SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function JSONExtract (children 1)
     ExpressionList (children 2)
      Literal \'{"a":1, "b":"417ddc5d-e556-4d27-95dd-a34d84e46a50"}\'
      Literal \'Tuple(a Int8, b UUID)\'