NpgsqlCommand.ExecuteScalar Method 
      
      [This is preliminary documentation and subject to change.]
     
    
       Executes the query, and returns the first column of the first row in the result set returned by the query. Extra columns or rows are ignored. 
      
        [Visual Basic]
        NotOverridable Public Function ExecuteScalar() As 
Object Implements _
   IDbCommand.ExecuteScalar
 
      
        [C#]
        public 
object ExecuteScalar();
 
      Return Value
      The first column of the first row in the result set, or a null reference if the result set is empty.
      Implements
      
        IDbCommand.ExecuteScalar
      
      See Also
      
        NpgsqlCommand Class | Npgsql Namespace