oracle 匹配当前相同的工资 (RANGE)、匹配当前行数据

oracle 匹配当前数据相同的工资 、匹配当前行数据

select 
regionid,name, lan_name ,sal ,
sum(sal) over (PARTITION by regionid ORDER BY sal range between 0 preceding and CURRENT  ROW row )sum  from test1;