{ [t_alias.] *
| { query_name.*
  | [ schema. ]
    { table | view | materialized view } .*
  | expr [ [ AS ] c_alias ]
  }
    [, { query_name.*
       | [ schema. ]
         { table | view | materialized view } .*
       | expr [ [ AS ] c_alias ]
       }
    ]...
}