Re: PostgreSQL JDBC: bytea column getMetaData().getColumns().getIn("COLUMN_SIZE") ~ 2GB

I did a bit of looking around in the jdbc driver and found this method in: org.postgresql.jdbc2.TypeInfoCache
public int getPrecision(int oid, int typmod) {
        oid = convertArrayToBaseOid(oid);
        switch (oid) {
            ...
            case Oid.TEXT:
            case Oid.BYTEA:
            default:
                return _unknownLength;
        }
    }

where _unknownLength is 2147483647


On 7/12/2011 9:03 AM, Grace Simon Batumbya wrote:

Hi there,
I am using postgresql-9.0-801.jdbc3, on postgresql 9.0.4.
On a bytea column, getMetaData().getColumns().getIn("COLUMN_SIZE") returns 2147483647 yet from asking around on #postgresql on irc, the bytea has a limit just less than 1GB.
Why then does jdbc return 2GB instead of 1GB?

--

Grace Batumbya
Research Assistant | Seneca CDOT
Phone: 416-491-5050 x3548
cdot.senecac.on.ca