alias
Creates an alias to a resource. This simplifies queries by using qualified names instead of element references within constraints.
The general syntax is as follows:
alias resource as namespace;
Where resource is the URI prefix to abbreviate and namespace is an unquoted XML namespace prefix.
For example:
alias <http://purl.org/dc/elements/1.1/> as dcns;
alias <http://www.w3.org/1999/02/22-rdf-syntax-ns#> as rdfns;
Note - Alias substitution only occurs in the where clause of select commands.
For example, the where clause in the following select command uses a complete URI.
select $obj $pred from <http://purl.org/dc/elements/1.1/>
where <http://purl.org/dc/elements/1.1/title> $pred $obj;
With the alias command, this can be simplified to:
alias <http://purl.org/dc/elements/1.1/> as dc;
select $obj $pred from <http://purl.org/dc/elements/1.1/> where <dc:title> $pred $obj;
