Question

我有以下数据：

Supplier Name     Supplier City     Supplier Country      Spend
Supplier A        New York          US                    500,000
Supplier A        Dublin            Ireland               300,000
Supplier B        London            UK                    400,000
Supplier C        Austin            US                    300,500
Supplier C        London            UK                    200,000
Supplier D        Barcelona         Spain                 500,000
Supplier D        Paris             France                650,000

我希望仅获得欧洲区域供应商的数据，而不是同样在美国运营的供应商的数据。因此，根据上述数据，我仅需要供应商B和D，因为供应商B和C也在美国运营（分别为纽约和奥斯汀）。

我正在尝试类似的事情：

select
supplier_name,
  supplier_city, supplier_country, spend
from
supplier_detail
where
supplier_name IN (select distinct supplier_name, supplier_city, supplier_country from supplier_detail where supplier_country<>'US')

问题在于，这仍然返回供应商A（对于纽约）和供应商C（对于奥斯丁）。

有人可以帮忙吗？

谢谢。 A

Answer 1

我将在此处使用聚合：

SELECT sd1.supplier_name, sd1.supplier_city, sd1.supplier_country, sd1.spend
FROM supplier_detail sd1
INNER JOIN
(
    SELECT supplier_name
    FROM supplier_detail
    GROUP BY supplier_name
    HAVING COUNT(CASE WHEN supplier_country = 'US' THEN 1 END) = 0
) sd2
    ON sd1.supplier_name = sd2.supplier_name

Demo

Answer 2

使用not exists：

select supplier_name, supplier_city, supplier_country, spend
from supplier_detail s
where not exists (
  select 1 from supplier_detail
  where supplier_name = s.supplier_name and supplier_country = 'US'
)

假设所有其他国家/地区都来自欧洲。
或者：

select supplier_name, supplier_city, supplier_country, spend
from supplier_detail 
where supplier_name not in (
  select supplier_name from supplier_detail
  where supplier_country = 'US'
)

Answer 3

您可以使用agrep( pattern = target, x = text, value = TRUE )：

[
   {
       "ID": "FIRST",
       "Name" : "FirstName",
       "ZIP" : "0815"
   },
   {
       "ID": "SECOND",
       "Name" : "SecondName",
       "ZIP" : "4711"
   },
   {
       "ID": "THIRD",
       "Name" : "ThirdName",
       "ZIP" : "123"
   }
]

您还可以使用：

not exists

我不确定列出欧洲国家或列出世界其他国家是否更容易。

Answer 4

您应该像这样逆转条件：

SELECT
  supplier_name,
  supplier_city, 
  supplier_country, 
  spend
FROM
  supplier_detail
WHERE
  supplier_name NOT IN (
    SELECT DISTINCT supplier_name 
    FROM supplier_detail 
    WHERE supplier_country = 'US')

请参见示例HERE

where子句中的子查询-SQL查询

4 个答案:

Demo