How to update database

Question

First, i retrieve 'PartID' from Temp tbl,
then i need to retrieve 'WIP' from Trak_Wip tbl with that particular 'PartID',
then update "WIP' in Temp tbl
this is Temp tbl,
Temp tbl (PartID, Qty, WIP)
Below is my code,
{code}
<sql:query var="rs" dataSource="${connection}">
SELECT * FROM Temp
</sql:query>
<c:forEach var="row" items="${rs.rows}">
<c:set var="partId" value="${row.PartID}"/>
<sql:query var="rsWip" dataSource="${lperf}">
SELECT SUM(Trak_Wip.Curr_Oper_Qty) as sum
FROM Trak_Wip
WHERE (Trak_Wip.Wip_Bank='DDBV' or Trak_Wip.Wip_Bank='SDBV' or Trak_Wip.Wip_Bank='S200') andTrak_Wip.Target_Item=?
<sql:param value="${partId}"/>
</sql:query>
<c:forEach items="${rsWip.rows}" var="row">
<c:set var="Wip" value="${row.sum}"/>
<sql:update dataSource="${connection}" var="rsUpdateWip">
UPDATE Temp SET WIP=? WHERE PartID=?
<sql:param value="${Wip}" />
<sql:param value="${partId}" />
</sql:update>
</c:forEach>
</c:forEach>
{code}
{noformat}this is the error,
org.apache.jasper.JasperException: javax.servlet.jsp.JspException:
               UPDATE Temp SET WIP=? WHERE PartID=?
          : [Microsoft][ODBC Microsoft Access Driver]Invalid SQL data type
     org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:512)
     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:377)
     org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
     org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
{color:#ff0000}Can anyone solve my problem?
{color}
{noformat}

Answer 1

Start with not using the JSTL SQL taglibrary. Write a DAO class which does the database access tasks and then come back if you still stucks.