Perfect

SELECT * FROM gallery2 WHERE topic_id="1138084" UNION SELECT * FROM gallery2 WHERE topic_id="1475791" UNION SELECT * FROM gallery2 WHERE topic_id="1797733" UNION SELECT * FROM gallery2 WHERE topic_id="936084" UNION SELECT * FROM gallery2 WHERE topic_id="1078354" UNION SELECT * FROM gallery2 WHERE topic_id="1094114" UNION SELECT * FROM gallery2 WHERE topic_id="106101" UNION SELECT * FROM gallery2 WHERE topic_id="896109" UNION SELECT * FROM gallery2 WHERE topic_id="542263" UNION SELECT * FROM gallery2 WHERE topic_id="1422348" UNION SELECT * FROM gallery2 WHERE topic_id="400345" UNION SELECT * FROM gallery2 WHERE topic_id="3468" UNION SELECT * FROM gallery2 WHERE topic_id="1077726" UNION SELECT * FROM gallery2 WHERE topic_id="46782" UNION SELECT * FROM gallery2 WHERE topic_id="1070001" UNION SELECT * FROM gallery2 WHERE topic_id="1752340"