Can you please tell me what SQL query
can I use to change duplicates in one column of my table?
I found these duplicates:
SELECT Model, count(*) FROM Devices GROUP BY model HAVING count(*) > 1;
I was looking for information on exactly how to change one of the duplicate values, but unfortunately I did not find a specific option for myself, and all the more information is all in abundance filled by deleting the duplicate value line, which I don't need. Not strong in SQL at all. I ask for help. Thank you so much.
After the command:
SELECT Model, count (*) FROM Devices GROUP BY model HAVING count (*)> 1;
i get the result:
after applying your command:
update Devices set
Model = '-'
where id not in
(select
min(Devices .id)
from Devices
group by Devices.Model)
i got 4035 lines changed. if you count, it turns out, (3383 + 1895) = 5278 - 1243 = 4035 and it seems like everything fits together, the result suits, it works.