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XQuery sem:coalesce

MarkLogic 12 EA 1 Product Documentation
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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