Subject | Re: [firebird-support] Re: FB & VFP6 How to store empty date |
---|---|
Author | Martijn Tonies |
Post date | 2004-09-08T07:32:20Z |
Hi,
An empty string ( '' ) does exist, but an empty date doesn't, unless
you choose the/a zero-date, eg: 1/1/1899 or so.
Martijn Tonies
Database Workbench - developer tool for InterBase, Firebird, MySQL & MS SQL
Server.
Upscene Productions
http://www.upscene.com
> >Then what is a "blank date"?In this case, the birth-date is "unknown", in other words: NULL.
>
> Something like NOT NULL but not filled either <g>. In VFP we represent it
> with {} or { / / }
>
> Actually what happens is when a date is optional like: Please enter you
> birth date (optional)? People may not want to reveal the date and would
> like to keep it empty.
An empty string ( '' ) does exist, but an empty date doesn't, unless
you choose the/a zero-date, eg: 1/1/1899 or so.
>Now filling this to a date however obscure likebirth
> 01/01/1245 will have problem when you would like to know about filled
> dates.With regards,
>
> Hasn't anybody come across situations like above, if so please let me know
> how they have handles it in the past.
Martijn Tonies
Database Workbench - developer tool for InterBase, Firebird, MySQL & MS SQL
Server.
Upscene Productions
http://www.upscene.com