select cs_group_max(Close,Day/3) from Quote_get('IBM');
      cs_group_max       
-------------------------
 float4:{20.2,40.2,50.5}
(1 row)

select cs_group_min(Close,Day/3) from Quote_get('IBM');
      cs_group_min       
-------------------------
 float4:{10.5,30.2,50.5}
(1 row)

select cs_group_sum(Close,Day/3) from Quote_get('IBM');
                  cs_group_sum                   
-------------------------------------------------
 float8:{30.7000007629395,70.4000015258789,50.5}
(1 row)

select cs_group_avg(Close,Day/3) from Quote_get('IBM');
                  cs_group_avg                   
-------------------------------------------------
 float8:{15.3500003814697,35.2000007629395,50.5}
(1 row)

select cs_group_var(Close,Day/3) from Quote_get('IBM');
          cs_group_var          
--------------------------------
 float8:{23.5225037002565,25,0}
(1 row)

select cs_group_dev(Close,Day/3) from Quote_get('IBM');
         cs_group_dev          
-------------------------------
 float8:{4.85000038146973,5,0}
(1 row)

select cs_group_first(Close,Day/3) from Quote_get('IBM');
     cs_group_first      
-------------------------
 float4:{10.5,30.2,50.5}
(1 row)

select cs_group_last(Close,Day/3) from Quote_get('IBM');
      cs_group_last      
-------------------------
 float4:{20.2,40.2,50.5}
(1 row)

select cs_group_all('int8:{3,1,6,7,0,3,6,5,2,3,7}','int4:{1,1,1,2,2,3,3,4,5,5,5}');
   cs_group_all   
------------------
 int8:{0,0,2,5,2}
(1 row)

select cs_group_any('int2:{3,1,6,7,0,3,6,5,2,3,7}','char:{1,1,1,2,2,3,3,4,5,5,5}');
   cs_group_any   
------------------
 int2:{7,7,7,5,7}
(1 row)