SQL - "Colonna non può essere nullo"

Question

Ho una query SQL:

String S = Editor1.Content.ToString(); 
    Response.Write(S);  
    string sql = "insert into testcase.ishan(nmae,orders) VALUES ('9',@S)"; 
    OdbcCommand cmd = new OdbcCommand(sql, myConn); 
      cmd.Parameters.AddWithValue("@S", S); 
      cmd.ExecuteNonQuery(); 

Error: Column 'orders' cannot be null at System.Data.Odbc.OdbcConnection.HandleError

Answer 1

Dal manual:

When CommandType is set to Text, the .NET Framework Data Provider for ODBC does not support passing named parameters to an SQL statement or to a stored procedure called by an OdbcCommand. In either of these cases, use the question mark (?) placeholder. For example:

SELECT * FROM Customers WHERE CustomerID = ? 

The order in which OdbcParameter objects are added to the OdbcParameterCollection must directly correspond to the position of the question mark placeholder for the parameter in the command text.

Utilizzare questa:

string sql = "insert into testcase.ishan(nmae,orders) VALUES ('9', ?)"; 
OdbcCommand cmd = new OdbcCommand(sql, myConn); 
cmd.Parameters.AddWithValue("you_can_write_anything_here_its_ignored_anyway", S); 
cmd.ExecuteNonQuery(); 

Answer 2

ti sarà utile

cmd.Parameters.Add("@S", OdbcType.Char, S);