Hello Olaf,

> Oldstatus = oldstatus || oldstatpos; sadly, as result the

oldstatus-variable

> has the value NULL. The variable was supposed to 'oldstatpos + oldstatpos'
> and not null.
>
>
>
> Please, can you help me what's the matter?

NULL + (or || ) something becomes NULL.

If you want to transmogrify NULL into something else, you might
want to take a look at COALESCE, it's in the Docs folder.

Martijn Tonies
Database Workbench - development tool for Firebird and more!
Upscene Productions
http://www.upscene.com
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http://blog.upscene.com/martijn/
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