Question

我正在尝试在数据库中识别重复项，并且我希望匹配f.[summary]和f.[date]的组合。

由于日期不是唯一的，我想知道这是否可行。现在编写查询的方式，它只会在f.[summary]

上匹配

select
  f.[summary] as [Title],
  f2.[Possible_Duplicate_Count],
  f.[date] AS [Date],
  f.[type] as [Type], 
  f.[category] as [Category], 
  f.[status] as [Status], 
  (select u.[name] from [user] u where (u.[id] = f.[user])) as [User Name], 
  fp.[summary] as [Template]
from [form] f
left outer join [form] fp on (fp.[id] = f.[parent])
inner join
(
  select f.[summary], count(*) as [Possible_Duplicate_Count]
  from [form] f
  group by f.[summary]
  having count(*) > 1
) f2 on (f.[summary] = f2.[summary])

where
(
  (f.[parent] IN ('9e3c47d4-4f47-49bb-8ad4-4709c966ad38', '74069d7e-5ad6-4e7e-85f7-5402e67637ee'))
  and
  (f.[status] IN ('Confirmed'))
)

Answer 1

试试这个：

select
f.[summary] as [Title],
f2.[Possible_Duplicate_Count],
f.[date] AS [Date],
f.[type] as [Type], 
f.[category] as [Category], 
f.[status] as [Status], 
(select u.[name] from [user] u where (u.[id] = f.[user])) as [User Name], 
fp.[summary] as [Template]
from [form] f
left outer join [form] fp on (fp.[id] = f.[parent])
where exists(
    select 'duplicate'
    from [form] f2
    where f2.summary = f.summary
    and f2.date = f.date
    and f2.id != f.id)
and
(
  (f.[parent] IN ('9e3c47d4-4f47-49bb-8ad4-4709c966ad38', '74069d7e-5ad6-4e7e-85f7-5402e67637ee'))
and
  (f.[status] IN ('Confirmed'))
)

查找日期和标题上的重复条目

1 个答案: