SELECT Time_class, Time_instance, Geo_class, Aggregated_area, Super_classed_disease_cat, Cause, Constraint_ref, Sex, Sex_code, Age_start, Age_end, Age_range, Sum_count = SUM(G.Converted_person_count)
			INTO #tmp_G_P_M_CC_S_S
			FROM Geo_postaggregated_mortality_count_with_cause_catagory_SPLIT_SMR G 
			GROUP BY G.Time_class, G.Time_instance, G.Geo_class, G.Aggregated_area, G.Super_classed_disease_cat, G.Cause, G.Constraint_ref, G.Sex, G.Sex_code, G.Age_start, G.Age_end, G.Age_range


		DECLARE @Key AS INT 
		SET @Key = 1



		while @Key <= (SELECT MAX(Key_m) FROM Geo_postaggregated_mortality_count_with_cause_catagory_SPLIT_SMR) begin 

			UPDATE Geo_postaggregated_pop_count_SPLIT 
   			SET Total_person_count = t.Sum_count
   			FROM Geo_postaggregated_mortality_count_with_cause_catagory_SPLIT_SMR G, #tmp_G_P_M_CC_S_S t
 			WHERE
 			G.Key_m = @Key,  ---  Problem is here
			G.Time_instance = t.Time_instance,
			G.Geo_class = t.Geo_class,
			G.Aggregated_area = t.Aggregated_area,
			G.Super_classed_disease_cat = t.Super_classed_disease_cat,
			G.Cause = t.Cause,
			G.Constraint_ref = t.Constraint_ref,
			G.Sex = t.Sex,
			G.Sex_code = t.Sex_code,
			G.Age_start = t.Age_start,
			G.Age_end = t.Age_end,
			G.Age_range = t.Age_range

			SET @Key = @Key +1
		end