[GENERAL] is this a known bug in 9.6?
| От | Torsten Förtsch |
|---|---|
| Тема | [GENERAL] is this a known bug in 9.6? |
| Дата | |
| Msg-id | CAKkG4_=gjY5QiHtqSZyWMwDuTd_CftKoTaCqxjJ7uUz1-Gw=qw@mail.gmail.com обсуждение исходный текст |
| Ответы |
Re: [GENERAL] is this a known bug in 9.6?
|
| Список | pgsql-general |
Hi,
this is a stock PGDG 9.6:
postgres=# with i(x) as (values (1::int)), j(y) as (values (2::int)) select x from (select x from i union all select y from j) b;
x
---
1
2
(2 rows)
postgres=# with i(x) as (values (1::int)), j(y) as (values (2::int)) select max(x) from (select x from i union all select y from j) b;
ERROR: could not find plan for CTE "i"
x
---
1
2
(2 rows)
postgres=# with i(x) as (values (1::int)), j(y) as (values (2::int)) select max(x) from (select x from i union all select y from j) b;
ERROR: could not find plan for CTE "i"
The same on 9.5:
postgres=# with i(x) as (values (1::int)), j(y) as (values (2::int)) select x from (select x from i union all select y from j) b;
x
---
1
2
(2 rows)
postgres=# with i(x) as (values (1::int)), j(y) as (values (2::int)) select max(x) from (select x from i union all select y from j) b;
max
-----
2
(1 row)
x
---
1
2
(2 rows)
postgres=# with i(x) as (values (1::int)), j(y) as (values (2::int)) select max(x) from (select x from i union all select y from j) b;
max
-----
2
(1 row)
Is this a bug or is my assumption that this should work wrong?
Both the aggregate and the UNION are required to trigger the bug:
postgres=# with i(x) as (values (1::int)) select x from (select x from i union all select 3::int) b;
x
---
1
3
(2 rows)
postgres=# with i(x) as (values (1::int)) select max(x) from (select x from i) b;
max
-----
1
(1 row)
postgres=# with i(x) as (values (1::int)) select max(x) from (select x from i union all select 3::int) b;
ERROR: could not find plan for CTE "i"
x
---
1
3
(2 rows)
postgres=# with i(x) as (values (1::int)) select max(x) from (select x from i) b;
max
-----
1
(1 row)
postgres=# with i(x) as (values (1::int)) select max(x) from (select x from i union all select 3::int) b;
ERROR: could not find plan for CTE "i"
Thanks,
Torsten
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