Re: We are not following the spec for HAVING without GROUP

Mark Shewmaker <mark@primefactor.com>

From: Mark Shewmaker <mark@primefactor.com>
To: pgsql-hackers@postgresql.org, pgsql-bugs@postgresql.org
Date: 2005-03-10T05:20:06Z
Lists: pgsql-bugs, pgsql-hackers
On Wed, 2005-03-09 at 21:21 -0500, Tom Lane wrote: 
> Comments?  Can anyone confirm whether DB2 or other databases allow
> ungrouped column references with HAVING?

In Sybase:

    1> select 2 as id, max(myfield) from mytable where 2=1
    2> go
     id
     ----------- ----------
               2 NULL

    (1 row affected)
    1> select 2 as id, max(myfield) from mytable having 2=1
    2> go
     id
     ----------- ----------

    (0 rows affected)

-- 
Mark Shewmaker
mark@primefactor.com