Kylin window function

[Joanna He (Jingke He)]

Anyone familiar with kylin window function? I am trying to get running total of 
past 12 months sales based on sql below and I am having difficulties getting 
the correct syntax.
The tech blog below mentioned kylin syntax follow calcite but on the calcite 
function page, it does not specify the syntax within the window.



select g.categ_lvl3_name
,c.month_id
,sum(price) as sales
from KYLIN_Sales s
join KYLIN_CAL_DT c
on s.part_dt=c.cal_dt
join KYLIN_CATEGORY_GROUPINGS g
on s.leaf_categ_id=g.leaf_categ_id
and s.LSTG_SITE_ID=g.SITE_ID
group  by g.categ_lvl3_name, month_id
order by g.categ_lvl3_name,month_id


何京珂
Joanna He