sql - Return unique rows based on minimum id in mysql -

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i've stuck on this:
need guid based on minimum id , remove other duplicates (guid, id). id unique field here.

+-----------------------------+------+-------------+ | guid                        | id   | post_parent | +-----------------------------+------+-------------+ | 5.jpg                       | 7626 |        2418 | | 3.jpg                       | 7625 |        2418 | | 2.jpg                       | 5972 |        2418 | | 2.jpg                       | 3000 |        2420 | | 0.jpg                       | 3205 |        2420 | | 9.jpg                       | 9205 |        2419 | +-----------------------------+------+-------------+

so want:

+-----------------------------+------+-------------+ | guid                        | id   | post_parent | +-----------------------------+------+-------------+ | 2.jpg                       | 5972 |        2418 | | 2.jpg                       | 3000 |        2420 | | 9.jpg                       | 9205 |        2419 | +-----------------------------+------+-------------+

sure, may use this: 

select guid,        id         wp_posts id = (          select min(id) wp_posts          post_parent="2418");

but need data table, not single rows.

select *    wp_posts p,        (select min(id) id, post_parent           wp_posts        group post_parent) mins   p.id = mins.id , mins.post_parent = p.post_parent

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