17.06.2016 10:56, Dimitry Sibiryakov [email protected] wrote: > >>> Is there the limitation of 31 bytes for column names in the new FB 3? >> >> 31 CHARACTERS - as before > > No, it is 31 byte.
Correct, the limit is 31 *bytes*. The legacy UNICODE_FSS charset is multi-byte (up to three bytes per character) in user-defined tables, but it's treated specially for system tables, limiting the length to 31 bytes, not characters (like it was a single-byte charset). The reasons are mainly historical (thanks to Borland) and related to backward compatibility of API and GPRE-generated code. v3 preserves this legacy behaviour. v4 resolves this issue from multiple angles: - switching to UTF8 instead of UNICODE_FSS - counting the length in characters instead of bytes - increasing the limit to 63 characters (at the moment, may change before the final release) Dmitry ------------------------------------ ------------------------------------ ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Visit http://www.firebirdsql.org and click the Documentation item on the main (top) menu. Try FAQ and other links from the left-side menu there. Also search the knowledgebases at http://www.ibphoenix.com/resources/documents/ ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ------------------------------------ Yahoo Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/firebird-support/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/firebird-support/join (Yahoo! ID required) <*> To change settings via email: [email protected] [email protected] <*> To unsubscribe from this group, send an email to: [email protected] <*> Your use of Yahoo Groups is subject to: https://info.yahoo.com/legal/us/yahoo/utos/terms/
