SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function CAST (children 1)
     ExpressionList (children 2)
      Literal \'
\\0\'
      Literal \'AggregateFunction(nothingArrayIf, Array(Nullable(Nothing)), Nullable(Nothing))\'