Hi,
It works fine on my machine
ibrar@ibrar-laptop:/usr/local/pgsql/bin$ ./psql postgres
psql (8.4devel)
Type "help" for help.
postgres=# SELECT res, * FROM ( SELECT
'foo'||i AS test, i AS res FROM (VALUES (1)) AS x(i) UNION ALL SELECT 'foo'||i, i FROM (VALUES
(2))AS x(i) ) AS x;res | test | res
-----+------+----- 1 | foo1 | 1 2 | foo2 | 2
(2 rows)
postgres=#
On Wed, Nov 19, 2008 at 8:38 PM, Gregory Stark <stark@enterprisedb.com> wrote:
>
> I haven't looked into what's causing it yet but...
>
> postgres=# SELECT res, * FROM (
> SELECT 'foo'||i AS test, i AS res
> FROM (VALUES (1)) AS x(i)
> UNION ALL
> SELECT 'foo'||i, i
> FROM (VALUES (2)) AS x(i)
> ) AS x;
> server closed the connection unexpectedly
> This probably means the server terminated abnormally
> before or while processing the request.
> The connection to the server was lost. Attempting reset: Failed.
>
> TRAP: FailedAssertion("!(child_attr <= new_max_attr)", File: "prepunion.c", Line: 1726)
>
>
> Works fine on 8.3 so even though that section of code in prepunion.c hasn't
> changed:
>
> postgres=# SELECT res, * FROM (SELECT 'foo'||i AS test, i AS res FROM (VALUES (1)) AS x(i) UNION ALL SELECT 'foo'||i,
iFROM (VALUES (2)) AS x(i)) AS x ;
> res | test | res
> -----+------+-----
> 1 | foo1 | 1
> 2 | foo2 | 2
> (2 rows)
>
>
>
> --
> Gregory Stark
> EnterpriseDB http://www.enterprisedb.com
> Ask me about EnterpriseDB's PostGIS support!
>
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-- Ibrar Ahmed EnterpriseDB http://www.enterprisedb.com