Passing values for a prepared statement encounters problem

Question

I have a query which runs fine when executed from sqlplus
SELECT SYSDATE + (INTERVAL '10' MINUTE) FROM dual;
The same query when run using a java statement also works well.
when I use a Prepared statement like
String sql = SELECT SYSDATE + (INTERVAL ? MINUTE) FROM dual;
PreparedStatement ps = this.getPreparedStatement(sql.toString());
ps.setString(1, "10");
and execute I get the following exception
ORA-00920: invalid relational operator
I tried another way which also gives me a similar exception
String timeout = "10";
SELECT SYSDATE + (INTERVAL" + timeout + "MINUTE) FROM dual;
Can anybody tell me why the problem happens. Is anything wrong in passing values dynamically for an 'interval' function in oracle?

Answer 1

asokan_srini wrote:
Yes friends
Thanks for the reply. It worked out this way as u said
sql.append("SELECT SYSDATE + (INTERVAL ");
sql.append("'" + Integer.parseInt(timeout) + "' MINUTE) FROM dual");
Mr.masijade said.
First of all, there is no reason to do this command, really, but okay.
     There may be scenarios like this to use the command
          select * from mytable where (systimestamp - lastUpdateTimestamp) > Interval '10' Minute
Is there any other better way to get all records updated before a certain timestamp?Use Timestamp to create a timestamp and PreparedStatement's setTimestamp(), maybe?