正确过滤 table 其中包含同一帐户内的多个记录

Question

我需要加入table“客户”和table“评论”。我想从“客户”table 中找出创建于 2021 年 3 月 24 日的帐户。随后，过滤那些在“评论”table的“comment_desc”栏中没有“休眠”字样的帐户。参考我的SQL，表格和预期结果：

My SQL:
Select customer.account, customer.creation_date, customer.country 
From DATABASE.customer, DATABASE.comment
Where customer.account=comment.account
And customer.creation_date = '03/24/2021'
And comment.comment_desc not like '%Dormant%'

Table 1: Customer
account | creation_date | country
1111111 | 24/3/2021     | AU
2222222 | 25/3/2021     | NZ
3333333 | 24/3/2021     | AU
4444444 | 24/3/2021     | AU
5555555 | 24/3/2021     | NZ

Table 2: Comment
account | comment_date  | comment_desc
1111111 | 24/3/2021     | newly created
1111111 | 24/3/2021     | callback
1111111 | 25/3/2021     | Update rate
1111111 | 25/3/2021     | Sales follow up
2222222 | 25/3/2021     | newly created
2222222 | 25/3/2021     | Sales follow up
2222222 | 25/3/2021     | Update rate
3333333 | 24/3/2021     | callback
3333333 | 25/3/2021     | manual Dormant
4444444 | 24/3/2021     | Update rate
4444444 | 24/3/2021     | Update account info
4444444 | 24/3/2021     | Sales follow up
5555555 | 24/3/2021     | Update rate
5555555 | 24/3/2021     | Dormant entry

Expected Result:
account  | creation_date | country
1111111  | 24/3/2021     | AU
4444444  | 24/3/2021     | AU

请协助建议我应该如何 revise/improve 我的 SQL。

Answer 1

你可以这样做：

select *
from customer
where creation_date = '03/24/2021'
  and account not in (
    select account from comment where comment_desc like '%Dormant%'
  )

正确过滤 table 其中包含同一帐户内的多个记录

Proper filtering of table which contains multiple records within the same account

sql

teradata

teradatasql