Re: [postmodern-devel] TRUNCATE missing

(def-sql-op :truncate (&rest args)  (split-on-keywords ((tables *) (only - ?) (identity - ?) (fkey - ?))      (cons :tables args)    (let ((identity-str (case identity                          (:restart-identity "RESTART IDENTITY ")                          (:continue-identity "CONTINUE IDENTITY ")))

Where are you expecting :restart-identity or :continue-identity to come from? An argumentless split-on-keywords arg will simply be T when given.

(fkey-str (case fkey                      (:cascade "CASCADE ")                      (:restrict "RESTRICT "))))

Same here -- you don't allow any arguments to :fkey.