Re: help with front/backend datatype converting

Dave,

I see you raised a lot of issues about this problem but I don't have any
suggestion as of now. I'll think about it.

On the side, the timezone for timestamp is always sending in this
format:

2006-11-10 14:36:19.213000 -0500

should it be

2006-11-10 14:36:19.213000 -05:00

with the colon between hour and min?

thanks again

Leon Do

________________________________

From: Dave Cramer [mailto:pg(at)fastcrypt(dot)com]
Sent: Friday, November 10, 2006 4:15 PM
To: Do, Leon (Leon)
Cc: pgsql-jdbc(at)postgresql(dot)org
Subject: Re: [JDBC] help with front/backend datatype converting

Hi Leon,

No, currently there is no way to do this. It is possible, but this is
probably the worst data type to try this with. Postgresql has two
timestamp types, 1 with timezone, 1 without, jdbc has no knowledge of
this. Do you have suggestions on how to resolve this ? Also consider the
actual timezone, what if the timezone of the server is different than
the timezone of the client. To add to the problem, it is possible for
the server to keep dates/timestamps as 64bit integers, or Floating point
values. The client has to send the data in exactly the right format.

Sorry to only outline the problems without constructive solutions.

Dave

On 10-Nov-06, at 3:58 PM, Do, Leon (Leon) wrote:

Hi,

It looks like PostgreSQL JDBC always converting a column value to text
before sending it to the Backend server. Is there a way to stop this
behavior?

I am using the following piece of code to set the timestamp value:

new

prepstmt.setBinaryStream(1,is,bdata.); java.sql.Timestamp
sqltime =

When the backend server receives the parse message, the oid type for
binary data is set but the oid type for timestamp is not set.

When the bind message arrives, the format type for binary data is binary
and the format type for timestamp is text and there is no way to know
what is the type of the value anymore. Can I configure to disable text
converting feature?

thanks

Leon Do

Lucent Technologies

Mobility Software Engineer