At 11:36 AM 24/09/2004 +0300, you wrote:

>Is this correct that SUBSTRING is not supported in Interbase 6?

Yes, it is correct.

>In Helen's book it was said that "availability:any platform", but my
>clients who don't use firebird get syntax error :(

Helen's book is about Firebird (hence the title). SUBSTRING() was
introduced in Firebird 1.
NB "platform" means operating system, not dbms vendor.

Helen