将 null 值插入 DB2 中的 integer 列

Question

I have tried it before in mysql DB and it is working fine but this time seems like the syntax is not applicable for DB2 and it giving me exception if the variable is empty:

Here is my sample snippet:

var num = "";
string insert_qry = "INSERT INTO myTable(myCol) VALUES (@num)";
DB2Command checkCommand = new DB2Command(insert_qry, myConnection);

checkCommand.Parameters.Add("@num ", num ?? null);
affectRowNum = checkCommand.ExecuteNonQuery();

If I assign value from the variable it works fine but it is empty it will return this exception error:

IBM.Data.DB2.Core.DB2Exception: 'External component has thrown an exception.'

Any suggestion/Comments TIA

Answer 1

Try DbNull.Value this worked for me.