Did you try to put (-1) in it?
Bye!
Facundo Batista
Gestión de Red
[EMAIL PROTECTED]
(5411) 4819-4358
#-------Mensaje original-----
#--De: Ashley M. Kirchner [mailto:[EMAIL PROTECTED]]
#--Enviado el: Viernes 20 de Abril de 2001 8:15 PM
#--Para: MySQL Mailing List
#--Asunto: largest timestamp value
#--
#--
#--
#-- What's the largest possible timestamp value before it rolls over?
#--I'm trying to figure out what's the best way to do the following. I
#--have a table that has these three fields in it:
#--
#-- priority int(3)
#-- end_time timestamp(14)
#-- start_time timestamp(14)
#--
#-- NOTE: only start_time gets inserted as Now() (or NULL so it
#--automatically gets set) end_time is a variable that gets
#--set depending
#--on what the user picks for time period.
#--
#-- And I'd like to select and order like:
#--
#-- select * from table order by priority, end_time, start_time;
#--
#--
#-- Now, some rows will have a valid start, and end times.
#--Others will
#--have only a valid start time, and an undefined end time, or
#--infinite if
#--you will. However, if I don't fill in a value for that field, MySQL
#--dutifully puts in 00000000000000 for me, and when I perform the above
#--query, I get something like this:
#--
#--+----------+----------------+----------------+
#--| priority | end_time | start_time |
#--+----------+----------------+----------------+
#--| 0 | 00000000000000 | 20010329023143 |
#--| 0 | 20010330231405 | 20010329021805 |
#--| 0 | 20010331012712 | 20010330162312 |
#--| 10 | 20010422051135 | 20010419161205 |
#--| 10 | 20010422051135 | 20010419162335 |
#--| 50 | 20010330131222 | 20010329015222 |
#--| 50 | 20010330131703 | 20010329015703 |
#--| 100 | 20010331192630 | 20010329014630 |
#--| 100 | 20010401211100 | 20010330023100 |
#--+----------+----------------+----------------+
#--
#-- However, I want that first row, to end up last within
#--that priority
#--level (so drop it to line 3). The only thing I can think of
#--is to put
#--in some insanely large value for that timestamp, so that the select
#--clause works.
#--
#-- So, I need to figure out what's the largest possible
#--amount of time
#--I can put in, and make it like a 'dead end' value. Anything that has
#--that value is considered infinite. I suppose I can put in
#--20380101000000...but is that the ceiling of MySQL?
#--
#-- Unless there's another way?
#--
#----
#--W |
#-- | I haven't lost my mind; it's backed up on tape somewhere.
#--
#--|____________________________________________________________________
#--
#--~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#-- Ashley M. Kirchner <mailto:[EMAIL PROTECTED]> .
#--303.442.6410 x130
#-- SysAdmin / Websmith .
#--800.441.3873 x130
#-- Photo Craft Laboratories, Inc. . eFax
#--248.671.0909
#-- http://www.pcraft.com . 3550
#--Arapahoe Ave #6
#-- .................. . . . . Boulder, CO
#--80303, USA
#--
#--
#--
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