How to delete records in the table which are repeated?

Question

Hi Here i came across a situation in which by mistakenly Without dropping the table i have run the batch file of the table which consists of some insert statements in detail

Answer 1

To just delete the duplicate new rows and leave the old ones in place (on the basis that I assume there are already other tables whose rows refer to the original rows):-

DELETE FROM alert_priority
WHERE Id IN (SELECT MaxId
FROM (SELECT priority_name, MAX(Id) AS MaxId, COUNT(Id)  AS CountId
FROM alert_priority
GROUP BY priority_name
HAVING CountId > 1))