在 Snowflake 中翻转 table 中的多列和多行

Question

无法旋转雪花中的多列，如果有人能帮助我，我将不胜感激：

我基本上在左边的屏幕截图中附上了table，需要将其更改为右边的格式。我想知道 pivot 在这种情况下是否可以工作？

我当前的代码：

select 
CONCAT(RIGHT(TO_VARCHAR(YEAR(DATE)),2),'-Q',TO_VARCHAR(QUARTER(DATE)) ) closed_date,
IFNULL(sum(case when STAG='Closed' then REVENUE_AMOUNTS end),0) REVENUE AMER,
IFNULL(sum(case when STAG='Closed' then REVENUE_AMOUNTS end),0) REVENUE APAC,
IFNULL(sum(case when STAG='Closed' then REVENUE_AMOUNTS end),0) REVENUE EMEA

from REVENUE_TABLE
where 1=1
group by 1
order by 1 asc

link to screenshot

Answer 1

因此假设您发布的 SQL 更像这样（在 CTE 中包含虚假数据）

WITH REVENUE_TABLE as (
    SELECT * FROM VALUES
    ('Closed', 1, '2020-01-01'::date, 'amer'),
    ('Closed', 2, '2020-04-01'::date, 'apac'),
    ('Closed', 3, '2020-08-01'::date, 'emea'),
    ('Closed', 4, '2021-01-01'::date, 'emea')
    v(stag, REVENUE_AMOUNTS, date, loc)
)
select 
    CONCAT(RIGHT(TO_VARCHAR(YEAR(DATE)),2),'-Q',TO_VARCHAR(QUARTER(DATE)) ) closed_date,
    ZEROIFNULL(sum(IFF(loc='amer' AND STAG='Closed', REVENUE_AMOUNTS, null))) as REVENUE_AMER,
    ZEROIFNULL(sum(IFF(loc='apac' AND STAG='Closed', REVENUE_AMOUNTS, null))) as REVENUE_APAC,
    ZEROIFNULL(sum(IFF(loc='emea' AND STAG='Closed', REVENUE_AMOUNTS, null))) as REVENUE_EMEA
from REVENUE_TABLE
group by 1
order by 1 asc

我把你 CASE 换成 IFF 并把它属于哪一列。我把 IFNULL(x, 0) 换成 ZEROIFNULL(x) 时间更长，它更专心清除。

它给出的结果看起来像您现有的输出：

CLOSED_DATE	REVENUE_AMER	REVENUE_APAC	REVENUE_EMEA
20-Q1	1	0	0
20-Q2	0	2	0
20-Q3	0	0	3
21-Q1	0	0	4

因此，如果这符合“现状”，那么要到达“你想去的地方”，你需要找到一组不同的值或位置，然后根据它加入你的结果。

select l.loc,
    ZEROIFNULL(sum(IFF(r.cd='20-Q1', r.REVENUE_AMOUNTS, null))) as "20-Q1",
    ZEROIFNULL(sum(IFF(r.cd='20-Q2', r.REVENUE_AMOUNTS, null))) as "20-Q2",
    ZEROIFNULL(sum(IFF(r.cd='20-Q3', r.REVENUE_AMOUNTS, null))) as "20-Q3",
    ZEROIFNULL(sum(IFF(r.cd='21-Q1', r.REVENUE_AMOUNTS, null))) as "21-Q1"
from (
    select distinct loc 
    FROM REVENUE_TABLE
) as l
left join (
    select loc, 
        revenue_amounts,
        CONCAT(RIGHT(TO_VARCHAR(YEAR(DATE)),2),'-Q',TO_VARCHAR(QUARTER(DATE)) ) cd 
    FROM REVENUE_TABLE
    WHERE STAG='Closed'
) as r on l.loc = r.loc
group by 1
order by 1 asc;

给出：

LOC	20-Q1	20-Q2	20-Q3	21-Q1
amer	1	0	0	0
apac	0	2	0	0
emea	0	0	3	4

现在这种模式的缺点是您需要明确知道列名，但是在 PIVOT 情况下您也有这个问题。我相信这可以通过雪花脚本来解决。

在 Snowflake 中翻转 table 中的多列和多行

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snowflake-cloud-data-platform