Na minha opinião, "Fatoração de Subconsulta Recursiva" está quebrada em 11g R2 para consultas com coluna de data ou timestamp.
with test(X) as
(
select to_date('2010-01-01','YYYY-MM-DD') from dual
union all (
select (X + 1) from test where X <= to_date('2010-01-10','YYYY-MM-DD')
)
)
select * from test;
ORA-01790
use um cast para converter o tipo de dados:
with test(X) as
(
select cast(to_date('2010-01-01','YYYY-MM-DD') as date) from dual
union all (
select (X + 1) from test where X <= to_date('2010-01-10','YYYY-MM-DD')
)
)
select * from test;
X
-------------------
2010-01-01 00:00:00
1 row selected
Lançar uma data em uma data está ajudando, mas onde estão os outros resultados?
Fica ainda melhor...
Experimente com outra data de início:
with test(X) as
(
select cast(to_date('2007-01-01','YYYY-MM-DD') as DATE) from dual
union all (
select (X + 1) from test where X <= to_date('2011-01-11','YYYY-MM-DD')
)
)
select * from test
where rownum < 10; -- important!
X
-------------------
2007-01-01 00:00:00
2006-12-31 00:00:00
2006-12-30 00:00:00
2006-12-29 00:00:00
2006-12-28 00:00:00
2006-12-27 00:00:00
2006-12-26 00:00:00
2006-12-25 00:00:00
2006-12-24 00:00:00
9 rows selected
Contando para trás? Por quê?
Atualização de 14 de janeiro de 2014: Como solução alternativa, use o CTE começando com a data de término e construindo o CTE recursivo para trás, assim:
with test(X) as
(
select cast(to_date('2011-01-20','YYYY-MM-DD') as DATE) as x from dual
union all (
select cast(X - 1 AS DATE) from test
where X > to_date('2011-01-01','YYYY-MM-DD')
)
)
select * from test
Resultados:
| X |
|--------------------------------|
| January, 20 2011 00:00:00+0000 |
| January, 19 2011 00:00:00+0000 |
| January, 18 2011 00:00:00+0000 |
| January, 17 2011 00:00:00+0000 |
| January, 16 2011 00:00:00+0000 |
| January, 15 2011 00:00:00+0000 |
| January, 14 2011 00:00:00+0000 |
| January, 13 2011 00:00:00+0000 |
| January, 12 2011 00:00:00+0000 |
| January, 11 2011 00:00:00+0000 |
| January, 10 2011 00:00:00+0000 |
| January, 09 2011 00:00:00+0000 |
| January, 08 2011 00:00:00+0000 |
| January, 07 2011 00:00:00+0000 |
| January, 06 2011 00:00:00+0000 |
| January, 05 2011 00:00:00+0000 |
| January, 04 2011 00:00:00+0000 |
| January, 03 2011 00:00:00+0000 |
| January, 02 2011 00:00:00+0000 |
| January, 01 2011 00:00:00+0000 |
Teste realizado com:
Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
