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JDBC Interview Questions and Answers

Question - How Can Resultset Records Be Restricted To Certain Rows?

Answer -

The easy answer is "Use a JDBC 2.0 compliant driver". With a 2.0 driver, you can use the setFetchSize() method within a Statement or a ResultSet object.
For example,

Statement stmt = con.createStatement();
ResultSet rs = stmt.executeQuery("select * from customers");
will change the default fetch size to 400.
You can also control the direction in which the rows are processed. For instance:
will process the rows from bottom up.
The driver manager usually defaults to the most efficient fetch size...so you may try experimenting with different value for optimal performance.


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