select cs_window_max(Close,3) from Quote_get('IBM');
           cs_window_max           
-----------------------------------
 float4:{10.5,20.2,30.2,40.2,50.5}
(1 row)

select cs_window_min(Close,3) from Quote_get('IBM');
        cs_window_min        
-----------------------------
 float4:{0,0,10.5,20.2,30.2}
(1 row)

select cs_window_sum(Close,3) from Quote_get('IBM');
           cs_window_sum            
------------------------------------
 float8:{10.5,30.7,60.9,90.6,120.9}
(1 row)

select cs_window_avg(Close,3) from Quote_get('IBM');
            cs_window_avg            
-------------------------------------
 float8:{3.5,10.2333,20.3,30.2,40.3}
(1 row)

select cs_window_var(Close,3) from Quote_get('IBM');
                 cs_window_var                 
-----------------------------------------------
 float8:{24.5,68.0422,64.6867,66.6667,68.6867}
(1 row)

select cs_window_dev(Close,3) from Quote_get('IBM');
                  cs_window_dev                  
-------------------------------------------------
 float8:{4.94975,8.24877,8.0428,8.16497,8.28774}
(1 row)

--- Leave only elements corresponding to entire window
select cs_limit(cs_window_max(Close,3), 2) from Quote_get('IBM');
        cs_limit         
-------------------------
 float4:{30.2,40.2,50.5}
(1 row)

select cs_window_min(Close,3) << 2 from Quote_get('IBM');
        ?column?         
-------------------------
 float4:{10.5,20.2,30.2}
(1 row)

select cs_window_sum(Close,3) << 2 from Quote_get('IBM');
         ?column?         
--------------------------
 float8:{60.9,90.6,120.9}
(1 row)

select cs_window_avg(Close,3) << 2 from Quote_get('IBM');
        ?column?         
-------------------------
 float8:{20.3,30.2,40.3}
(1 row)

select cs_window_var(Close,3) << 2 from Quote_get('IBM');
             ?column?             
----------------------------------
 float8:{64.6867,66.6667,68.6867}
(1 row)

select cs_window_dev(Close,3) << 2 from Quote_get('IBM');
            ?column?             
---------------------------------
 float8:{8.0428,8.16497,8.28774}
(1 row)

--- 2-days EMA (Exponential Moving Average)
select cs_window_ema(Close,3) from Quote_get('IBM');
               cs_window_ema                
--------------------------------------------
 float8:{10.5,15.35,22.775,31.4875,40.9938}
(1 row)

--- 2-days ATR (Average True Range)
select cs_window_atr(cs_maxof(High-Low,cs_concat('float4:{0}',cs_maxof(cs_abs((High<<1) - Close), cs_abs((Low<<1) - Close)))), 3) << 2 from Quote_get('IBM');
             ?column?             
----------------------------------
 float8:{7.16667,8.37778,9.18518}
(1 row)