Re: DatabaseMetaData.getTypeInfo() - returns all tables as well

This change breaks more than it fixes!

What is your specific problem with returning tables ?

Dave Cramer

davec(at)postgresintl(dot)com
www.postgresintl.com

On 1 October 2015 at 08:51, Thomas Kellerer <spam_eater(at)gmx(dot)net> wrote:

> Sorry, I am not registered with GitHub (nor using it)
>
> Regards
> Thomas
>
> Dave Cramer schrieb am 01.10.2015 um 13:23:
> > Hi Thomas,
> >
> > Any chance you could provide a github pull request ?
> >
> > Dave Cramer
> >
> > dave.cramer(at)credativ(dot)ca
> > http://www.credativ.ca
> >
> > On 30 September 2015 at 15:37, Thomas Kellerer <spam_eater(at)gmx(dot)net
> <mailto:spam_eater(at)gmx(dot)net>> wrote:
> >
> > Hello,
> >
> > DatabaseMetaData.getTypeInfo() returns not only data types, but also
> all table types.
> >
> > Strictly speaking this is correct as the row type for a table is
> indeed a "data type" in Postgres,
> > but I think the information returned is way too much from a
> practical point of view.
> >
> > This could be reduced at least a bit by not only excluding pg_toast,
> but also pg_catalog and information_schema types:
> >
> > SELECT t.typname,t.oid
> > FROM pg_catalog.pg_type t
> > JOIN pg_catalog.pg_namespace n ON (t.typnamespace = n.oid)
> > WHERE n.nspname not in ('pg_toast', 'pg_catalog',
> 'information_schema')
> >
> > (instead of WHERE n.nspname != 'pg_toast' in
> AbstractJdbc2DatabaseMetaData.java getTypeInfo())
> >
> >
> > What I find even more confusing (from a JDBC point of view) is that
> each table type is reported twice:
> >
> > Once with the table's name and once with an underscore prefixing the
> table name, e.g. foo and _foo.
> >
> > These entries map to pg_type rows with typtype = 'c' and 'b'
> respectively.
> >
> > I wonder if it would make sense to filter out the "real" tables from
> this result.
> > And if it does, if there is an efficient way of doing that and not
> removing real composite types
> > from the result at the same time.
> >
> >
> > Regards
> > Thomas
> >
> >
> >
> >
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>
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