Generates a SPARQL coalesce() call returning the first argument that evaluates without error.
Yields the value of the first listed expression that is bound and raises no evaluation error,
scanning left to right; the call is itself unbound only when every argument is. Used to supply a
fallback where an inner expression may be unbound or out of domain. Empty argument expressions, such
as those produced by nil, are dropped before joining.
Generates a SPARQL
coalesce()call returning the first argument that evaluates without error.Yields the value of the first listed expression that is bound and raises no evaluation error, scanning left to right; the call is itself unbound only when every argument is. Used to supply a fallback where an inner expression may be unbound or out of domain. Empty argument expressions, such as those produced by nil, are dropped before joining.