主/报表查询不适用于pentaho CE（PRD 8.1）中的参数

Question

我正在使用PRD CE 8.1

我在报表中添加了下拉参数（Exam_Id）。

静态查询可以正常工作-select * from Table where ExamId = 1

但是动态功能不起作用-select * from Table where ExamId = ${Exam_Id}提示我以下错误

org.pentaho.reporting.engine.classic.core.ReportDataFactoryException: Failed at query: SELECT *
from Fact f 
join Dimension ee on f.ExamEventId = ee.ExamEventId 
where f.ExamId = ${Exam_Id}
    at org.pentaho.reporting.engine.classic.core.modules.misc.datafactory.sql.SimpleSQLReportDataFactory.queryData(SimpleSQLReportDataFactory.java:184)
    at org.pentaho.reporting.engine.classic.core.modules.misc.datafactory.sql.SQLReportDataFactory.queryData(SQLReportDataFactory.java:142)
    at org.pentaho.reporting.engine.classic.core.CompoundDataFactory.queryStaticInternal(CompoundDataFactory.java:172)
    at org.pentaho.reporting.engine.classic.core.CompoundDataFactory.queryStatic(CompoundDataFactory.java:154)
    at org.pentaho.reporting.engine.classic.core.cache.CachingDataFactory.queryInternal(CachingDataFactory.java:408)
    at org.pentaho.reporting.engine.classic.core.cache.CachingDataFactory.queryStatic(CachingDataFactory.java:151)
    at org.pentaho.reporting.engine.classic.core.CompoundDataFactory.queryStaticInternal(CompoundDataFactory.java:168)
    at org.pentaho.reporting.engine.classic.core.CompoundDataFactory.queryStatic(CompoundDataFactory.java:154)
    at org.pentaho.reporting.engine.classic.core.CompoundDataFactory.queryData(CompoundDataFactory.java:67)
    at org.pentaho.reporting.engine.classic.core.states.datarow.DefaultFlowController.performQueryData(DefaultFlowController.java:256)
    at org.pentaho.reporting.engine.classic.core.states.datarow.DefaultFlowController.performQuery(DefaultFlowController.java:192)
    at org.pentaho.reporting.engine.classic.core.states.process.ProcessState.initializeForMasterReport(ProcessState.java:318)
    at org.pentaho.reporting.engine.classic.core.layout.output.AbstractReportProcessor.prepareReportProcessing(AbstractReportProcessor.java:442)
    at org.pentaho.reporting.engine.classic.core.modules.output.pageable.graphics.PrintReportProcessor.getNumberOfPages(PrintReportProcessor.java:69)
    at org.pentaho.reporting.engine.classic.core.modules.gui.base.PreviewPane$RepaginationRunnable.run(PreviewPane.java:238)
    at org.pentaho.reporting.engine.classic.core.util.Worker.run(Worker.java:153)
Caused by: java.sql.SQLException: Parameter metadata not available for the given statement
    at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:129)
    at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97)
    at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89)
    at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63)
    at com.mysql.cj.jdbc.MysqlParameterMetadata.checkAvailable(MysqlParameterMetadata.java:86)
    at com.mysql.cj.jdbc.MysqlParameterMetadata.getParameterClassName(MysqlParameterMetadata.java:164)
    at org.pentaho.reporting.engine.classic.core.modules.misc.datafactory.sql.SimpleSQLReportDataFactory.parametrize(SimpleSQLReportDataFactory.java:356)
    at org.pentaho.reporting.engine.classic.core.modules.misc.datafactory.sql.SimpleSQLReportDataFactory.parametrizeAndQuery(SimpleSQLReportDataFactory.java:277)
    at org.pentaho.reporting.engine.classic.core.modules.misc.datafactory.sql.SimpleSQLReportDataFactory.queryData(SimpleSQLReportDataFactory.java:179)
    ... 15 more

请提出解决上述问题的建议？