| From: | Jaime Casanova <systemguards(at)gmail(dot)com> |
|---|---|
| To: | pgsql-hackers(at)postgresql(dot)org |
| Cc: | pgsql-bugs(at)postgresql(dot)org |
| Subject: | Re: We are not following the spec for HAVING without GROUP BY |
| Date: | 2005-03-10 20:14:23 |
| Message-ID: | c2d9e70e05031012143fddf4c1@mail.gmail.com |
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| Lists: | pgsql-bugs pgsql-hackers |
On Thu, 10 Mar 2005 12:44:50 -0500, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> Would those of you with access to other DBMSes try this:
>
On informix 9.21.UC4
> create table tab (col integer);
> select 1 from tab having 1=0;
>
returns no rows
> select 1 from tab having 1=1;
>
returns no rows
> insert into tab values(1);
> insert into tab values(2);
> select 1 from tab having 1=0;
>
returns no rows
> select 1 from tab having 1=1;
>
returns 2 rows
regards,
Jaime Casanova
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