SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Function count (children 1)
     ExpressionList
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier test1__fuzz_37
   ExpressionList (children 1)
    Function dictHas (children 1)
     ExpressionList (children 2)
      Literal \'non_existing_dictionary\'
      Function materialize (children 1)
       ExpressionList (children 1)
        Literal \'a\'