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From:Martijn Tonies Date:February 15 2005 6:01pm
Subject:Re: one hour is/is not 60 minutes, that's the question...
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Hello,

> mysql> select version();
> +--------------------+
> | version()          |
> +--------------------+
> | 4.1.9-standard-log |
> +--------------------+
> 1 row in set (0.00 sec)
>
> mysql>

Although I'm not fully aware of MySQL time/date symantecs,
I would like to make a comment...

>
> mysql> select addtime(now(), '00:00:00');
> +----------------------------+
> | addtime(now(), '00:00:00') |
> +----------------------------+
> | 2005-02-15 16:49:17        |
> +----------------------------+
> 1 row in set (0.00 sec)
>
> mysql> select addtime(now(), '00:60:00');        
> <<<<<<<<<<<<<<<<<<<

There's no such time.

00:60:00 is a duration, not a time. So I too wonder
what the warning was...

> +----------------------------+
> | addtime(now(), '00:60:00') |
> +----------------------------+
> | NULL                       |
> +----------------------------+
> 1 row in set, 1 warning (0.00 sec)
>
> mysql> select addtime(now(), '01:00:00');

This is a valid time. Namely, 01:00 AM.

> +----------------------------+
> | addtime(now(), '01:00:00') |
> +----------------------------+
> | 2005-02-15 17:50:27        |
> +----------------------------+
> 1 row in set (0.00 sec)
>
>
>
> in my opinion the result of the second and third example above must be
> the same.

Perhaps there's another function to add durations?

With regards,

Martijn Tonies
Database Workbench - developer tool for InterBase, Firebird, MySQL & MS SQL
Server
Upscene Productions
http://www.upscene.com

Thread
one hour is/is not 60 minutes, that's the question...schlubediwup15 Feb
  • Re: one hour is/is not 60 minutes, that's the question...Rich Lafferty15 Feb
  • Re: one hour is/is not 60 minutes, that's the question...Martijn Tonies15 Feb
  • Re: one hour is/is not 60 minutes, that's the question...Victor Pendleton15 Feb
  • Re: one hour is/is not 60 minutes, that's the question...Harald Fuchs15 Feb
RE: one hour is/is not 60 minutes, that's the question...Tom Crimmins15 Feb