SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 1)
    Function dictGetOrDefault (children 1)
     ExpressionList (children 4)
      Literal \'regexp_dict1\'
      Literal Tuple_(\'name\', \'version\', \'comment\')
      Literal \'30/tclwebkit\'
      Literal Tuple_(\'\', UInt64_0, \'default\')
