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Solutions to the Exercises
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model="closed" dt:type="string"/> <ElementType name="LastName" content="textOnly" model="closed" dt:type="string"/> <ElementType name="Phone" content="textOnly" model="closed" dt:type="string"/> <ElementType name="Fax" content="textOnly" model="closed" dt:type="string"/> <ElementType name="Email" content="textOnly" model="closed" dt:type="string"/> <ElementType name="OrgUnitId" content="textOnly" model="closed" dt:type="i2"/> <ElementType name="UserName" content="textOnly" model="closed" dt:type="string"/> <ElementType name="ts" content="textOnly" model="closed" dt:type="i8"/> <ElementType name="dbo.Order" content="eltOnly" model="closed" order="many"> <element type="dbo.OrderItem" maxOccurs="*"/> <element type="OrderId"/> <element type="OrderDate"/> <element type="RequestedById"/> <element type="TargetDate"/> <element type="CompletionDate"/> <element type="DestinationLocationId"/> <element type="Note"/> <element type="OrderTypeId"/> <element type="OrderStatusid"/> </ElementType> <ElementType name="OrderId" content="textOnly" model="closed" dt:type="i4"/> <ElementType name="OrderDate" content="textOnly" model="closed" dt:type="dateTime"/> <ElementType name="RequestedById" content="textOnly" model="closed" dt:type="i4"/> <ElementType name="TargetDate" content="textOnly" model="closed" dt:type="dateTime"/> <ElementType name="CompletionDate" content="textOnly" model="closed" dt:type="dateTime"/> <ElementType name="DestinationLocationId" content="textOnly" model="closed" dt:type="i4"/> <ElementType name="Note" content="textOnly" model="closed" dt:type="string"/>
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<ElementType name="OrderTypeId" content="textOnly" model="closed" dt:type="i2"/> <ElementType name="OrderStatusid" content="textOnly" model="closed" dt:type="ui1"/> <ElementType name="dbo.OrderItem" content="eltOnly" model="closed" order="many"> <element type="dbo.OrderStatus" maxOccurs="*"/> <element type="ItemId"/> <element type="OrderId"/> <element type="InventoryId"/> <element type="ActionId"/> <element type="EquipmentId"/> </ElementType> <ElementType name="ItemId" content="textOnly" model="closed" dt:type="i4"/> <ElementType name="OrderId" content="textOnly" model="closed" dt:type="i4"/> <ElementType name="InventoryId" content="textOnly" model="closed" dt:type="i4"/> <ElementType name="ActionId" content="textOnly" model="closed" dt:type="i2"/> <ElementType name="EquipmentId" content="textOnly" model="closed" dt:type="i4"/> <ElementType name="dbo.OrderStatus" content="eltOnly" model="closed" order="many"> <element type="dbo.OrderType" maxOccurs="*"/> <element type="OrderStatusId"/> <element type="OrderStatus"/> </ElementType> <ElementType name="OrderStatusId" content="textOnly" model="closed" dt:type="ui1"/> <ElementType name="OrderStatus" content="textOnly" model="closed" dt:type="string"/> <ElementType name="dbo.OrderType" content="eltOnly" model="closed" order="many"> <element type="OrderTypeId"/> <element type="OrderType"/> </ElementType>
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<ElementType name="OrderTypeId" content="textOnly" model="closed" dt:type="i2"/> <ElementType name="OrderType" content="textOnly" model="closed" dt:type="string"/> </Schema> <dbo.Contact xmlns="x-schema:#Schema"> <ContactId>1</ContactId> <FirstName>Dejan</FirstName> <LastName>Sunderic</LastName> <Phone>111-1111</Phone> <Fax>111-1112</Fax> <Email>dejans@hotmail.com</Email> <OrgUnitId>1</OrgUnitId> <UserName>dejans</UserName> <ts>2503</ts> <dbo.Order> <OrderId>1</OrderId> <OrderDate>1999-01-10T00:00:00</OrderDate> <RequestedById>1</RequestedById> <TargetDate>2000-01-01T00:00:00</TargetDate> <OrderTypeId>3</OrderTypeId> <OrderStatusid>1</OrderStatusid> <dbo.OrderItem> <ItemId>2</ItemId> <OrderId>1</OrderId> <InventoryId>5</InventoryId> <dbo.OrderStatus> <OrderStatusId>1</OrderStatusId> <OrderStatus>Ordered</OrderStatus> <dbo.OrderType> <OrderTypeId>3</OrderTypeId> <OrderType>Scrap</OrderType> </dbo.OrderType> </dbo.OrderStatus> </dbo.OrderItem> </dbo.Order> </dbo.Contact>
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Exercise 12.2
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Create a stored procedure that returns an XML document based on the content of Order, OrderItem, and Equipment tables with the following structure:
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<Order oid="1" OrderDate="1999-01-10T00:00:00"> <OrderItem id="2" InventoryId="5"> <Equipment EquipmentId="1" Make="Toshiba" Model="Portege 7020CT"/> </OrderItem> <OrderItem id="5" InventoryId="8"> <Equipment EquipmentId="5" Make="Bang & Olafson" Model="V4000"/> </OrderItem> </Order> <Order oid="6" OrderDate="2000-02-02T00:00:00"> <OrderItem id="10" InventoryId="6"> <Equipment EquipmentId="6" Make="NEC" Model="V90"/> </OrderItem> <OrderItem id="11" InventoryId="25"> <Equipment EquipmentId="1" Make="Toshiba" Model="Portege 7020CT"/> </OrderItem> <OrderItem id="12" InventoryId="29"> <Equipment EquipmentId="35" Make="NEC" Model="Multisync III"/> </OrderItem> <OrderItem id="13" InventoryId="27"> <Equipment EquipmentId="34" Make="Toshiba" Model="Portege 7030CT"/> </OrderItem> </Order> <Order oid="7" OrderDate="2000-03-03T00:00:00"/> ...
Appendix B:
Solutions to the Exercises
Exercise 12.2 Solution
We must use the Explicit mode of the For XML clause to control the content of the stored procedure precisely:
SELECT 1 as Tag, NULL as Parent, O.OrderID as [Order!1!oid], O.OrderDate as [Order!1!OrderDate], O.Note as [Order!1!Note], NULL as [OrderItem!2!id], NULL as [OrderItem!2!InventoryId], NULL as [Equipment!3!EquipmentId], NULL as [Equipment!3!Make], NULL as [Equipment!3!Model] FROM [Order] O UNION ALL SELECT 2 as Tag, 1 as Parent, O.OrderID, NULL, NULL, OI.ItemID, OI.InventoryId, NULL, NULL, NULL FROM WHERE UNION ALL SELECT 3 as Tag, 2 as Parent, O.OrderID, NULL, NULL, OI.ItemID, NULL, E.EquipmentID, E.Make, E.Model FROM WHERE [Order] O, OrderItem OI, Equipment E O.OrderID = OI.OrderID [Order] O, OrderItem OI O.OrderID = OI.OrderID
SQL Server 2000 Stored Procedure Programming
OI.EquipmentID = E.EquipmentID
ORDER BY [Order!1!oid], [OrderItem!2!id], [Equipment!3!EquipmentId] FOR XML EXPLICIT
Exercise 12.3
Create a stored procedure that receives Order information in the form of an XML message, parses it, and stores it in tables.
Exercise 12.3 Solution
You could use the OpenXML rowset provider to parse the content of the XML document. Since Order.OrderId and OrderItem.ItemId are identity fields, you need to ignore values provided in the XML document. The biggest problem that I had working with this stored procedure was due to the fact that XML is case sensitive, unlike Transact-SQL. You have to make column patterns in the OpenXML rowset provider to match the names of the attributes.
Alter Procedure prOrderSave -- Extract Order (and Order Items) info. from an XML document. @chvXMLDoc text, @debug int = 0 As set nocount on Declare @intErrorCode int, @intTransactionCountOnEntry int, @intRowCount int, @intDoc int, @intOrderId int Select @intErrorCode = @@Error If @debug <> 0 select 'Load XML document.' --Create an internal representation of the XML document. If @intErrorCode = 0 EXEC @intErrorCode = sp_xml_preparedocument @intDoc OUTPUT, @chvXMLDoc
Appendix B:
Solutions to the Exercises
If @intErrorCode = 0 Begin Select @intTransactionCountOnEntry = @@TranCount BEGIN TRANSACTION If @debug <> 0 select 'Transaction started.' End -- extract order info If @intErrorCode = 0 Begin Insert into [Order](OrderDate, RequestedById, TargetDate, CompletionDate, DestinationLocationId, Note, OrderTypeId, OrderStatusid) SELECT OrderDate, RequestedById, TargetDate, CompletionDate, DestinationLocationId, Note, OrderTypeId, OrderStatusid FROM OPENXML WITH (@intDoc, '/Order', 1) (OrderDate smalldatetime '@OrderDate', RequestedById int '@RequestedById', TargetDate smalldatetime '@TargetDate', CompletionDate smalldatetime '@CompletionDate', DestinationLocationId int '@DestinationLocationId', Note text '@Note', OrderTypeID int '@OrderTypeId', OrderStatusId int '@OrderStatusid') Select @intErrorCode = @@Error, @intOrderId = @@identity If @debug <> 0 Select 'OrderInserted:', @intErrorCode [Error], @intOrderId [identity] End -- extract OrderItem info If @intErrorCode = 0 Begin Insert into OrderItem(OrderID, InventoryId, ActionId, EquipmentId) SELECT FROM @intOrderId, * OPENXML WITH (@intDoc, '/Order/OrderItem', 1) (InventoryId int '@InventoryId',
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