我希望在数据库中找到重复项 - 但也会显示所有重复记录。我目前的查询:
SELECT 'duplicate' as dup,c.Id, c.CreatedDate, c.email, c.Lead_Grade__c, count(c.email)
FROM contact as c
Inner Join (select c.Id, c.email FROM contact as c group by c.email having count(c.email) > 1) as dup
ON c.email = dup.email
WHERE Lead_Grade__c is null;
这可以为每个重复记录提供1行。我希望每个重复记录有2行(或更多行)。因此,如果记录X和记录Y都有相同的电子邮件,那么我想同时显示两者。
有什么想法吗?
谢谢!
答案 0 :(得分:1)
这会将联系人加入到自身,只显示电子邮件相同但有多条记录的记录(假设ID是唯一值)
此结果集只应重复。
SELECT A.*
FROM contact A
INNER JOIN CONTACT B
on A.email = B.email
and a.id <> b.ID
ORDER BY A.Email