Re: Porting from Mysql to Postgres

Quoting Dror Matalon <dror(at)matal(dot)com>:

>
> Hi,
>
> I'm in the midst of porting Dbjay, a java based frontend, from MySQL to
> Postgres. More info about dbjay can be found at http://www.dbjay.com.
>
> 1. When I insert a CHAR field and then fetch it, I find out that
> the server padded it with spaces to the size of the field. This
> happens in Postgres but not in MySQL. I'm using String.trim() on
> it on the Java side. Is there a better way to do this, like setting
> a flag to tell the server to trim?

CHAR's are meant to pad. VARCHAR's don't pad.

> 2. Looking at the JDBC code it looks like getTableName in a resultset
> returns "" rather than the table name. This is a big problem, cause
> without the tablename it's impossible to let the user update the
> resultset when the table name is unknown. Seeing that php doesn't
> offer it and looking at the backend code, it looks like it's both
> not Java specific and not easy to implement. Still, what are the
> chances of having this available?

Possibly by 7.1, but I've yet to find out how to do it. I was going to post a
question to the hackers list about this at the weekend. This is needed for the
implementation of UpdateableResultSet.

> 3. Once Dbjay is available what are the appropriate newsgroups and
> mailing lists to announce it to the Postgres community.

The announce list, and as it's jdbc the jdbc list.

Peter

--
Peter Mount peter(at)retep(dot)org(dot)uk
PostgreSQL JDBC Driver: http://www.retep.org.uk/postgres/
RetepPDF PDF library for Java: http://www.retep.org.uk/pdf/