What I would like to do is either have the InventoryTransaction_id not start over or be able to say in the XSD which column should be the key to use between the two tables. When I load files two and three the InventoryTransaction_id starts back over so I have 3 InventoryTransaction records with id of 2 and three PriceInfo records with InventoryTransaction_id of 2. Then it added an InventoryTransaction_id column to connect the two tables. So in my case I have an InventoryTransaction and then a complex type of PriceInfo with PriceType, Countr圜ode, and Price. This works great for loading in one file but when I load in multiple files the id that is created starts over. I used this today to import a large XML file for the first time into 5 tables. These errors and warnings can often be corrected by either adjusting the XSD file or the Output Column properties in the XML Source. Finally, some common errors often occur and center around data length and data type conflicts between the XSD file schema and the SQL Server table. Thus a single XML file might be loaded into many different tables. XML files often contain multiple hierarchical structures or elements nested within other elements in order to compensate for this setup, SSIS will actually output multiple tabular sets for these hierarchical structures. The XML Source task actually contains a button which can generate the XSD file if needed. When completing the load and in addition to the XML file itself, the XML format and schema must also be defined in SSIS either by using an XSD file or via inline schema contained within the XML file itself. However, well formatted XML documents can be loaded using the XML Source data flow.
Loading data from a XML file is not nearly as easy as loading text files or flat files. Generally if you get an XML file from an alternate source, the XSD should already be embedded inline within the XML file or the organization providing the XML should provide you with the appropriate XSD file.
Alternately, you can browse and select the location of a separate XSD file this file will outline in detail the tags within the XML file. If this option is selected than the XSD location and Generate XSD options are grayed out. In essence the XSD file is embedded in the XML file. The Use Inline schema option tells SSIS that the schema definition actually resides in the XML file itself. Thus, you can browse to the location of the XML file.įinally, the last three items, Use inline schema, XSD location, and Generate XSD make a significant difference in what happens during the XML processing (commonly known as shredding). First the Data access mode is selected for this example use an actual file location, but XML File from variable or XML data from variable can also be selected. This screen is where some of the decision making must take place and also where many problems surface. Also, rename the package to a descriptive name.ĭouble click on the XML Source to browse to the location of the XML file as shown below. Be sure to name the new solution and project appropriately as shown below. The SSIS import process starts with creating a new SSIS solution and project in SQL Server Data Tools (SSDT formerly known as BIDS or Business Intelligence Design Studio). Thus, an XML file is often self defining although special files called XML Schema Definition files (XSD) can also be used to validate, format, and describe a particular XML file.
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Also, XML files are all about the information and data within a file and not about how to display the data or information. Furthermore, and contrary to HTML, each tag is not predefined, but is established by the users who generates the files. Just like HTML, XML and XML files use tags in XML's case, these tags are used to define, describe, structure, and nest data. First, an XML file is an extensible Markup Language file XML itself is a Markup Language which shares some similarities to HTML. XML files are no exception to this statement as Integration Services can load various XML files at various levels of complexity.īefore we dive into the load process, we need to cover a few basics about XML files. SSIS is a robust and versatile ETL tool that can handle most any type of load process that it is tasked with completing.
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