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Task 4: 
In the table Customer there are records with the same phone numbers. Find all phone numbers that occur more than once and output the result in two columns Phone and CustomerIDs - a sorted list of CustomerIds, separated by commas.
Sort the result by phone number.

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To write the answer, use SQL Server 2022 syntax. Descriptions of the tables are given in the right panel.

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AdventureWorks Database (SQL Server)

The AdventureWorks Database is a sample database that demonstrates the capabilities of SQL Server. It includes data about fictional manufacturing company.

AdventureWorks DB ER diagram

The following is a list of these tables:

  • Address - table of addresses.
  • Customer - table of customers
  • CustomerAddress - table of customer tot address relations.
  • Product - table of products.
  • ProductCategory - table of product categories.
  • ProductDescription - table of product descriptions.
  • ProductModel - table of product models.
  • ProductModelProductDescription - table of product models descriptions.
  • SalesOrderDetail - table of product sales orders.
  • SalesOrderHeader - table of product sales orders details.
T-SQL Fundamentals by Itzik Ben-Gan
T-SQL Fundamentals by Itzik Ben-Gan
Master Transact-SQL's fundamentals, and write correct, robust code for querying and modifying data with modern Microsoft data technologies, including SQL Server 2022, Azure SQL Database, and Azure SQL Managed Instance.

Table Address

Columns:
  • AddressID - a unique identifier for each address.
  • AddressLine1 - the first line of the address.
  • AddressLine2 - the second line of the address.
  • StateProvince - city.
  • CountryRegion - country.
  • PostalCode - postal code.
  • rowguid - guid.
  • ModifiedDate - timestamp of row creation or last update.
AddressID AddressLine1 AddressLine2 City StateProvince CountryRegion PostalCode rowguid ModifiedDate
9 8713 Yosemite Ct. null Bothell Washington United States 98011 268AF621-76D7-4C78-9441-144FD139821A 2006-07-01 00:00:00.000
Indexes:
  • PRIMARY KEY, btree (AddressID)

Table Customer

Columns:
  • CustomerID - a unique identifier for each customer.
  • NameStyle - 0 = The data in FirstName and LastName are stored in western style (first name, last name) order. 1 = Eastern style (last name, first name) order. Default: 0.
  • Title - title.
  • FirstName - name.
  • MiddleName - middle name.
  • LastName - last name.
  • Suffix - suffix.
  • CompanyName - company name.
  • SalesPerson - SalesPerson.
  • EmailAddress - E-mail.
  • Phone - phone number.
  • PasswordHash - password hash.
  • PasswordSalt - salt.
  • rowguid - rowguid.
  • ModifiedDate - timestamp of row creation or last update.
CustomerID NameStyle Title FirstName MiddleName LastName Suffix CompanyName SalesPerson EmailAddress Phone PasswordHash PasswordSalt rowguid ModifiedDate
1 0 Mr. Orlando N. Gee [null] A Bike Store adventure-works\pamela0 orlando0@adventure-works.com 245-555-0173 L/Rlwxzp4w7RWmEgXX+/A7cXaePEPcp+KwQhl2fJL7w= 1KjXYs4= 3F5AE95E-B87D-4AED-95B4-C3797AFCB74F 2005-08-01 00:00:00.000
Indexes:
  • PRIMARY KEY, btree (CustomerID)

Table CustomerAddress

Columns:
  • CustomerID - unique identifier of client in the table Customer.
  • AddressID - unique identifier of address in the table Address.
  • AddressType - address type.
  • rowguid - guid.
  • ModifiedDate - timestamp of row creation or last update.
CustomerID AddressID AddressType rowguid ModifiedDate
29485 1086 Main Office 16765338-DBE4-4421-B5E9-3836B9278E63 2007-09-01 00:00:00.000
Indexes:
  • PRIMARY KEY, btree (CustomerID, AddressID)

Table Product

Columns:
  • ProductID - a unique identifier for each product.
  • Name - product name.
  • ProductNumber - article number.
  • Color - product color.
  • StandardCost - product price.
  • ListPrice - product price in the catalogue.
  • Size - product size.
  • Weight - product weight.
  • ProductCategoryID - foreign key pointing to table ProductCategory - defines the product category.
  • ProductModelID - foreign key pointing to table ProductModel - defines the product model.
  • SellStartDate - timestamp of the sales start date.
  • SellEndDate - timestamp of the sales end date.
  • DiscontinuedDate - timestamp of the sales end date.
  • ThumbNailPhoto - thumbnail photo of the product.
  • ThumbnailPhotoFileName - name of the photo thumbnail file.
  • rowguid - guid.
  • ModifiedDate - timestamp of row creation or last update.
ProductID Name ProductNumber Color StandardCost ListPrice Size Weight ProductCategoryID ProductModelID SellStartDate SellEndDate DiscontinuedDate ThumbNailPhoto ThumbnailPhotoFileName rowguid ModifiedDate
680 HL Road Frame - Black, 58 FR-R92B-58 Black 1059.3100 1431.5000 58 1016.04 18 6 2002-06-01 00:00:00.000 [null] [null] [binary] no_image_available_small.gif 43DD68D6-14A4-461F-9069-55309D90EA7E 2008-03-11 10:01:36.827
Indexes:
  • PRIMARY KEY, btree (ProductID, ProductCategoryID, ProductModelID)

Table ProductCategory

Columns:
  • ProductCategoryID - a unique identifier for each product category.
  • ParentProductCategoryID - identifier of the parent product category.
  • Name - name of the product category.
  • rowguid - guid.
  • ModifiedDate - timestamp of row creation or last update.
ProductCategoryID ParentProductCategoryID Name rowguid ModifiedDate
1 [null] Bikes CFBDA25C-DF71-47A7-B81B-64EE161AA37C 2002-06-01 00:00:00.000
Indexes:
  • PRIMARY KEY, btree (ProductCategoryID)

Table ProductDescription

Columns:
  • ProductDescriptionID - a unique identifier for each product description.
  • Description - product description.
  • rowguid - guid.
  • ModifiedDate - timestamp of row creation or last update.
ProductDescriptionID Description rowguid ModifiedDate
4 Aluminum alloy cups; large diameter spindle. DFEBA528-DA11-4650-9D86-CAFDA7294EB0 2007-06-01 00:00:00.000
Indexes:
  • PRIMARY KEY, btree (ProductDescriptionID)

Table ProductModel

Columns:
  • ProductModelID - a unique identifier for each product model.
  • Name - name of the product model.
  • CatalogDescription - description in XML format.
  • rowguid - guid.
  • ModifiedDate - timestamp of row creation or last update.
ProductModelID Name CatalogDescription rowguid ModifiedDate
1 Classic Vest [null] 29321D47-1E4C-4AAC-887C-19634328C25E 2007-06-01 00:00:00.000
Indexes:
  • PRIMARY KEY, btree (ProductModelID)

Table ProductModelProductDescription

Columns:
  • ProductModelID - unique identifier of client in the table ProductModel.
  • ProductDescriptionID - unique identifier of address in the table ProductDescription.
  • Culture - language code in ISO format.
  • rowguid - guid.
  • ModifiedDate - timestamp of row creation or last update.
ProductModelID ProductDescriptionID Culture rowguid ModifiedDate
1 1199 en 4D00B649-027A-4F99-A380-F22A46EC8638 2007-06-01 00:00:00.000
Indexes:
  • PRIMARY KEY, btree (ProductModelID, ProductDescriptionID)

Table SalesOrderDetail

Columns:
  • SalesOrderID - foreign key referencing table SalesOrderHeader.
  • SalesOrderDetailID - a unique identifier of record in the table.
  • OrderQty - quantity.
  • ProductID - a foreign key referencing the table Product.
  • UnitPrice - price per unit of goods.
  • UnitPriceDiscount - price per unit of product with a discount.
  • LineTotal - Total.
  • rowguid - guid.
  • ModifiedDate - timestamp of row creation or last update.
SalesOrderID SalesOrderDetailID OrderQty ProductID UnitPrice UnitPriceDiscount LineTotal rowguid ModifiedDate
71774 110562 1 836 356.8980 .0000 356.898000 E3A1994C-7A68-4CE8-96A3-77FDD3BBD730 2008-06-01 00:00:00.000
Indexes:
  • PRIMARY KEY, btree (SalesOrderID, SalesOrderDetailID, ProductID)

Table SalesOrderHeader

Columns:
  • SalesOrderID - a unique identifier of record in the table.
  • RevisionNumber - revision number.
  • OrderDate - timestamp for creating the order date.
  • DueDate - timestamp of the order payment date.
  • ShipDate - timestamp of the date the order was shipped.
  • Status - order status.
  • OnlineOrderFlag - online order (yes/no).
  • SalesOrderNumber - order number.
  • PurchaseOrderNumber - purchase number.
  • AccountNumber - account number.
  • CustomerID - foreign key referencing the table Customer - defines the client.
  • ShipToAddressID - foreign key referencing table Address - defines the delivery address.
  • BillToAddressID - foreign key referencing table Address - defines the account address.
  • ShipMethod - delivery method.
  • CreditCardApprovalCode - credit card confirmation code.
  • SubTotal - subtotal.
  • TaxAmt - taxes.
  • Freight - delivery cost.
  • TotalDue - total.
  • Comment - comment.
  • rowguid - guid.
  • ModifiedDate - timestamp of row creation or last update.
SalesOrderID RevisionNumber OrderDate DueDate ShipDate Status OnlineOrderFlag SalesOrderNumber PurchaseOrderNumber AccountNumber CustomerID ShipToAddressID BillToAddressID ShipMethod CreditCardApprovalCode SubTotal TaxAmt Freight TotalDue Comment rowguid ModifiedDate
71774 2 2008-06-01 00:00:00.000 2008-06-13 00:00:00.000 2008-06-08 00:00:00.000 5 0 SO71774 PO348186287 10-4020-000609 29847 1092 1092 CARGO TRANSPORT 5 [null] 880.3484 70.4279 22.0087 972.7850 [null] 89E42CDC-8506-48A2-B89B-EB3E64E3554E 2008-06-08 00:00:00.000
Indexes:
  • PRIMARY KEY, btree (SalesOrderID, CustomerID, ShipToAddressID, BillToAddressID)
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