| From: | Alvaro Herrera <alvherre(at)commandprompt(dot)com> |
|---|---|
| To: | Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Robert Haas <robertmhaas(at)gmail(dot)com>, Andrew Dunstan <andrew(at)dunslane(dot)net>, David Fetter <david(at)fetter(dot)org>, Hitoshi Harada <umi(dot)tanuki(at)gmail(dot)com>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: TODO items for window functions |
| Date: | 2008-12-31 12:02:12 |
| Message-ID: | 20081231120211.GB3809@alvh.no-ip.org |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
Heikki Linnakangas escribió:
> Tom Lane wrote:
>> I am not thrilled about inventing a new column for this, but how about
>> a display like so:
>>
>> regression=# \df nth_value
>> List of functions
>> Schema | Name | Result data type | Argument data types
>> ------------+-----------+------------------+---------------------------------
>> pg_catalog | nth_value | anyelement | anyelement, integer OVER window
>>
>> or some other addition that only shows up when needed.
>
> That looks like "OVER window" is associated with the "integer", like
> DEFAULT. I don't have any better suggestions, though.
List of functions
Schema | Name | Result data type | Argument data types
------------+-----------+------------------+-----------------------------------
pg_catalog | nth_value | anyelement | (anyelement, integer) OVER window
--
Alvaro Herrera http://www.CommandPrompt.com/
PostgreSQL Replication, Consulting, Custom Development, 24x7 support
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Stephen R. van den Berg | 2008-12-31 12:33:56 | Lockfree hashtables |
| Previous Message | Peter Eisentraut | 2008-12-31 12:00:55 | Re: pg_pltemplate entries for external PLs |