SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 2)
    Literal \'a3,a4 1..1\'
    Function arrayEnumerateUniqRanked (children 1)
     ExpressionList (children 2)
      Identifier a3
      Identifier a4
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier arrays_test
   ExpressionList (children 2)
    OrderByElement (children 1)
     Identifier a3
    OrderByElement (children 1)
     Identifier a4