Oracle 5.0 Reference Manual page 1949

"FROM country, city ORDER BY country.continent, country.name";
cmd.Connection = conn;
myAdapter.SelectCommand = cmd;
myAdapter.Fill(myData);
myReport.Load(@".\world_report.rpt");
myReport.SetDataSource(myData);
myViewer.ReportSource = myReport;
}
catch (MySql.Data.MySqlClient.MySqlException ex)
{
MessageBox.Show(ex.Message, "Report could not be created",
MessageBoxButtons.OK, MessageBoxIcon.Error);
}
A new data set it generated using the same query used to generate the previously saved data set.
Once the data set is filled, a ReportDocument is used to load the report file and bind it to the data set.
The ReportDocument is the passed as the ReportSource of the crViewer.
This same approach is taken when a report is created from a single table using Connector/ODBC. The
data set replaces the table used in the report and the report is displayed properly.
When a report is created from multiple tables using Connector/ODBC, a data set with multiple tables
must be created in our application. This enables each table in the report data source to be replaced
with a report in the data set.
We populate a data set with multiple tables by providing multiple
MySqlCommand object. These
Reports in the Database menu's Show SQL Query option. Assume the following query:
SELECT `country`.`Name`, `country`.`Continent`, `country`.`Population`, `city`.`Name`, `city`.`Populati
FROM `world`.`country` `country` LEFT OUTER JOIN `world`.`city` `city` ON `country`.`Code`=`city`.`Coun
ORDER BY `country`.`Continent`, `country`.`Name`, `city`.`Name`
This query is converted to two
Visual Basic Example
Imports CrystalDecisions.CrystalReports.Engine
Imports System.Data
Imports MySql.Data.MySqlClient
Dim myReport As New ReportDocument
Dim myData As New DataSet
Dim conn As New MySqlConnection
Dim cmd As New MySqlCommand
Dim myAdapter As New MySqlDataAdapter
conn.ConnectionString = "server=127.0.0.1;" _
& "uid=root;" _
& "pwd=12345;" _
& "database=world"
Try
conn.Open()
cmd.CommandText = "SELECT name, population, countrycode FROM city ORDER BY countrycode, name; " _
& "SELECT name, population, code, continent FROM country ORDER BY continent, name"
cmd.Connection = conn
myAdapter.SelectCommand = cmd
myAdapter.Fill(myData)
myReport.Load(".\world_report.rpt")
myReport.Database.Tables(0).SetDataSource(myData.Tables(0))
myReport.Database.Tables(1).SetDataSource(myData.Tables(1))
myViewer.ReportSource = myReport
Catch ex As Exception
MessageBox.Show(ex.Message, "Report could not be created", MessageBoxButtons.OK, MessageBoxIcon.Err
Connector/Net Programming
statements are based on the SQL query shown in Crystal
SELECT
queries and displayed with the following code:
SELECT
1929
statements in our
SELECT