It seems like you're running into bug #116065: DBD-Sybase does not support [n]varchar(max). Unfortunately it doesn't seem like there is a patch (yet), so if choosing a large upper limit is an option for you, you might have to use that workaround for now.

In reply to Re: DBD::SYBASE varchar(max) problem by haukex
in thread DBD::SYBASE varchar(max) problem by Anonymous Monk

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