drop-xml-schema-collection-transact-sql.md

title	DROP XML SCHEMA COLLECTION (Transact-SQL)
description	DROP XML SCHEMA COLLECTION (Transact-SQL)
author	WilliamDAssafMSFT
ms.author	wiassaf
ms.date	11/25/2015
ms.service	sql
ms.subservice	t-sql
ms.topic	reference
f1_keywords	DROP XML SCHEMA COLLECTION DROP_XML_SCHEMA_COLLECTION_TSQL
helpviewer_keywords	deleting XML schema collections XML schema collections [SQL Server], removing schema collections [SQL Server], removing removing XML schema collections dropping XML schema collections DROP XML SCHEMA COLLECTION statement
dev_langs	TSQL

DROP XML SCHEMA COLLECTION (Transact-SQL)

[!INCLUDE SQL Server]

Deletes the whole XML schema collection and all of its components.

Transact-SQL Syntax Conventions

Syntax

DROP XML SCHEMA COLLECTION [ relational_schema. ]sql_identifier  

[!INCLUDEsql-server-tsql-previous-offline-documentation]

Arguments

relational_schema
Identifies the relational schema name. If not specified, the default relational schema is assumed.

sql_identifier
Name of the XML schema collection to drop.

Remarks

Dropping an XML schema collection is a transactional operation. When you drop an XML schema collection inside a transaction and later roll back the transaction, the XML schema collection isn't dropped.

You can't drop an XML schema collection when it's in use. So, the collection being dropped can't be in any of the following conditions:

• Associated with any xml type parameter or column.

• Specified in any table constraints.

• Referenced in a schema-bound function or stored procedure. For example, the following function locks the XML schema collection MyCollection because the function specifies WITH SCHEMABINDING. If you remove it, there's no lock on the XML SCHEMA COLLECTION.

  CREATE FUNCTION dbo.MyFunction()  
  RETURNS int  
  WITH SCHEMABINDING  
  AS  
  BEGIN  
     /* some code may go here */
     DECLARE @x XML(MyCollection)  
     /* more code may go here */
  END;  

Permissions

To drop an XML SCHEMA COLLECTION requires DROP permission on the collection.

Examples

The following example shows removing an XML schema collection.

DROP XML SCHEMA COLLECTION ManuInstructionsSchemaCollection;  
GO  

See Also

CREATE XML SCHEMA COLLECTION (Transact-SQL)
ALTER XML SCHEMA COLLECTION (Transact-SQL)
EVENTDATA (Transact-SQL)
Compare Typed XML to Untyped XML
Requirements and Limitations for XML Schema Collections on the Server