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generate-an-inline-xdr-schema.md

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title Generate an Inline XDR Schema | Microsoft Docs
ms.custom
ms.date 03/01/2017
ms.prod sql
ms.prod_service database-engine
ms.reviewer
ms.technology xml
ms.topic conceptual
helpviewer_keywords
XDR schemas [SQL Server]
inline XDR schema generation [SQL Server]
XMLDATA option
FOR XML clause, inline XDR schema generation
ms.assetid 2a40d617-9724-4f7d-80a4-a85c702f14d0
author MightyPen
ms.author genemi

Generate an Inline XDR Schema

[!INCLUDEappliesto-ss-asdb-xxxx-xxx-md] The XMLDATA directive in FOR XML returns an inline XDR schema together with the query result. However, the XDR schema does not support all the new data types and other enhancements introduced in [!INCLUDEssVersion2005] and later versions. Instead, you can request an inline XSD schema by using the XMLSCHEMA directive.

Important

The XMLDATA directive to the FOR XML option is deprecated. Use XSD generation in the case of RAW and AUTO modes. There is no replacement for the XMLDATA directive in EXPLICIT mode. [!INCLUDEssNoteDepFutureAvoid]

Also note the following about the inline XDR schema support:

  • If the FOR XML query result includes columns of xml type and you request an inline XDR schema, an error is returned. Inline XDR does not support these types.

  • The (n)varchar(max) and (n)varbinary(max) types will be mapped to (n)varchar(n) and varbinary(n), respectively.

  • When compatibility mode is set to 90 or higher, timestamp values are considered as varbinary(8) data, are treated like binary data, and are returned in the result as follows:

    • Base 64 encoding is used when binary base64 is specified.

    • URL encoding is used in AUTO mode when binary base64 is not specified.