通过查询检查分区中列值的所有值是否相同

Question

我想在分区查询中查找列的所有值是否都相同。

+----------------------------------------+
|b_name |category|indicator |amount|id   |
+-------|--------|----------|------|-----|
|BUCKET1|CAT1    |Y         | 211.8|21006|
|BUCKET2|CAT1    |N         |275.88|21006|
|BUCKET1|CAT2    |Y         | 265.4|21008|
|BUCKET2|CAT2    |Y         | 289.8|21008|
|BUCKET1|CAT3    |N         | 180.6|21011|
|BUCKET2|CAT3    |N         |180.36|21011|
+----------------------------------------+

我想获取基于指标列的数据，其中类别和 ID 列组的所有值都相同。

指标值与'Y'相同的数据

+------------------------------------+
|b_name | category | amount | id     |
+------------------------------------+
|BUCKET1| CAT1     | 211.8  | 21006  |
|BUCKET2| CAT1     | 275.88 | 21006  |
|BUCKET1| CAT3     | 180.6  | 21011  |
|BUCKET2| CAT3     | 180.36 | 21011  |
+------------------------------------+

指标列不同值的数据和（指标列相同值仅'N'）

+------------------------------------+
|b_name | category | amount | id     |
+------------------------------------+
|BUCKET2| CAT2     | 275.88  | 21008  |
+------------------------------------+

请帮助我获取格式数据的方法。我想要相应行的正确 b_name 列值。

Answer 1

对于第一种情况，可以使用如下解析函数：

SELECT * FROM
(SELECT T.*,
       COUNT(1) OVER (PARTITION BY ID) AS TOTAL_COUNT_ID,
       SUM(CASE WHEN INDICATOR = 'Y' THEN 1 ELSE 0 END) AS Y_COUNT
 FROM YOUR_TABLE T) T
 WHERE TOTAL_COUNT_ID > Y_COUNT;

Answer 2

一个选项使用 window 函数：

select *
from (
    select t.*,
        min(indicator) over(partition by category, id) min_indicator,
        max(indicator) over(partition by category, id) max_indicator
    from mytable t
) t
where min_indicator = max_indicator

这为您提供了一组行，其中只有一个不同的指标值。您可以轻松地调整它以过滤给定的指标值：

where min_indicator = max_indicator and min_indicator = 'Y'

或者您可以过滤具有两个不同值的组：

where min_indicator <> max_indicator

Answer 3

drop table bucket_data;
create table bucket_data(b_name varchar2(100),category varchar2(100),
indicator VARCHAR2(2),amount number(10),id number(10));

insert into bucket_data values('BUCKET1','CAT1','Y',211.8,21006);
insert into bucket_data values('BUCKET2','CAT1','N',275.88,21006);
insert into bucket_data values('BUCKET1','CAT2','Y',265.4,21008);
insert into bucket_data values('BUCKET2','CAT2','Y',289.8,21008);
insert into bucket_data values('BUCKET1','CAT3','N',180.6,21011);
insert into bucket_data values('BUCKET2','CAT3','N',180.36,21011);

commit;

+------------------------------------+
|b_name | category | amount | id     |
+------------------------------------+
|BUCKET1| CAT1     | 211.8  | 21006  |
|BUCKET2| CAT1     | 275.88 | 21006  |
|BUCKET1| CAT3     | 180.6  | 21011  |
|BUCKET2| CAT3     | 180.36 | 21011  |
+------------------------------------+



 
 with d as(select t.*,count(1) over(partition by CATEGORY,INDICATOR) cnt from bucket_data t
 where INDICATOR <='Y') ,
 d1 as(select t.*,count(1) over(partition by CATEGORY,INDICATOR) cnt from bucket_data t
 where INDICATOR <='N')
 select * from d1,d
 where d1.id<>d.id 
 order by 1 
 fetch first 2 rows only;

通过查询检查分区中列值的所有值是否相同

Check if all the values of a column values are same in a partition by query

mysql

sql

group-by

having

partition-by