我有3个查询:将3个查询连接到1个表时如何查询?
// (1)
String sql = "SELECT tblClientInfo.ClientID, tblrefmarket.MarketDesc, tblclientinfo.LastName, tblledger.LoanAmount, "
+ "tblledger.DateStarted, tblledger.DailyPay, tblledger.Expiry FROM tblclientinfo Inner Join tblbusinessinfo ON tblbusinessinfo.ClientID = tblclientinfo.ClientID "
+ "Inner Join tblrefmarket ON tblbusinessinfo.MarketID = tblrefmarket.MarketID "
+ "Inner Join tblledger ON tblledger.ClientID = tblclientinfo.ClientID where MarketDesc = ?";
// (2)
String sumSQL = "SELECT ClientID, sum(tblloanpayment.AmountPaid) as sum FROM tblloanpayment where tblloanpayment.ClientID= ? ";
// (3)
String balSQL = "SELECT (SELECT tblLedger.LoanAmount from tblLedger WHERE tblLedger.ClientID = ?) - (SELECT SUM(tblLoanPayment.AmountPaid) "
+ "FROM tblLoanPayment WHERE tblLoanPayment.ClientID = ?) as balance FROM dual; ";
我已执行这3个查询上显示一个JTable信息。它是成功的。
现在我的问题是当我使用JasperReports生成报告(或打印)。
我只能显示第一个查询,因为它在数据库中。虽然查询2和3不是。它们只是在查询1中进行的付款的计算。
如何加入此项目以便我能够显示所有必要的信息?
这里是我的代码:
private void cmdPrintActionPerformed(java.awt.event.ActionEvent evt) {
int row = tableMarket.getSelectedRow();
try {
JasperDesign jasperDesign = JRXmlLoader.load("notes receivables.jrxml");
String sql = "SELECT tblClientInfo.ClientID, tblrefmarket.MarketDesc, tblclientinfo.LastName, tblledger.LoanAmount, "
+ "tblledger.DateStarted, tblledger.DailyPay, tblledger.Expiry FROM tblclientinfo Inner Join tblbusinessinfo ON tblbusinessinfo.ClientID = tblclientinfo.ClientID "
+ "Inner Join tblrefmarket ON tblbusinessinfo.MarketID = tblrefmarket.MarketID "
+ "Inner Join tblledger ON tblledger.ClientID = tblclientinfo.ClientID where MarketDesc = '" + tableMarket.getModel().getValueAt(row, 0).toString() + "'";
JRDesignQuery newQuery = new JRDesignQuery();
newQuery.setText(sql);
jasperDesign.setQuery(newQuery);
JasperReport jasperReport = JasperCompileManager.compileReport(jasperDesign);
JasperPrint jasperPrint = JasperFillManager.fillReport(jasperReport, null, conn);
JasperViewer.viewReport(jasperPrint);
} catch (Exception e) {
e.printStackTrace();
JOptionPane.showMessageDialog(null, e);
}
}
此代码只显示第一个查询。
您的查询中有不同的数据结构。如何结合这些数据?你的问题目前还不清楚 – 2012-03-20 06:20:28