Setting the sql statement

Question

http://www.egbolig.dk/drift_bo_syd.rpt (HERE IS THE REPORT)
We are using SAP Crystal Report .NET Runtime files (http://scn.sap.com/docs/DOC-7824 newest version 13.0.9.1312) in our web asp.net application. Everything have been working fine, but we have can into problems when showing the certain kinda reports.
In our code get the reports sql statement using getSQLStatement.
Dim gp As New GroupPath() Dim sql As String = report.ReportClientDocument.RowsetController.GetSQLStatement(gp)
This will get the sql, and we use this sql (getSqlStatement) and attach a sql WHERE clause from the code to only get a certain number of records.
The report Drift_bo_syd.rpt has 5 tables, and the following sql statement. 
Database/Show Sql Statement
SELECT "rekvstam"."Sel", "rekvstam"."Afd", "rekvstam"."Levadresse", "rekvstam"."Rekvisition", "rekvstam"."Lejemaal", "rekvstam"."Lejer", "rekvstam"."Udfoertaf", "rekvstam"."Udfoertdato", "rekvstam"."Krit", "Selskab"."Adresse", "Selskab"."Postby", "Selskab"."Tlf", "Selskab"."Fax", "rekvstam"."Kontor", "rekvstam"."Hjemme", "rekvstam"."Rekvdato", "rekvstam"."Aftale", "rekvstam"."InitialRet", "rekvstam"."Arbejde", "kreditor"."Att", "rekvstam"."Konto", "Selskab"."Navn", "Selskab"."Email", "Interessentadresse"."Navn", "Interessentadresse"."Adresse", "Interessentadresse"."Postby", "Interessentadresse"."Email1", "Interessentadresse"."Telefon_Fax", "Interessentadresse"."Type", "Interessentadresse"."Tlf1", "rekvstam"."tlfLejer", "kreditor"."Kred", "Interessentadresse"."Interessentnr" FROM  (("Rekvstam" "rekvstam" INNER JOIN "Selskab" "Selskab" ON "rekvstam"."Sel"="Selskab"."Sel") LEFT OUTER JOIN "Kreditor" "kreditor" ON "rekvstam"."Kred"="kreditor"."Kred") INNER JOIN "Interessentadresse" "Interessentadresse" ON "kreditor"."Interessentnr"="Interessentadresse"."Interessentnr" WHERE  "Interessentadresse"."Type"='K' 
But if we run the report from our asp.net code, we get the following error: 
Cannot determine the queries necessary to get data for this report. Failed to retrieve data from the database. Error in File Drift_Bo_Syd {97FED382-1BAC-4DB1-970F-9E098ECE28F1}.rpt: Failed to retrieve data from the database.
After a long time searching for a solution, we found out that if we place the column kred from the kreditor table on the report, the report will work. (field explorer / database fields / kreditor (table) / kred (column)
Very important is that the field "kreditor.kred" is a primary key of the table kreditor, and also used in the linking.!
(We can get the report to work if we call the sql statement with the "kreditor"."kred" in the SELECT statement.
SELECT "kreditor"."kred", "rekvstam"."Sel", "rekvstam"."Afd", "rekvstam"."Levadresse", "rekvstam"."Rekvisition", "rekvstam"."Lejemaal", "rekvstam"."Lejer", "rekvstam"."Udfoertaf", "rekvstam"."Udfoertdato", "rekvstam"."Krit", "Selskab"."Adresse", "Selskab"."Postby", "Selskab"."Tlf", "Selskab"."Fax", "rekvstam"."Kontor", "rekvstam"."Hjemme", "rekvstam"."Rekvdato", "rekvstam"."Aftale", "rekvstam"."InitialRet", "rekvstam"."Arbejde", "kreditor"."Att", "rekvstam"."Konto", "Selskab"."Navn", "Selskab"."Email", "Interessentadresse"."Navn", "Interessentadresse"."Adresse", "Interessentadresse"."Postby", "Interessentadresse"."Email1", "Interessentadresse"."Telefon_Fax", "Interessentadresse"."Type", "Interessentadresse"."Tlf1", "rekvstam"."tlfLejer", "kreditor"."Kred", "Interessentadresse"."Interessentnr" FROM  (("Rekvstam" "rekvstam" INNER JOIN "Selskab" "Selskab" ON "rekvstam"."Sel"="Selskab"."Sel") LEFT OUTER JOIN "Kreditor" "kreditor" ON "rekvstam"."Kred"="kreditor"."Kred") INNER JOIN "Interessentadresse" "Interessentadresse" ON "kreditor"."Interessentnr"="Interessentadresse"."Interessentnr" WHERE  "Interessentadresse"."Type"='K'
But it should not be necessary to include this field (which is the primary key and used in linking the report) in the sql statement,
BECAUSE it is not used in the report. So maybe this is a bug?
It has not been necessary in RDC Crystal Report or RAS Crystal Report in a classic asp envoriment.
Here is the code we use to set the reports SQL Statement)
Try
Dim conn As New SqlConnection(connString)
conn.Open()
Dim sd As New SqlDataAdapter(New SqlCommand(nySQL, conn))
Dim ds As New Data.DataSet()
Dim navn As String = report.Database.Tables.Item(0).Name
sd.Fill(ds, navn)
report.SetDataSource(ds)
conn.Close()
Catch ex As Exception
Throw
End Try

Answer 1

Hi Jan
I understand your problem completely but we have asked  R&D to be able to edit the SQL and they explained due to how the report Engine works it's simply not possible anymore. It would take a complete rewrite in all of our DB drivers and query dll's to be able to allow it. They did that in CR 9 when they rewrote the DB drivers and removed the SQL part of the code into separate dll's and that is when the ability was removed, it's been that way ever since.
One possibility is to get the SQL from the Report and then connect to your DB using a .NET and if the results from the SQL is less than 5K rows and not too many columns you could then set the Report data source to a Dataset.
As long as all of the field names are the same CR will run the report using this work flow.
For data larger than 5K rows, limit is due to memory resources, you could save the DS to an XML file and then set the reports data source to the XML file. We've seen 100meg XML's used so the amount of data should not be a problem, but of course there are limits to everything so test...
This should not affect performance much.
So the work flow would be:
Load the report
Get the SQL Statement
Paste it into a Dataset Query
Something like this should get you started:
//string connString = "Provider=SQLOLEDB;Data Source=MySQLServer;Database=xtreme;User ID=sa;Password=pw";
string connString = "Provider=SQLNCLI10;Server=MySQLServer;Database=xtreme;User ID=sa;Password=pw";
Detail"".""Quantity"" FROM   ""xtreme"".""dbo"".""Orders Detail"" ""Orders Detail""";
string sqlString = @"SELECT top 10*  FROM  ""xtreme"".""dbo"".""Financials"" ""Financials""";
System.Data.OleDb.OleDbConnection oleConn = new System.Data.OleDb.OleDbConnection(connString);
System.Data.OleDb.OleDbCommand cmd = oleConn.CreateCommand();
cmd.CommandText = sqlString;
System.Data.DataSet ds = new System.Data.DataSet();
OleDbDataAdapter oleAdapter = new OleDbDataAdapter(sqlString, oleConn);
//OleDbDataAdapter oleAdapter2 = new OleDbDataAdapter(sqlString2, oleConn);
DataTable dt1 = new DataTable("Financials");
//DataTable dt2 = new DataTable("Orders Detail");
oleAdapter.Fill(dt1);
//oleAdapter2.Fill(dt2);
ds.Tables.Add(dt1);
//ds.Tables.Add(dt2);
ds.WriteXml("c:\\reports\\sc2.xml", XmlWriteMode.WriteSchema);
// as long as the field names match exactly Cr has no problems setting report to a DS.
try
    rpt.SetDataSource(ds.Tables[0]); // incremtent [0] for more than 1 table.
    rpt.SetDataSource(ds);
catch (Exception ex)
    MessageBox.Show("ERROR: Schema Mismatch. Error reported by CR: " + ex.Message);
//Now check for subreport and set to same DS
foreach (CrystalDecisions.CrystalReports.Engine.Section section in rpt.ReportDefinition.Sections)
    foreach (CrystalDecisions.CrystalReports.Engine.ReportObject reportObject in section.ReportObjects)
        if (reportObject.Kind == ReportObjectKind.SubreportObject)
            CrystalDecisions.CrystalReports.Engine.SubreportObject subReport = (CrystalDecisions.CrystalReports.Engine.SubreportObject)reportObject;
            CrystalDecisions.CrystalReports.Engine.ReportDocument subDocument = subReport.OpenSubreport(subReport.SubreportName);
            subDocument.SetDataSource(ds);
And for XML it would use this part, not above I am saving the data and structure in the XML file so it should match what is in the report:
foreach (CrystalDecisions.CrystalReports.Engine.Table rptTable in rpt.Database.Tables)
    try
        rptTable.Location = btrDataFile.ToString(); // @"D:\Atest\" + rptTable.Location + ".xml";
    catch (Exception ex)
        MessageBox.Show("ERROR: " + ex.Message);
Only issue you may run into is sometimes XML does not have a direct field type and your original data source but you'll get an error if that happens which could be trapped and handled.
If you have a report that only uses 2 tables I do have code that will convert it to use a Command Object. That is the limit the engine is capable of, there is a lot of logic to be able to do this in CRD and the SDK so that is all we could get for now.
I hope that helps
Don