Mensaje
De
12/03/2010 17:23:54
a
12/03/2010 17:19:58
General information
Foro:
Microsoft SQL Server
Category:
Sintáxis SQL
Título:
Environment versions
SQL Server:
SQL Server 2005
Miscellaneous
ID de la conversación:
01454248
ID del mensaje:
01454255
Views:
28
>>I am sure this question has been asked million times but here is a million one:
>>
>>What SQL Select to use to find all records with duplicate entries? I am trying to add a UNIQUE constraint to a table but get error that duplicate rows exist.
>>
>>TIA.
>
>SQL Server 2005 and up
>
>SQL Server 2000 solution
>
>>
>>What SQL Select to use to find all records with duplicate entries? I am trying to add a UNIQUE constraint to a table but get error that duplicate rows exist.
>>
>>TIA.
>
>SQL Server 2005 and up
>
>select * from (select *, >count(*) over (partition by GroupField) as cntDups from myTable) X where cntDups > 1>
>SQL Server 2000 solution
>
>select T.* from myTable T >inner join (select GroupField, count(*) as cntDups from myTable group by GroupField having count(*) > 1) X >on T.GroupField = X.GroupFieldWhat is "X" in your expression?
"The creative process is nothing but a series of crises." Isaac Bashevis Singer
"My experience is that as soon as people are old enough to know better, they don't know anything at all." Oscar Wilde
"If a nation values anything more than freedom, it will lose its freedom; and the irony of it is that if it is comfort or money that it values more, it will lose that too." W.Somerset Maugham
"My experience is that as soon as people are old enough to know better, they don't know anything at all." Oscar Wilde
"If a nation values anything more than freedom, it will lose its freedom; and the irony of it is that if it is comfort or money that it values more, it will lose that too." W.Somerset Maugham