To find and delete duplicate rows from a table, you can execute the query below. Note that this is for Oracle. You can use it for other databases but you need to change the ‘rowid’ then.
from table_name B
where A.column_name = B.column_name
You need to change the ‘table_name’ by your table name an the ‘column_name’ by your column you want to check on. To explain…