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  1. PO
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    <p>I think anchor tag has problem. You are passing <code>[empId to remove]</code> instead of valid <code>empId</code></p> <p>Change</p> <pre><code>&lt;a href="?empId=[empId to remove]"&gt;Delete&lt;/a&gt; ↑ </code></pre> <p>To,</p> <pre><code>&lt;a href="?empId=${row.empId}"&gt;Delete&lt;/a&gt; </code></pre> <p><strong>From stacktrace</strong> </p> <pre><code>[Microsoft][ODBC Microsoft Access Driver]Invalid SQL data type </code></pre> <p><code>[empId to remove]</code> is invalid SQL data type. </p> <p><strong>Edit</strong> </p> <p>Things to look </p> <ol> <li>You are submitting a form but there is no <code>submit button</code></li> <li>Anchor tag <code>&lt;a href="?empId=[empId to remove]"&gt;Delete&lt;/a&gt;</code> which is the action it will call?</li> <li>You are printing form in loop</li> </ol> <p>Create two <code>JSP</code> files, one to display all records with delete link <code>view_all.jsp</code> and second <code>reserve.jsp</code> as you mentioned in <code>form</code> tag. </p> <p><strong>view_all.jsp</strong> </p> <pre><code>&lt;sql:setDataSource var = "bookdB" scope = "session" driver = "sun.jdbc.odbc.JdbcOdbcDriver" url = "jdbc:odbc:bookdB" /&gt; &lt;sql:query dataSource="${bookdB}" var="result"&gt; SELECT * from Employees; &lt;/sql:query&gt; &lt;table border="1" width="100%"&gt; &lt;tr&gt; &lt;th&gt;&lt;/th&gt; &lt;th&gt;Emp ID&lt;/th&gt; &lt;th&gt;First Name&lt;/th&gt; &lt;th&gt;Last Name&lt;/th&gt; &lt;th&gt;Age&lt;/th&gt; &lt;/tr&gt; &lt;c:forEach var="row" items="${result.rows}"&gt; &lt;tr&gt; &lt;td&gt;&lt;a href="reserve.jsp?empId=${row.empId}"&gt;Delete&lt;/a&gt;&lt;/td&gt; &lt;td&gt;&lt;c:out value="${row.empId}"/&gt;&lt;/td&gt; &lt;td&gt;&lt;c:out value="${row.first}"/&gt;&lt;/td&gt; &lt;td&gt;&lt;c:out value="${row.last}"/&gt;&lt;/td&gt; &lt;td&gt;&lt;c:out value="${row.age}"/&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/form&gt; &lt;/c:forEach&gt; &lt;/table&gt; </code></pre> <p><strong>reserve.jsp</strong> </p> <pre><code>&lt;sql:setDataSource var = "bookdB" scope = "session" driver = "sun.jdbc.odbc.JdbcOdbcDriver" url = "jdbc:odbc:bookdB" /&gt; //get the empId send from view_all.jsp &lt;c:set var="empId" value="${requestScope.empId}"/&gt; &lt;sql:update dataSource="${bookdB}" var="count"&gt; DELETE FROM Employees WHERE empId = ? &lt;sql:param value="${empId}" /&gt; &lt;/sql:update&gt; </code></pre>
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    1. POInvalid SQL data type error when deleting row from database?
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    1. USAniket Kulkarni
    1. USAniket Kulkarni
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    1. POInvalid SQL data type error when deleting row from database?
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    1. COGetting the same error. Thanks for trying though. I think there's a problem with the line |<c:set var="empId" value="${param['empId']}"/>|.
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      1. USConor Caslin
    2. CO@ConorCaslin : can you just print `empId`? `<c:set var="empId" value="${param['empId']}"/>` after this line type `<c:out value="${empId}"/>` have you referred [this tutorial](http://www.tutorialspoint.com/jsp/jstl_sql_param_tag.htm)
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      1. USAniket Kulkarni
    3. COI'm still getting the invalid SQl data type error if I leave in the line `<c:set var="empId" value="${param['empId']}"/>`. i can print the row number, without this line though, because the JSP file will complile then
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      1. USConor Caslin
 

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