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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

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