sum(drug_psn_cnt) over (partition by gend) as "性别统计总和",-- 性别统计总和,同一性别总和不变。 SUM (drug_psn_cnt) OVER () as "所有性别人数总和", --"所有性别人数总和" , round(drug_psn_cnt/round( sum(drug_psn_cnt) over (partition by gend),4)*100,4)||'%' "各个药品分类占比", SUM (drug_psn_cnt) OVER () as "所有...
ROUND(AVG(amount)OVERw3h,2)ASh3_amount_avg, FIRST_VALUE(amount)OVERw3hASh3_amount_first, LAST_VALUE(amount)OVERw3hASh3_amount_last, MAX(amount)OVERw3hASh3_amount_max, MIN(amount)OVERw3hASh3_amount_min, * FROMsample_01 WINDOW w1hAS(PARTITIONBYcard_numORDERBYtraded_atRANGEBETWEEN'30 minutes...
<窗口函数> over (partition <用于分组的列名> order by <用于排序的列名>) 1. 2. 2.其他专用窗口函数 专用窗口函数rank, dense_rank, row_number有什么区别呢? select * , rank() over (order by 成绩 desc) as rank, dense_rank() over (order by 成绩 desc) as dense_rank, row_number() over...
sum(price)over(partition by type)类别金额合计,(sum(price)over(order by type))/
3、dense_rank() over(partition by ... order by ...) 4、count() over(partition by ... order by ...) 5、max() over(partition by ... order by ...) 6、min() over(partition by ... order by ...) 7、sum() over(partition by ... order by ...) ...
channel,day_sum,sum(caseproduct when'产品1'then amount end)asc1,sum(caseproduct when'产品2'then amount end)asc2,sum(caseproduct when'产品3'then amount end)asc3from(select*,sum(amount)over(partition by channel)asday_sum from report1 where date=to_date('2021-05-04','yyyy-MM-dd'))ast...
我们想要的不是所有收益的总和,而是每个波段计算的总和,这是通过在窗口函数的OVER子句中添加PARTITION来获得的。 SELECT band, name, round(100 * earnings / Sum(earnings) OVER (PARTITION BY band), 1) AS percent FROM musicians ORDER BY band, percent; 每个乐队的总收入百分比 最后,为了完整起见,以下是...
其中,window_function 是窗口函数的名称;expression 是参数,有些函数不需要参数;OVER子句包含三个选项:分区(PARTITION BY)、排序(ORDER BY)以及窗口大小(frame_clause)。 分区选项(PARTITION BY) PARTITION BY选项用于定义分区,作用类似于GROUP BY的分组。如果指定了分区选项,窗口函数将会分别针对每个分区单独进行分析;如...
ROWS模式按行来界定窗口范围。RANGE模式依据数值范围确定窗口。开窗函数可结合OVER关键字使用。OVER子句中可指定PARTITION BY子句进行分组。PARTITION BY能将数据按指定列分成不同组。比如按部门对员工数据进行分组分析。开窗函数还能搭配ORDER BY子句排序。ORDER BY用于对窗口内数据排序处理。按销售额对产品记录进行排序计算...
select ename,job,sal,ROW_NUMBER() over (PARTITION BY job ORDER BY SAL ) as unique_rankin from emp; 专用窗口函数使用技巧 使用RANK 或 ROW_ NUMBER 时无需任何参数,只需要像 RANK ()或者 ROW_ NUMBER() 这样保持括号中为空就可以了。这也是专用窗口函数通常的使用方式。