Level Extreme platform
Subscription
Corporate profile
Products & Services
Support
Legal
Français
Sql to find duplicates
Message
General information
Forum:
Visual FoxPro
Category:
Coding, syntax & commands
Miscellaneous
Thread ID:
00811118
Message ID:
00811161
Views:
12
Allen,

How about
select * from lineitems ;
where lineitems_id IN (select lineitems_id from lineitems ;
                       group by 1 ;
                       having count(lineitems_id) > 1) ;
order by lineitems_id ;
into cursor curDupes
>>>>>Hi,
>>>>>Can someone help me with the SQL to find all duplicates in a field?
>>>>>Thanks,
>>>>>Allen
>>>>
select KeyFld, count(*) as CntDups from TestDups group by 1 ;
>>>>     having CntDups > 1 ;
>>>>     into cursor curDupes
>>>>
>>>
>>>Sorry but I did get it...
>>>Keyfld for me is lineitems_id
>>>TestDups table is lineitems
>>>What's CntDups... a variable?
>>>
>>>Allen

>>
>>
>>CntDups becomes a calculated field in your query result (cursor).
>>Basically you are saying to group by "lineitems_id" and count how many show up. Then disregard the ones that show up only once and show only 2 or more instances ("having CntDups > 1").
>>
>>
>>select lineitems_id, count(*) as CntDups ;
>>from lineitems ;
>>group by 1 ;
>>having CntDups > 1 ;
>>into cursor curDupes
>>
>>
>>Clearer?
>
>Thank you. It's clearer and works but I needed another thing...
>What you gave me shows the duplicate record and the times it's duplicated, but I was trying to get the duplicate records, record by record. So that each record is listed.
>Thanks,
>Allen
Mike C.
-------
I keep trying to find a life of my own, apart from you.
DC Talk/Charlie Peacock, In the Light.
www.risensystems.com/ra/itlbegin.rm
Previous
Next
Reply
Map
View

Click here to load this message in the networking platform