string sql='
select a.e_no,a.e_name,a.e_dept,b.b_deptname from a,b where a.e_dept =b.b_dept ';
user the sql above to fill a dataset,if i wanna to insert a row on datagridveiw,or chage some data on datagridview ,how can i use to update tabele a,
sda.update(ds)?