PostgreSQL JDBC: bytea column getMetaData().getColumns().getIn("COLUMN_SIZE") ~ 2GB
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 <http://cdot.senecac.on.ca/>
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
*Grace Batumbya*
Research Assistant | Seneca CDOT
Phone: 416-491-5050 x3548
cdot.senecac.on.ca <http://cdot.senecac.on.ca/>
Show quoted text
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 <http://cdot.senecac.on.ca/>