Oracle não suporta alias de tabela com o
as . Por exemplo:
SQL> select 1
2 from dual as a;
from dual as a
*
ERROR at line 2:
ORA-00933: SQL command not properly ended
SQL> select 1
2 from dual a;
1
----------
1
O mesmo caminho:
SQL> select *
2 from (
3 select 1 from dual
4 ) as a;
) as a
*
ERROR at line 4:
ORA-00933: SQL command not properly ended
SQL> select *
2 from (
3 select 1 from dual
4 ) a;
1
----------
1
O alias da coluna pode ser com e sem o
as :SQL> select 1 as one, 2 two
2 from dual;
ONE TWO
---------- ----------
1 2
