Help with libdbi code

Geert Janssens geert.gnucash at
Sat May 7 09:27:28 EDT 2016

On Saturday 07 May 2016 14:00:41 Colin Law wrote:
> On 7 May 2016 at 12:23, Colin Law <clanlaw at> wrote:
> > On 7 May 2016 at 12:01, John Ralls <jralls at> wrote:
> >> Hmm, the trace files from the bug report seemed to show that the
> >> error was from saving a slot row with a 0-valued date rather than
> >> from creating a table with a default value of 0.> 
> > No doubt you are right (again), it is probably not the actual
> > creation but the writing that is the issue.  Me jumping to
> > conclusions again. I will investigate whether it is necessary to
> > change the options for creating the db.
> Actually, looking at the trace file again, it appears we were both
> correct.  The first error in the file is
>  CRIT <gnc.backend.dbi> [mysql_error_fn()] DBI error: 1067: Invalid
> default value for 'date'
> where it is complaining about the default value being 0, and later
> there are errors complaining about writing into the slots table with a
> NULL value for a date.
Actually, I read the trace file from the bug report as follows:

1. the first two errors are a complaint about the invalid default value of 0.

2. The next error message suggests that due to these errors with default values the 
transactions table is not created (BAD!)

3. Similar sets of errors follow for the splits table and the slots table, meaning these tables are 
not create as well

4. Then come the INSERT errors. GnuCash fails to insert values into the slots table, which at 
that point makes sense because those tables weren't created.

I don't think this last error complains about an attempt to insert NULL as a value, rather it 
complains that whole table doesn't exist.

So I do believe it fails while creating the tables as you originally assumed. Later errors are just a 
consequence of that.



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