Em 18/07/2017 17:35, Vlad Khorsun via Firebird-devel escreveu: > > Algorithm name could define result length.
Yes, for constants. > If alg name is passed as > parameter, we could use maximum known length (of all known algs) at > prepare time. > Maximum known length means if a new algorithm is added, it will be increased and that seems not good. It may break applications. Firebird has a interesting but unused feature, which is: - A system function can declare a fixed length, say VARCHAR(20) - Actual function execution can return VARCHAR(30) - User CAST function execution to return VARCHAR(30) - It works! :) Adriano ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot Firebird-Devel mailing list, web interface at https://lists.sourceforge.net/lists/listinfo/firebird-devel
