Too small new limit of alias length
-----------------------------------

                 Key: CORE-5282
                 URL: http://tracker.firebirdsql.org/browse/CORE-5282
             Project: Firebird Core
          Issue Type: Bug
          Components: Engine
    Affects Versions: 3.0.0
            Reporter: Sergey
            Priority: Critical


The new limit of alias names to 31 bytes (of utf-8 presentation) breaks 
queries, with aliases with some non-latin characters which length is not 
exceeds 31 symbols.
I consider it as a regression because on firebird 2.5 queries like this:
select 1 "абвгдежзиклмнопрстуфхцчшщъыьэюя" /*31 cyrillic symbols*/  from  
RDB$DATABASE
works fine as excepted, without any alias truncation and without any problems. 
In project I have a lot of reports (hundreds) those use queries with such 
aliases, with cyrillics, but strongly with length <= 31 symbols.  This problem 
stops me to migrate to firebird 3.

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