SQL Server CE update or insert query - sql

Question

In my Windows Forms application, I'm using a SQL Server Compact database. I have a function in which I want to update the columns 'id' and 'name' in table 'owner', unless the specified id does not exist, in which case I want new values inserted.
For example, my current table has 'id' 1 and 2. It MIGHT have 'id' 3. User enters data to insert/update id 3.
I want my query to do something like this:
UPDATE owner
SET name = #InputN
WHERE id = 3
IF ##ROWCOUNT = 0
INSERT INTO owner (id, name) VALUES 3, #InputN
How should I define my query in order to make this work in SQL Server Compact Edition?

Answer 1

You should do it in your form codes. This way you don't even need to check if there is an di with the value=3. It will check it by itself and update the row if it exists. If not you won't get any errors.
RSSql.UpdateNonQueryParametric("update owner set name=? where id=3", newname);
public static void UpdateNonQueryParametric(string query, params Object[] parameters)
{
SqlCeParameter[] param = new SqlCeParameter[parameters.Length];
for (int i = 0; i < parameters.Length; i++)
{
param[i] = new SqlCeParameter();
param[i].Value = parameters[i];
}
_cnt = new SqlCeConnection();
_cnt.ConnectionString = ConnectionString;
_cmd = new SqlCeCommand();
_cmd.Connection = _cnt;
_cmd.CommandType = System.Data.CommandType.Text;
_cmd.CommandText = query;
_cmd.Parameters.AddRange(param);
if (_cnt.State != System.Data.ConnectionState.Open)
_cnt.Open();
_cmd.ExecuteNonQuery();
_cmd.Dispose();
if (_cnt.State != System.Data.ConnectionState.Closed)
_cnt.Close();
_cnt.Dispose();
}