SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 4)
   ExpressionList (children 6)
    Identifier a
    Identifier b
    Identifier c
    Identifier d
    Identifier e
    Identifier f
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Subquery (alias t) (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 1)
          ExpressionList (children 6)
           Literal UInt64_44 (alias a)
           Literal UInt64_88 (alias b)
           Literal UInt64_13 (alias c)
           Literal UInt64_14 (alias d)
           Literal UInt64_15 (alias e)
           Literal UInt64_16 (alias f)
   ExpressionList (children 6)
    Literal UInt64_1
    Literal UInt64_2
    Literal UInt64_3
    Literal Int64_-3
    Literal Int64_-2
    Literal Int64_-1
   ExpressionList (children 1)
    OrderByElement (children 1)
     Identifier a