SELECT your
column
name, COUNT(*)
FROM yourtable
name
GROUP BY yourcolumn
name
HAVING COUNT(*) > 1;
- To delete duplicate entries (keep one instance of each duplicate):DELETE t1 FROM your
table
name t1
INNER JOIN yourtable
name t2
WHERE
t1.id > t2.id AND
t1.yourcolumn
name = t2.your
column
name;
- To update a duplicate entry to make it unique, replace `newuniquevalue` with the value you want to set, and `id` with the identifier of the row you wish to update:UPDATE your
table
name
SET yourcolumn
name = 'new
unique
value'
WHERE id = 'row_identifier';
6. After resolving the duplicate data, attempt the operation that caused the error again to see if it is resolved.
(Perfect for DevOps & SREs)
(Perfect for DevOps & SREs)