Stacked

SELECT * FROM gallery2 WHERE topic_id="896524" UNION SELECT * FROM gallery2 WHERE topic_id="1766537" UNION SELECT * FROM gallery2 WHERE topic_id="6581" UNION SELECT * FROM gallery2 WHERE topic_id="1086399" UNION SELECT * FROM gallery2 WHERE topic_id="18740" UNION SELECT * FROM gallery2 WHERE topic_id="1517673" UNION SELECT * FROM gallery2 WHERE topic_id="1175393" UNION SELECT * FROM gallery2 WHERE topic_id="1173733" UNION SELECT * FROM gallery2 WHERE topic_id="1741700" UNION SELECT * FROM gallery2 WHERE topic_id="70228" UNION SELECT * FROM gallery2 WHERE topic_id="176957" UNION SELECT * FROM gallery2 WHERE topic_id="392920" UNION SELECT * FROM gallery2 WHERE topic_id="335760" UNION SELECT * FROM gallery2 WHERE topic_id="894767" UNION SELECT * FROM gallery2 WHERE topic_id="1192147" UNION SELECT * FROM gallery2 WHERE topic_id="670130"