serialize — Serializes a value of its argument following the
rules of the host RDBMS.
string serialize (
obj any );
The serialize() function converts an object to a string as
An empty sequence is converted to an empty string.
A nonempty node-set is converted to a string by serialization of
its first node.
A non-attribute XML entity is serialized as if it is serialized
by http() function. In other words, the result is a plain text of
XML syntax. For an attribute XML entity, the value of attribute is
Values of other types are converted into strings as cast(... as
varchar) do this in Virtuoso/PL, exactly.
If the argument is omitted, context node is converted instead as
if it is a node-set of one element.