Window functions in SQLite3

Question

The following Oracle SQL select allows me to select all the rows of a table that are duplicated according to some fields, eg, they have the same COLUMN_1,

Answer 1

The following query can get you close to what you want:

SELECT t1.*
FROM MY_TABLE t1
LEFT JOIN
(
    SELECT COLUMN_2, COLUMN_3, MIN(COLUMN_1) AS MIN_COLUMN_1
    FROM MY_TABLE
    GROUP BY COLUMN_2, COLUMN_3
) t2
    ON t1.COLUMN_2 = t2.COLUMN_2 AND
       t1.COLUMN_3 = t2.COLUMN_3 AND
       t1.COLUMN_1 = t2.MIN_COLUMN_1
WHERE
    t2.COLUMN_2 IS NULL;

This query works by filtering off records having the minimum COLUMN_1 value for each COLUMN_2, COLUMN_3 group. Actually, this corresponds to the rank rather than the row number, but maybe this is acceptable to you.