[odb-users] How to retrieve schema name ?

David Sarrut David.Sarrut at creatis.insa-lyon.fr
Thu Mar 19 06:20:12 EDT 2015


yes Per, sure ! Sorry I was not enough precise: I need to do this query
within odb, in C++.

I usually use things such as :
typedef odb::query<person> query;
typedef odb::result<person> result;
etc ...

but I need to know the type of this schema_version table to do that. Or
maybe with native SQL query ? but in this case, it is not clear for me how
to get the result.

thanks,
David


On Thu, Mar 19, 2015 at 11:09 AM, Per Edin <info at peredin.com> wrote:

> Hi David!
>
> Maybe I have misunderstood your problem, but wouldn't a simple
>
> SELECT name FROM schema_version GROUP BY name
>
> work? To get all unique schema names in any database.
>
> /Per
>
> On Thu, Mar 19, 2015 at 10:55 AM, David Sarrut
> <David.Sarrut at creatis.insa-lyon.fr> wrote:
> > Hello,
> >
> > when create a db with a schema name, there is an additional table
> > "schema_version" that is created. When reading a database, say from a
> file
> > with sqlite, is there a way to access this table content and retrieve the
> > value for the name ?
> >
> > thanks,
> > David
> >
> > --
> > David Sarrut, Phd
> > Directeur de recherche CNRS
> > CREATIS, UMR CNRS 5220, Inserm U 1044
> > Centre de lutte contre le cancer Léon Bérard
> > 28 rue Laënnec, 69373 Lyon cedex 08
> > Tel : 04 78 78 51 51 / 06 74 72 05 42
> > http://www.creatis.insa-lyon.fr/~dsarrut
> > _________________________________
> >  "2 + 2 = 5,  for extremely large values of 2"
> > _________________________________
>



-- 
David Sarrut, Phd
Directeur de recherche CNRS
CREATIS, UMR CNRS 5220, Inserm U 1044
Centre de lutte contre le cancer Léon Bérard
28 rue Laënnec, 69373 Lyon cedex 08
Tel : 04 78 78 51 51 / 06 74 72 05 42
http://www.creatis.insa-lyon.fr/~dsarrut
_________________________________
 "2 + 2 = 5,  for extremely large values of 2"
_________________________________


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