sem.coalesce
sem.coalesce( parameter1 as Sequence, [parameterN as item()*,...] ) as Sequence
Summary
Returns the value of the first argument that evaluates without error. This XQuery function backs up the SPARQL COALESCE() functional form.
This function is a built-in.
| Parameters | |
|---|---|
| parameter1 | A value. |
| parameterN | A value. You can specify as many parameters as you need. |
Example
sem.coalesce("foo", "bar", "baz");
=>
foo