SQLite Android delete duplicates from table [duplicate]

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• Deleting duplicate rows from sqlite database 3 answers

i'm beginner, so sorry about stupied question.

I have table in my db looks like:

id|name

1 | a
2 | b
3 | c
4 | c
5 | d
6 | d
7 | e

how can I delete, duplicates c and d from activity?