SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 3)
    Identifier l.id
    Identifier l.value
    Identifier r.description
   TablesInSelectQuery (children 2)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier t_l_small (alias l)
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      TableIdentifier t_r_small (alias r)
     TableJoin (children 1)
      Function equals (children 1)
       ExpressionList (children 2)
        Identifier l.id
        Identifier r.id
   ExpressionList (children 2)
    OrderByElement (children 1)
     Function coalesce (children 1)
      ExpressionList (children 2)
       Identifier l.id
       Identifier r.id
    OrderByElement (children 1)
     Identifier r.id
