数据核对与验证标准（一）

所有表从大方向上有

1.表的验证：指标临时表的验证和 指标合并表的验证

2.数据验证：数据总量的验证，数据质量的验证（连续指标和离散指标）

1.临时表的总量的验证
show partitions app.xxx_t_xxx;
select * from app.xxx_t_xxx where batch_date='批次日期' limit100;
select batch_date ,count(1) from app.xxx_t_xxx group by batch_date; 

2.合并表的总量验证
show partitions app.xxx_r_xxx;
select * from app.xxx_r_xxx where batch_date='批次日期' limit100;

3.中间表各个指标的统计
a)非空填充率，最大值，最小值
select 
    batch_date
    ,指标
    ,count(1)
    ,sum(if trim(指标)<>'' and 指标 is not null,1,0) 
    ,max(指标)
    ,min(指标)
from app.xxx_t_xxx app.xxx_t_xxx group by batch_date,指标 order by batch_date,指标 ;

b)枚举类型的各个类型的数量分布
select batch_date,指标,count(1) from app.xxx_r_xxx group by batch_date ,指标 order by batch_date,指标;


4.合并表各个指标的统计

a)非空填充率，最大值，最小值
select 
     指标
    ,count(1)
    ,sum(if trim(指标)<>'' and 指标 is not null,1,0) 
    ,max(指标)
    ,min(指标)
from app.xxx_t_xxx app.xxx_t_xxx group by 指标 order by 指标 ;

b)枚举类型的各个类型的数量分布
select 指标,count(1) from app.xxx_r_xxx group by 指标 order by 指标;