This does make his code fall under the limitations of unix timestamps.
In 30 years or so when we are all retired millionaires ;) some poor
intern is going to have to figure out why the hour diff calculation is
failing.
[EMAIL PROTECTED] wrote:
Gyurasits Zoltán <[EMAIL PROTECTED]> wrote on 07/27/2005 12:57:42 PM:
TIMESTAMP() is available as of MySQL 4.1.1.
I can't use this version because replication working :(
I use version 4.0.22
----- Original Message -----
From: "Martijn Tonies" <[EMAIL PROTECTED]>
To: "Gyurasits Zoltán" <[EMAIL PROTECTED]>; <mysql@lists.mysql.com>
Sent: Wednesday, July 27, 2005 6:31 PM
Subject: Re: Hour counts
Hi,
Check out the TIMEDIFF function.
With regards,
Martijn Tonies
Database Workbench - tool for InterBase, Firebird, MySQL, Oracle & MS
SQL
Server
Upscene Productions
http://www.upscene.com
Database development questions? Check the forum!
http://www.databasedevelopmentforum.com
I would like to calculate the hour counts from 2 'datetime'.
Example: 2005-07-27 18:00 and 2005-07-27 19:30 => 1,5 hour
I try this.... but not good!
R1 : munkaido_end-munkaido_start /simple substract/
R2 : ROUND(ROUND((end-start)/10000)+
(((end-start)/1000-(ROUND((end-start)/10000)*10))/6),1) /good if is
in
one
day/
R3 : ROUND((end-start)/10000)-76 /-76 because from 14. to 15. I don't
understand/
start end R1 R2 R3
07-14 15:00 07-14 17:30 23000 2.5 -74
07-14 23:00 07-15 01:30 783000 78.5 2
07-14 15:00 07-15 02:30 873000 87.5 11
07-14 15:00 07-14 16:00 10000 1 -75
Please help me... (exist a function for this situation?)
Tnx!
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Then your next option is to convert your datetime values to "seconds since
epoch" by using UNIX_TIMESTAMP() (see the same link everyone else has
already given you for details).
mysql>SELECT (unix_timestamp('2005-07-27 19:30:00') -
unix_timestamp('2005-07-27 18:00:00'))/3600;
+--------------------------------------------------------------------------------------+
| (unix_timestamp('2005-07-27 19:30:00') - unix_timestamp('2005-07-27
18:00:00'))/3600 |
+--------------------------------------------------------------------------------------+
| 1.50 |
+--------------------------------------------------------------------------------------+
1 row in set (0.00 sec)
Shawn Green
Database Administrator
Unimin Corporation - Spruce Pine
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