Thank all of you very much. It works now.
----- Original Message ----- 
From: "Stephan Szabo" <[EMAIL PROTECTED]>
To: "lonh SENG" <[EMAIL PROTECTED]>
Cc: <[EMAIL PROTECTED]>
Sent: Wednesday, January 30, 2002 9:14 AM
Subject: Re: [ADMIN] SQL Script


> 
> On Wed, 30 Jan 2002, lonh SENG wrote:
> 
> > Hi all,
> >
> >     I have one table containing data as "source.txt" attached file. I
> > want to create a script to clean the data and get the result as
> > "result.txt" attached file.
> >     inbtime and inbtime1 is datetime data type.
> >     Anyone has an idea?
> >     Any help will be appreciated.
> >     thanks in advance
> >
> >     Sorry. It seems to be out of the topic.
> 
> Probably belongs on pgsql-sql, but... :)
> 
> This is not at all optimized, but maybe something of the form:
> 
> select t1.card, t1.inbtime, coalesce((select min(inbtime) from t t2 where
> t2.inbtime>t1.inbtime and t2.card=t1.card), t1.inbtime) from t t1;
> 
> 
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