loc wrote:
> I'm currently using an Informix Innovator-C database with Aubit4GL and I 
> would like to migrate to
> PostgreSQL, it looks like the transition will not be too difficult, however 
> there is one feature that
> I would like added to PostgreSQL.  Where is the best place to request a 
> feature add?  With Informix
> inserting a 0 into a serial column will auto increment the serial value, 
> MySQL also works this way.
> With PostgreSQL I will need to do a lot of code modification to my Aubit4GL 
> programs, since I will
> need to either insert with the key word default or omit the serial column in 
> the insert statement.  A
> typical insert with Aubit4GL looks like this:
> 
> create table table_name (link serial, col2 integer, col3 integer ....)
> define var_rec record like table_name.*
> let table_name.link = 0
> insert into table_name values(var_rec.*)
> 
> 
> As you can see, with Informix the serial column is set to 0 before the 
> insert, with PostgreSQL I will
> need to list all the columns and will not be able to use the wildcard syntax, 
> which supplies all the
> column names to the insert.  Setting the serial column to null to auto 
> increment would also work for
> me.

If you don't want to modify your code, you could write a FOR EACH ROW BEFORE 
INSERT trigger
for the table that pulls the next value from the sequence if you insert 0.

I don't think that there is any chance that PostgreSQL's behaviour in this
case will be modified - first, the current behaviour is fine, and second,
such a change will break existing applications.

Yours,
Laurenz Albe

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