Postgres Pro
Downloads
Home   >   mailing lists

Thread: current_timestamp - 20 minutes

current_timestamp - 20 minutes

From
Matthew Terenzio
Date:

I 'm storing things in a table with now() and I want to select * from
theTable WHERE the Timestamp is > the current time - 20 minutes

Anyone know the correct syntax. I was trying something like:

WHERE timestamp_field > (timestamp now() - interval '20 minutes')

and will continue reading the manual

Re: current_timestamp - 20 minutes

From
"Joshua D. Drake"
Date:
Matthew Terenzio wrote:
>
>
> I 'm storing things in a table with now() and I want to select * from
> theTable WHERE the Timestamp is > the current time - 20 minutes
>
> Anyone know the correct syntax. I was trying something like:
>
> WHERE timestamp_field > (timestamp now() - interval '20 minutes')

  select (now() - interval '20 min');

Sincerely,

Joshua D. Drake


>
> and will continue reading the manual
>
>
> ---------------------------(end of broadcast)---------------------------
> TIP 9: In versions below 8.0, the planner will ignore your desire to
>       choose an index scan if your joining column's datatypes do not
>       match


--
Your PostgreSQL solutions provider, Command Prompt, Inc.
24x7 support - 1.800.492.2240, programming, and consulting
Home of PostgreSQL Replicator, plPHP, plPerlNG and pgPHPToolkit
http://www.commandprompt.com / http://www.postgresql.org

Re: current_timestamp - 20 minutes

From
Matthew Terenzio
Date:
On Jul 12, 2005, at 11:43 PM, Joshua D. Drake wrote:

> Matthew Terenzio wrote:
>> I 'm storing things in a table with now() and I want to select * from
>> theTable WHERE the Timestamp is > the current time - 20 minutes
>> Anyone know the correct syntax. I was trying something like:
>> WHERE timestamp_field > (timestamp now() - interval '20 minutes')
>
>  select (now() - interval '20 min');

Gotcha. I owe you another one.


>
> Sincerely,
>
> Joshua D. Drake
>
>
>> and will continue reading the manual
>> ---------------------------(end of
>> broadcast)---------------------------
>> TIP 9: In versions below 8.0, the planner will ignore your desire to
>>       choose an index scan if your joining column's datatypes do not
>>       match
>
>
> --
> Your PostgreSQL solutions provider, Command Prompt, Inc.
> 24x7 support - 1.800.492.2240, programming, and consulting
> Home of PostgreSQL Replicator, plPHP, plPerlNG and pgPHPToolkit
> http://www.commandprompt.com / http://www.postgresql.org
>