API query operators - is there a way to achieve 'starts with' ?

Hi

I have anotherAPI query I cant find an answer to:

There are operators for 'equals' and 'contains' like this:
list&q=(alldetails~contains~island)(name~equals~something)

But is there a way of achieving

list&q=(alldetails~startswith~island)(name~equals~something)

Or having a wildcard perhaps in the search phrase like

list&q=(alldetails~equals~island*)(name~equals~something)

which would do the same thing....

Many thanks!