Insert NULL into identity column with auth generated value
----------------------------------------------------------

                 Key: CORE-5460
                 URL: http://tracker.firebirdsql.org/browse/CORE-5460
             Project: Firebird Core
          Issue Type: Improvement
    Affects Versions: 3.0.0
         Environment: Windows 10 64bit, LibreOffice 5.3.0RC1
            Reporter: Gerhard S


Could you support inserting rows where the value for the identity column is 
passed as NULL in order to increment the value automatically?.

Example:
create table testtbl (
id integer generated by default as identity (START WITH 0) NOT NULL primary key,
name varchar(15)
);

insert into testtbl values (NULL, 'name1');

This only makes sense, if the column is NOT NULL, I guess. Other database 
systems such as MySQL, HSQLDB, MariaDB allow that.

I am aware that the following already works, but using NULL is more flexible 
and simpler than
insert into testtbl (name) values ('name1');

By the way, I am using Firebird in conjunction with LibreOffice 5.3.0RC1.


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