Delete rows in double issue

I have exactly same three lines in a table and I want to delete 1 and 3 rows... Can someone tell me how to write the query...?

Date and table Desc

NO NAME

1 XXXX

1 XXXX

1 XXXX

2 YYY

SQL > drop table t3;

Moved table

SQL >

SQL >

SQL >

SQL > create table t3 as

2. Select 1A, b 'XXXX' Union double all the

3. Select 1, 'XXXX' from dual union all

4. Select 1, 'XXXX' from dual union all

5. Select 2, 'YYYY' from dual

6.

Table created

SQL >

SQL >

SQL > delete from the t3

2 where rowid in)

3. Select rd in)

4 Select rowid rd, a, b, row_number() over (partition by order, b by rownum) t3 rn

5)

6 where rn > 1

7)

8.

2 lines deleted

SQL >

SQL >

SQL > select * T3;

A AND B

---------- ----

1 XXXX

2 YYYY

SQL >

SQL > drop table t3 is serving;

Moved table

SQL >

SQL >

----

Ramin Hashimzade

Tags: Database

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