"SELECT tbl1.staff_ic, tbl1.staff_name, tbl2.dec_status,tbl4.location,
					tbl3.post,tbl3.grade			
					FROM staff_detail tbl1
					INNER JOIN staff_declare tbl2
					ON tbl1.staff_ic = tbl2.staff_ic
					INNER JOIN staff_post tbl3
					ON tbl1.staff_post = tbl3.num
					INNER JOIN staff_department tbl4
					ON tbl1.staff_dep = tbl4.no
					";