<sql_parameter_reference xmlns="http://www.sqlparser.com/xml/ansi2003"> <basic_identifier_chain>{1,1}</basic_identifier_chain> </sql_parameter_reference>
<xs:element name="sql_parameter_reference"> <xs:complexType> <xs:sequence> <xs:element ref="basic_identifier_chain"/> </xs:sequence> </xs:complexType> </xs:element>