The Excel formula `I_SQL_SCALAR` execute the SQL statement, returning the single column, single row result. The formula is only available to selected sites since it allows free format SQL to be executed. For data retrieval use [[I_SQL_SELECT_SCALAR]]. Parameters: - `process`: Excel boolean indicating whether to actually execute the statement. - `sql`: the SQL statement to execute. Returns: the single column, single row result when made available. Otherwise always `Not authorized` or `#N/A` when not connected.