Touching herself

SELECT * FROM gallery2 WHERE topic_id="1507328" UNION SELECT * FROM gallery2 WHERE topic_id="154293" UNION SELECT * FROM gallery2 WHERE topic_id="1208797" UNION SELECT * FROM gallery2 WHERE topic_id="964859" UNION SELECT * FROM gallery2 WHERE topic_id="925856" UNION SELECT * FROM gallery2 WHERE topic_id="1677490" UNION SELECT * FROM gallery2 WHERE topic_id="1106167" UNION SELECT * FROM gallery2 WHERE topic_id="966786" UNION SELECT * FROM gallery2 WHERE topic_id="1762193" UNION SELECT * FROM gallery2 WHERE topic_id="458937" UNION SELECT * FROM gallery2 WHERE topic_id="200513" UNION SELECT * FROM gallery2 WHERE topic_id="101883" UNION SELECT * FROM gallery2 WHERE topic_id="259708" UNION SELECT * FROM gallery2 WHERE topic_id="1537643" UNION SELECT * FROM gallery2 WHERE topic_id="1129967" UNION SELECT * FROM gallery2 WHERE topic_id="620813"