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POUnknown column name issue
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3976458
data
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ClosedDate
2016-07-26T21:12:30.117
CommentCount
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CommunityOwnedDate
CreationDate
2010-10-20T09:36:11.370
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LastActivityDate
2017-11-22T09:27:36.723
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2017-11-22T09:27:36.723
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PostTypeId
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Score
1
ViewCount
12913
LastEditorDisplayName
text
Body
I'm creating a JasperReports's report using some database connection using iReport. I have added a new field to the report. That field does not exist in the database column. I have put that column in the report and assigning the value to this field using the expression. It compiles fine but when I fill the report using the database, it gives me the error: <pre><code>Error filling print... Unknown column name : test net.sf.jasperreports.engine.JRException: Unknown column name : test 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:1474) at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReport(JRVerticalFiller.java:125) at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:938) 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 net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:247) at com.jaspersoft.ireport.designer.compiler.IReportCompiler.run(IReportCompiler.java:858) at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:572) at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:997) Print not filled. Try to use an EmptyDataSource... </code></pre> How can I use the user defined fields in JasperReports?
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<jasper-reports>
Title
Unknown column name issue
singulars
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1. This table or related slice is empty.
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1. This table or related slice is empty.
PostTypePostTypeId
1. PTQuestion
UserLastEditorUserId
1. USAlex K
UserOwnerUserId
1. USOm Yadav
plurals
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PostLinksRelatedPostIdPostId
1. This table or related slice is empty.
PostsAcceptedAnswerId
1. This table or related slice is empty.
PostsParentIdCreationDate
1. PO
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2. PO
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Querying!

Guidance

A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.