/// <summary>
/// Executes the query, and returns the first column of the first row in the result set returned by the query. Additional columns or rows are ignored.
/// Uses the default retry policy when executing the command.
/// </summary>
/// <param name="command">The command object that is required for the extension method declaration.</param>
/// <returns> The first column of the first row in the result set, or a null reference if the result set is empty. Returns a maximum of 2033 characters.</returns>
public static object ExecuteScalarWithRetry(this OracleCommand command)
{
return(command.ExecuteScalarWithRetry(RetryManager.Instance.GetDefaultOracleCommandRetryPolicy()));
}