[3] You choose

SELECT * FROM gallery2 WHERE topic_id="1006940" UNION SELECT * FROM gallery2 WHERE topic_id="1245461" UNION SELECT * FROM gallery2 WHERE topic_id="1604031" UNION SELECT * FROM gallery2 WHERE topic_id="574220" UNION SELECT * FROM gallery2 WHERE topic_id="768634" UNION SELECT * FROM gallery2 WHERE topic_id="664890" UNION SELECT * FROM gallery2 WHERE topic_id="857374" UNION SELECT * FROM gallery2 WHERE topic_id="1771671" UNION SELECT * FROM gallery2 WHERE topic_id="480531" UNION SELECT * FROM gallery2 WHERE topic_id="398946" UNION SELECT * FROM gallery2 WHERE topic_id="833755" UNION SELECT * FROM gallery2 WHERE topic_id="50647" UNION SELECT * FROM gallery2 WHERE topic_id="557357" UNION SELECT * FROM gallery2 WHERE topic_id="666758" UNION SELECT * FROM gallery2 WHERE topic_id="937043" UNION SELECT * FROM gallery2 WHERE topic_id="1343137"