Error:
Stack Overflow: Try tail recursion?
Optimized Query:
db:exists("3860_Master_Voice_JULY-21_Unbilled", "SSBS_9038343_01131130904_02JUL21.xml")
Query:
db:exists("3860_Master_Voice_JULY-21_Unbilled","SSBS_9038343_01131130904_02JUL21.xml")
Query Plan:
<QueryPlan compiled="true" updating="false">
  <DbExists name="db:exists" type="xs:boolean" size="1">
    <Str type="xs:string" size="1">3860_Master_Voice_JULY-21_Unbilled</Str>
    <Str type="xs:string" size="1">SSBS_9038343_01131130904_02JUL21.xml</Str>
  </DbExists>
</QueryPlan>