我有以下根据变量“节点”分组的数据。我想将一些数据分组。有没有比以下更优雅的方法：
proc sql;
create table delete
(t0avgStakeRank num,
eventtime num,
previousnode char(10),
bettors num);
quit;
proc sql;
insert into delete
(t0avgStakeRank, eventtime, previousnode, bettors)
values(0,1,' ',1000)
values(0,2, 'L',500)
values(0,2, 'W',500)
values(0,3, 'LL',250)
values(0,3, 'LW',250)
values(0,3, 'WL',250)
values(0,3, 'WW',250)
values(0,4, 'LLL',125)
values(0,4, 'LLW',125)
values(0,4, 'LWL',125)
values(0,4, 'LWW',125)
values(0,4, 'WLL',125)
values(0,4, 'WLW',125)
values(0,4, 'WWL',125)
values(0,4, 'WWW',125)
values(0,5, 'LLLL',62.5)
values(0,5, 'LLLW',62.5)
values(0,5, 'LLWL',62.5)
values(0,5, 'LLWW',62.5)
values(0,5, 'LWLL',62.5)
values(0,5, 'LWLW',62.5)
values(0,5, 'LWWL',62.5)
values(0,5, 'LWWW',62.5)
values(0,5, 'WLLL',62.5)
values(0,5, 'WLLW',62.5)
values(0,5, 'WLWL',62.5)
values(0,5, 'WLWW',62.5)
values(0,5, 'WWLL',62.5)
values(0,5, 'WWLW',62.5)
values(0,5, 'WWWL',62.5)
values(0,5, 'WWWW',62.5)
values(1,1, '',1000)
values(1,2, 'L',500)
values(1,2, 'W',500)
values(1,3, 'LL',250)
values(1,3, 'LW',250)
values(1,3, 'WL',250)
values(1,3, 'WW',250)
values(1,4, 'LLL',125)
values(1,4, 'LLW',125)
values(1,4, 'LWL',125)
values(1,4, 'LWW',125)
values(1,4, 'WLL',125)
values(1,4, 'WLW',125)
values(1,4, 'WWL',125)
values(1,4, 'WWW',125)
values(1,5, 'LLLL',62.5)
values(1,5, 'LLLW',62.5)
values(1,5, 'LLWL',62.5)
values(1,5, 'LLWW',62.5)
values(1,5, 'LWLL',62.5)
values(1,5, 'LWLW',62.5)
values(1,5, 'LWWL',62.5)
values(1,5, 'LWWW',62.5)
values(1,5, 'WLLL',62.5)
values(1,5, 'WLLW',62.5)
values(1,5, 'WLWL',62.5)
values(1,5, 'WLWW',62.5)
values(1,5, 'WWLL',62.5)
values(1,5, 'WWLW',62.5)
values(1,5, 'WWWL',62.5)
values(1,5, 'WWWW',62.5);
quit;
proc sort data=delete; by t0AvgStakeRank; run;
proc tabulate data=delete missing;
title ' ';
var bettors;
class t0avgstakerank eventTime previousnode;
table t0avgstakerank=""*eventTime=" "*(previousnode=" "), bettors*sum;
run;
这就是我到目前为止一直这样做的方式，以便我可以汇总各个组的总和。
proc sql;
create table grouped as
select distinct
t0avgstakerank,
eventtime,
case when previousnode in ( 'LW', 'WL') then "LW/WL"
when previousnode in ( 'LLW', 'LWL', 'LWW') then "LLW/LW*"
when previousnode in ( 'WLL', 'WLW', 'WWL') then "WL*/WWL"
when previousnode in ( 'LLLW', 'LLWL', 'LLWW','LWLL') then "LLLW/LLW*/LWLL"
when previousnode in ( 'LWLW', 'LWWL','LWWW','WLLL','WLLW','WLWL') then "LWLW/LWW*/WLL*/WLWL"
when previousnode in ( 'WLWW','WWLL','WWLW','WWWL') then "WLWW/WWL*/WWWL"
else previousnode end as previousnode_grouped,
case when previousnode in ( 'LW', 'WL') then (select sum(bettors) from delete as sub where previousnode in ( 'LW', 'WL') and sub.t0avgstakerank = main.t0avgstakerank)
when previousnode in ( 'LLW', 'LWL', 'LWW') then (select sum(bettors) from delete as sub where previousnode in ( 'LLW', 'LWL', 'LWW') and sub.t0avgstakerank = main.t0avgstakerank)
when previousnode in ( 'WLL', 'WLW', 'WWL') then (select sum(bettors) from delete as sub where previousnode in ( 'WLL', 'WLW', 'WWL') and sub.t0avgstakerank = main.t0avgstakerank)
when previousnode in ( 'LLLW', 'LLWL', 'LLWW','LWLL') then (select sum(bettors) from delete as sub where previousnode in ( 'LLLW', 'LLWL', 'LLWW','LWLL') and sub.t0avgstakerank = main.t0avgstakerank)
when previousnode in ( 'LWLW', 'LWWL','LWWW','WLLL','WLLW','WLWL') then (select sum(bettors) from delete as sub where previousnode in ( 'LWLW', 'LWWL','LWWW','WLLL','WLLW','WLWL') and sub.t0avgstakerank = main.t0avgstakerank)
when previousnode in ( 'WLWW','WWLL','WWLW','WWWL') then (select sum(bettors) from delete as sub where previousnode in ('WLWW','WWLL','WWLW','WWWL') and sub.t0avgstakerank = main.t0avgstakerank)
else bettors end as bettors_grp
from delete main;
退出;