Returns the first row of the query.
Returns the first row of the query. An exception will be thrown if the query returns no row or more than one row.
Returns Some(singleRow), None if there are none, throws an exception if the query returns more than one row.
Returns Some(singleRow), None if there are none, throws an exception if the query returns more than one row.
returns a 'pretty' statement, i.e.
returns a 'pretty' statement, i.e. values are printed instead of '?'