sql

Error: Table 2000000009 has no name

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If you get following error:

then the database is corrupted. In detail it means sql view “Session” is missing in the database! This can be a result of a crashed backup/restore process or a failed conversion process.

It can be, that View “Database File” is also missing. Although it is possible to restore the missing view e.g. from a (not changed) default cronus database, it won’t help, but you can give it a try. You can restore a new cronus database from the nav 2009 setup, subfolder SQLDemoDatabase\CommonAppData\Microsoft\Microsoft Dynamics NAV\60\Database.

In most cases it’s needed to restore the database from an earlier backup. If you do not have a backup strategy for your databases – but you should have – then export all changed nav objects as text files from the current, crashed database and start with a new database on base of a cronus database. then import/migrate the changed nav objects. after that re-compile all nav objects and restart the nav service.

Helpful Links:
http://saurav-nav.blogspot.co.at/2012/02/metadata-for-object-of-type-table-with.html

cheers

Sql Statements in C/AL – Part 2 : Create View

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The following code can be used to create a sql view in a given, external database.

// local variablesADOConnection  Automation 'Microsoft ActiveX Data Objects 2.8 Library'.ConnectionADOCommand  Automation 'Microsoft ActiveX Data Objects 2.8 Library'.CommandADORecSet  Automation 'Microsoft ActiveX Data Objects 2.8 Library'.RecordsetconnString  Text 1024activeConnection  VariantviewName  Text 100// the code// replace the server ip and the ext. databasename with your valuesconnString := 'Driver={SQL Server};Server=127.0.0.1;Database=Cronus600';CREATE(ADOConnection);ADOConnection.ConnectionString(connString);ADOConnection.Open;// convert ADO Connection to VariantactiveConnection := ADOConnection;viewName := 'CRONUS$Item View';CREATE(ADOCommand);ADOCommand.ActiveConnection := activeConnection;ADOCommand.CommandType := 1;ADOCommand.CommandText :=  'SELECT * FROM INFORMATION_SCHEMA.TABLES where ' +  '(TABLE_TYPE = ''VIEW'') and (TABLE_NAME =''' + viewName + ''')';ADORecSet := ADOCommand.Execute;IF ADORecSet.EOF = TRUE THEN BEGIN  ADOCommand.CommandText := 'CREATE VIEW [' + viewName + ']' +'AS SELECT No_, Description FROM dbo.[CRONUS$Item]' +'WHERE No_ like ''100%''';  ADOCommand.Execute;  message('view created');END ELSE  MESSAGE('view already exists');ADORecSet.Close;ADOConnection.Close;CLEARALL;

follow also posting “Sql Statements in C/AL – Part 1 : Select”.

cheers

Sql Statements in C/AL – Part 1 : Select

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There is no possibility to read data from an external database with standard c/al. Best way to do that till NAV version 2009 is using ADO. With Nav vs. 2013 upwards you can use .Net classes.
The following code can be used to read data from a given, external database.

// local variablesADOConnection  Automation'Microsoft ActiveX Data Objects 2.8 Library'.ConnectionADOCommand  Automation'Microsoft ActiveX Data Objects 2.8 Library'.CommandADOParameter  Automation'Microsoft ActiveX Data Objects 2.8 Library'.ParameterADORecSet  Automation'Microsoft ActiveX Data Objects 2.8 Library'.RecordsetadoField  Automation'Microsoft ActiveX Data Objects 2.8 Library'.FieldconnString  Text1024activeConnection  VariantsalesLineStr  Text1024idx  IntegeradoValue  VariantadoType  Integer// the code// replace the server ip and the ext. databasename with your valuesReadFromExternalDatabase()connString := 'Driver={SQL Server};Server=127.0.0.1;Database=Cronus600';CREATE(ADOConnection);ADOConnection.ConnectionString(connString);ADOConnection.Open;// convert ADO Connection to VariantactiveConnection := ADOConnection;CREATE(ADOCommand);ADOCommand.ActiveConnection := activeConnection;ADOCommand.CommandType := 1; // type is sql statement// sample statement: read first record from table sales lineADOCommand.CommandText := 'select top 1 * from [CRONUS AG$Sales Line]';ADOCommand.CommandTimeout := 100;CREATE(ADORecSet);ADORecSet := ADOCommand.Execute;ADORecSet.MoveFirst;  // goto first recordFOR idx := 1 TO ADORecSet.Fields.Count - 1 DO BEGIN  adoField := ADORecSet.Fields.Item(idx);  adoType := adoField.Type;  IF adoType  131 THEN  // ado type numeric must be convertedadoValue := adoField.Value  ELSEadoValue := GetFieldValue(adoField);  IF (adoField.Type  13) THEN  // ado type 13 = Unknown// gets the value with index idx of the resulting recordsalesLineStr := salesLineStr + FORMAT(adoValue);  salesLineStr := salesLineStr + ';';END;MESSAGE(salesLineStr);ADORecSet.Close;ADOConnection.Close;CLEARALL;GetFieldValue(adoField : 'Microsoft ActiveX Data Objects 2.8 Library'.Field) : Text// local variables// ADOStream  Automation'Microsoft ActiveX Data Objects 2.8 Library'.Stream// RetVal  TextCREATE(ADOStream);ADOStream.Open;ADOStream.WriteText(adoField.Value);ADOStream.Position:= 0;RetVal:= ADOStream.ReadText;ADOStream.Close;exit(RetVal);

helpful links:
http://www.w3schools.com/asp/ado_ref_connection.asp
http://www.w3schools.com/asp/ado_ref_command.asp
http://www.w3schools.com/asp/prop_comm_commandtype.asp#commandtypeenum