-- From the Production.Product table aliased as 'p'
FROM Production.Product p
-- Filtering records where ProductNumber is 'BK-M68B-42'
WHERE ProductNumber = 'BK-M68B-42')));
Explanation:
- This SQL query retrieves distinct last names and first names of persons who are associated with specific sales orders involving a particular product.
- Comments are added to explain each part of the query for better understanding and maintenance.
- Here's a breakdown of what the query does:
- The SELECT DISTINCT clause ensures that only unique combinations of last names and first names are returned in the result set.
- The FROM clause specifies the source tables as Person.Person aliased as 'pp' and HumanResources.Employee aliased as 'e', joined based on BusinessEntityID.
- The WHERE clause filters records based on the BusinessEntityID being in the result of a subquery.
- The subquery retrieves SalesPersonID from the SalesOrderHeader table where the SalesOrderID is in the result of another subquery.
- This process continues with nested subqueries to retrieve SalesOrderID from SalesOrderDetail based on ProductID, and ProductID from the Product table based on ProductNumber.
Sample Output:
lastname |firstname| -----------------+---------+ Alberts |Amy | Ansman-Wolfe |Pamela | Blythe |Michael | Campbell |David | Carson |Jillian | Ito |Shu | Jiang |Stephen | Mensa-Annan |Tete | Mitchell |Linda | Pak |Jae | Reiter |Tsvi | Saraiva |José | Tsoflias |Lynn | Valdez |Rachel | ....
SQL AdventureWorks Editor:
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