📄 querydirect.jsp
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<%@ taglib prefix="sql" uri="http://java.sun.com/jsp/jstl/sql" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<html>
<head>
<title>JSTL: SQL action examples</title>
</head>
<body bgcolor="#FFFFFF">
<h1>SQL Direct Query Execution</h1>
<p>This example demonstrates how the row and columns can be directly accessed using various direct mechanisms.<p>
<!-- NOTE: the sql:setDataSource tag is for prototyping and simple applications. You should really use a DataSource object instead --!>
<sql:setDataSource
var="example"
driver="${sessionScope.myDbDriver}"
url="${sessionScope.myDbUrl}"
user="${sessionScope.myDbUserName}"
password="${sessionScope.myDbPassword}"
/>
<sql:transaction dataSource="${example}">
<sql:update var="newTable">
create table mytable (
nameid int primary key,
name varchar(80)
)
</sql:update>
<sql:update var="updateCount">
INSERT INTO mytable VALUES (1,'Paul Oakenfold')
</sql:update>
<sql:update var="updateCount">
INSERT INTO mytable VALUES (2,'Timo Maas')
</sql:update>
<sql:update var="updateCount">
INSERT INTO mytable VALUES (3,'Paul van Dyk')
</sql:update>
<sql:query var="deejays">
SELECT * FROM mytable
</sql:query>
</sql:transaction>
<hr>
<h2>Using the Row index and Column name</h2>
Row[0].NAMEID: <c:out value="${deejays.rows[0].NAMEID}" />
<br>
Row[0].NAME: <c:out value="${deejays.rows[0].NAME}" />
<br>
Row[1].NAMEID: <c:out value="${deejays.rows[1].NAMEID}" />
<br>
Row[1].NAME: <c:out value="${deejays.rows[1].NAME}" />
<br>
Row[2].NAMEID: <c:out value="${deejays.rows[2].NAMEID}" />
<br>
Row[2].NAME: <c:out value="${deejays.rows[2].NAME}" />
<br>
<hr>
<h2>Using the Row and Column index</h2>
Row[0][0]: <c:out value="${deejays.rowsByIndex[0][0]}" />
<br>
Row[0][1]: <c:out value="${deejays.rowsByIndex[0][1]}" />
<br>
Row[1][0]: <c:out value="${deejays.rowsByIndex[1][0]}" />
<br>
Row[1][1]: <c:out value="${deejays.rowsByIndex[1][1]}" />
<br>
Row[2][0]: <c:out value="${deejays.rowsByIndex[2][0]}" />
<br>
Row[2][1]: <c:out value="${deejays.rowsByIndex[2][1]}" />
<br>
<sql:update var="newTable" dataSource="${example}">
drop table mytable
</sql:update>
</body>
</html>
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