Thanks. I have tried your program. But it seems that it has trouble with EUC_CN. It returns unrecoginzed value of empty columns.
BTW: I've solved this problem. Every one using odbc on windows shuold read this mail: psqlODBC with Visual Studio 2005 and Connection Pooling for newbies<http://archives.postgresql.org/pgsql-odbc/2005-12/msg00274.php> On Nov 7, 2007 4:48 AM, Alvaro Herrera <[EMAIL PROTECTED]> wrote: > ????????? wrote: > > Hi all, > > > > Recently I found my C/S program becomes slow. So I analysed the tcp > > traffic between my program and the Postgresql database. I found there > > are occasionally tcp re-transmission and that's why my porgram slow > > down. > > > > But when I changed to npsql, the tcp traffic was cut off to only 1/4 > > and there are much fewer re-transmission. I am not sure it's the > > problem of odbc or it's because that I am using odbc correctly. > > FYI there's another Postgres ODBC driver that is said to have better > performance. > > https://projects.commandprompt.com/public/odbcng > > (Yes, my company maintains it) > > -- > Alvaro Herrera > http://www.CommandPrompt.com/ > PostgreSQL Replication, Consulting, Custom Development, 24x7 support > -- 古希腊有一种哲人，穿着很宽的袍子走来走去。他们会划优美的曲线，其中包含了自己全部的心胸。他们的朋友也是智者，只有智者们互相之间才能明白彼此的曲线彼此的心胸。
