Subject Firebird 3.0 Column name length
Author Nikolay Marinov
using WIN1251 , this query works fine in FB 2.5 

select '123' as "Това е едно дълго име на колона" from rdb$database; 

under FB 3.0 it doesn't:  
can't format message 13:198 -- message file C:\Windows\SYSTEM32\firebird.msg not found.
arithmetic exception, numeric overflow, or string truncation.
string right truncation.
expected length 31, actual 31.