Hi All, I am facing since 3 days one silly issue with Jasper Report. I have created 2 months back one jasper report and being used succesfully in the application. The query gets executed in ireports as well as in Java code. =========Existing query, Begin SELECT QA_SHIPS_EVALUATION."SHIPS_MGMT_COMMENTS" AS QA_SHIPS_EVALUATION_SHIPS_MGMT_COMMENTS, (select QA_CLIENTS.CLIENT_FIRSTNAME from QA_CLIENTS where QA_CLIENTS.CLIENT_ID_PK=CLIENT_ID_FK) as FirstName, (select QA_CLIENTS.CLIENT_LASTNAME from QA_CLIENTS where QA_CLIENTS.CLIENT_ID_PK=CLIENT_ID_FK) as LastName,MONTH_ENTERED FROM QA_SHIPS_EVALUATION where SHIPLODGE_ID_FK=$P{shipLodge_id} and MONTH_ENTERED=$P{month} ================End Now I have a requirement which is a simple modification to get Ship name as well. =====================My new query Begin SELECT QA_SHIPS_EVALUATION."SHIPS_MGMT_COMMENTS" AS QA_SHIPS_EVALUATION_SHIPS_MGMT_COMMENTS, (select QA_CLIENTS.CLIENT_FIRSTNAME from QA_CLIENTS where QA_CLIENTS.CLIENT_ID_PK=CLIENT_ID_FK) as FirstName, (select QA_CLIENTS.CLIENT_LASTNAME from QA_CLIENTS where QA_CLIENTS.CLIENT_ID_PK=CLIENT_ID_FK) as LastName,MONTH_ENTERED, (select QA_SHIP_LODGE_DETAILS.NAME from QA_SHIP_LODGE_DETAILS where QA_SHIP_LODGE_DETAILS.SHIP_LODGE_ID_PK=SHIPLODGE_ID_FK) as EupName FROM QA_SHIPS_EVALUATION where SHIPLODGE_ID_FK=$P{shipLodge_id} and MONTH_ENTERED=$P{month} ==============End The above query works in ireport upon preview and in sql server editor (my database is on sql server 2008). Once I use it in the my application the following error occurs. net.sf.jasperreports.engine.JRException: Unknown column name : EupName at net.sf.jasperreports.engine.JRResultSetDataSource.getColumnIndex(JRResultSetDataSource.java:355) at net.sf.jasperreports.engine.JRResultSetDataSource.getFieldValue(JRResultSetDataSource.java:112) at net.sf.jasperreports.engine.fill.JRFillDataset.setOldValues(JRFillDataset.java:823) at net.sf.jasperreports.engine.fill.JRFillDataset.next(JRFillDataset.java:787) at net.sf.jasperreports.engine.fill.JRBaseFiller.next(JRBaseFiller.java:1478) at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReport(JRVerticalFiller.java:125) at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:942) at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:841) at net.sf.jasperreports.engine.fill.JRFiller.fillReport(JRFiller.java:58) at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:417) at servlet.ReportServlet.generatePDFReport(ReportServlet.java:2208) at servlet.ReportServlet.doGet(ReportServlet.java:159) at javax.servlet.http.HttpServlet.service(HttpServlet.java:690)....................................................................................I am kind of lost here in understanding why the above error since 3 days. Any ideas where I am making blunder, please?I really really appreciate the help. I use Ireports 3.7.6. Thanks rccos