Mapping XSD Data Types to XPath Data Types [SQLXML 4.0]

When an XPath query is executed against an XSD schema and the XSD type is specified in the xsd:type attribute, XPath uses the data type specified when it processes the query.

The XPath data type of a node is derived from the XSD data type in the schema, as shown in the following table. (The EmployeeID node is used for the purpose of illustration.)

XSD data type	XDR data type	Equivalent XPath data type	SQL Server conversion that is used
Base64Binary HexBinary	None bin.base64bin.hex	Not applicable	None EmployeeID
Boolean	boolean	boolean	CONVERT(bit, EmployeeID)
Decimal, integer, float, byte, short, int, long, float, double, unsignedByte, unsignedShort, unsignedInt, unsignedLong	number, int, float,i1, i2, i4, i8,r4, r8ui1, ui2, ui4, ui8	number	CONVERT(float(53), EmployeeID)
id, idref, idrefsentity, entities, notation, nmtoken, nmtokens, DateTime, string, AnyURI	id, idref, idrefsentity, entities, enumeration, notation, nmtoken, nmtokens, char, dateTime, dateTime.tz, string, uri, uuid	string	CONVERT(nvarchar(4000), EmployeeID, 126)
decimal	fixed14.4	Not applicable (There is no data type in XPath that is equivalent to the fixed14.4 XDR data type.)	CONVERT(money, EmployeeID)
date	date	string	LEFT(CONVERT(nvarchar(4000), EmployeeID, 126), 10)
time	time time.tz	string	SUBSTRING(CONVERT(nvarchar(4000), EmployeeID, 126), 1 + CHARINDEX(N'T', CONVERT(nvarchar(4000), EmployeeID, 126)), 24)