I don't know if this might be what you want but how about if you try this:
ResultSet rs = ps.executeQuery();
boolean b = false;
while (ps.next()) {
boolean b = true;
}
if (boolean b == false) {
out.println("the resultset is empty");
}
Hope it is what you wanted.
jake
-----Original Message-----
From: A mailing list about Java Server Pages specification and reference
[mailto:[EMAIL PROTECTED]]On Behalf Of sunil_s23
Sent: Monday, June 18, 2001 1:08 PM
To: [EMAIL PROTECTED]
Subject: Re: Checking for Empty Result Set
That calls for two sql statements; is there a more
economical way out ?.
The following code seems to work, but not always.
Any pointers ?
ResultSet rs = ps.executeQuery();
if(rs.isBeforeFirst() == false)
{
System.out.println("empty result set");
}
else
{
while(rs.next())
{
System.out.println(rs.getString("EMPLOYEE_NAME"));
}
}
--- King Maurice <[EMAIL PROTECTED]> wrote:
> Well the get the count of the resultset in your sql
> command and then test
> for a condition of one
>
> You need to figure out on your own, the conditions
> in your code, if not your
> lost!!!!
>
> Maurice~
>
> ----- Original Message -----
> From: "sunil_s23" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Monday, June 18, 2001 11:58 AM
> Subject: Re: Checking for Empty Result Set
>
>
> > This definitely caters to the case when there is
> only
> > one row in the result set; but what about the case
> if
> > the result set contains more than one row. I am
> > looking for a solution which will handle both
> single
> > row results and multiple row results as well as
> the
> > case when the result set is empty.
> > Any suggestions ?,
> > Thanks,
> > Sunil.
> >
> > --- King Maurice <[EMAIL PROTECTED]> wrote:
> > > I see your problem
> > >
> > > Do this example or follow this example if you
> can
> > > comprehend.
> > >
> > > Example below::
> > >
> > > if (! rs.next())
> > > {
> > > %>
> > > <table><tr><td>empty result
> set</td></tr></table>
> > > <%
> > > }
> > > else
> > > {
> > > String employee =
> rs.getString("EMPLOYEE_NAME"));
> > > %>
> > > <table><tr><td><%= employee
> %></td></tr></table>
> > > <%
> > > }
> > >
> > >
> > >
> > >
> > > ----- Original Message -----
> > > From: "sunil_s23" <[EMAIL PROTECTED]>
> > > To: <[EMAIL PROTECTED]>
> > > Sent: Monday, June 18, 2001 11:44 AM
> > > Subject: Re: Checking for Empty Result Set
> > >
> > >
> > > > See the code below, it does not work if there
> is a
> > > > single row in the result set; in other words
> the
> > > > statement if(!rs.next()) causes a row of
> result
> > > set to
> > > > be skipped.
> > > > Any suggestions ?,
> > > > Sunil.
> > > >
> > > > ResultSet rs = ps.executeQuery();
> > > > if(!rs.next())
> > > > System.out.println("empty result
> > > set");
> > > > while(rs.next())
> > > > {
> > > > System.out.println(rs.getString
> > > > ("EMPLOYEE_NAME"));
> > > > }
> > > >
> > > > --- Satyanarayan Divakar
> > > > <[EMAIL PROTECTED]> wrote:
> > > > > if(!resultSet.next())
> > > > > display"No Records Retreived";
> > > > >
> > > > > -----Original Message-----
> > > > > From: sunil_s23 [mailto:[EMAIL PROTECTED]]
> > > > > Sent: Monday, June 18, 2001 10:27 AM
> > > > > To: [EMAIL PROTECTED]
> > > > > Subject: Re: Checking for Empty Result Set
> > > > >
> > > > >
> > > > > Hi All,
> > > > > A ResultSet is never null once we execute a
> > > > > PreparedStatement and assign the result to
> the
> > > > > Result
> > > > > Set.
> > > > > Is there any other way of checking whether a
> > > > > ResultSet
> > > > > is empty ?
> > > > > Thanks,
> > > > > Sunil.
> > > > > --- King Maurice <[EMAIL PROTECTED]>
> > > wrote:
> > > > > > IF RESULTSET IS EQUAL TO NULL
> > > > > > DO SOMETHING,
> > > > > > SUGGESTION:: NO RECORDS FOUND PLEASE TRY
> AGAIN
> > > > > >
> > > > > >
> > > > > > ----- Original Message -----
> > > > > > From: "sunil_s23" <[EMAIL PROTECTED]>
> > > > > > To: <[EMAIL PROTECTED]>
> > > > > > Sent: Monday, June 18, 2001 11:00 AM
> > > > > > Subject: Checking for Empty Result Set
> > > > > >
> > > > > >
> > > > > > > Hello,
> > > > > > > Which is the best method for checking
> > > whether a
> > > > > > Result
> > > > > > > Set is empty ?
> > > > > > >
> > > > > > > ResultSet rs = prestmt.exeucteUpdate();
> > > > > > > Checking for rs.isBeforeFirst()
> returning
> > > false
> > > > > > does
> > > > > > > not seem to work always....
> > > > > > > Thanks in advance,
> > > > > > > Sunil.
> > > > > > >
> > > > > > >
> > > > > > >
> > > > >
> > >
> __________________________________________________
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> > >
> >
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Some relevant FAQs on JSP/Servlets can be found at:
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