How can I use pageContext.setAttribute

[mobzam]

Hello people,
I am developing web using JSPs. How can I use pageContext.setAttribute("serviceResult", serviceResult); I have an sql that is pulling data from a database table. But I was told I can use setAttribute to display details from the database. In other words how can I link the sql below and pageContext.setAttribute("serviceResult", serviceResult)

SQL below

<sql:query var="books" dataSource="${datasource}">
SELECT id, title, price FROM book
</sql:query>