<datetime_primary xmlns="http://www.sqlparser.com/xml/ansi2003"> <value_expression_primary>{1,1}</value_expression_primary> <datetime_value_function>{1,1}</datetime_value_function> </datetime_primary>
<xs:element name="datetime_primary"> <xs:complexType> <xs:choice> <xs:element ref="value_expression_primary"/> <xs:element ref="datetime_value_function"/> </xs:choice> </xs:complexType> </xs:element>