| From: | Mike Fowler <mike(at)mlfowler(dot)com> |
|---|---|
| To: | Kevin Grittner <Kevin(dot)Grittner(at)wicourts(dot)gov> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Jeff Wu <jwu(at)atlassian(dot)com>, pgsql-bugs(at)postgresql(dot)org |
| Subject: | Re: BUG #5974: UNION construct type cast gives poor error message |
| Date: | 2011-04-14 16:47:37 |
| Message-ID: | 4DA72529.7080505@mlfowler.com |
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| Thread: | |
| Lists: | pgsql-bugs |
On 14/04/11 17:05, Kevin Grittner wrote:
> SELECT 1,null,null FROM DUAL
> UNION
> SELECT 2,3,null FROM DUAL
> UNION
> SELECT 3,null,4 FROM DUAL
Sadly I can't profess to knowing Oracle, however if I run the query as
suggested I get:
--------------------
1 | NULL | NULL
--------------------
1 | <null> | <null>
2 | 3 | <null>
3 | <null> | 4
So to summarise, Oracle and PostgreSQL need minor tweaks to run cleanly
and SQLServer and MySQL do not. Given that the change for PostgreSQL is
so minor, I vote for changing the error message as Jeff suggests in the
interim to help users while the standards argument continues. Patch
attached.
Regards,
--
Mike Fowler
Registered Linux user: 379787
| Attachment | Content-Type | Size |
|---|---|---|
| bug-5974.patch | text/x-diff | 803 bytes |
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