Re: [SQL] datetime query issue

um, this was probably unintelligible. this is the table:

+----------------------------------+----------------------------------+-------+
|              Field               |              Type                | Length|
+----------------------------------+----------------------------------+-------+
| source_numeric                   | int8 not null                    |     8 |
| destination_numeric              | int8 not null                    |     8 |
| source                           | text not null                    |   var |
| destination                      | text not null                    |   var |
| bytes                            | int8 not null                    |     8 |
| date                             | datetime                         |     8 |
+----------------------------------+----------------------------------+-------+

every hour, a set of rows is added to this table with the current timestamp on 
each row. i guess i need a function to extract the time from datetime. date_trunc
may be what i am looking for but i couldn't find information in the documentation
as to how to use these functions.


On Sat, Aug 28, 1999 at 03:35:07PM +0200, Frank Joerdens wrote:
> I'm not sure how to go about this: I want to find all rows with a timestamp 
> between, say 6 a.m. and 10 p.m. for any number of days. The column format is
> datetime. How do I extract the 'time of the day' information from this
> column? What I can think of is to create a view for every single day where datetime
> is > 6 and < 10 and then another query on all views together but that doesn't sound 
> very elegant and would be a real memory hog for a large number of days.
> 
> Any better ideas?
> 
> Thanks
> 
> Frank
> 
> 
> ************