Assume the position

SELECT * FROM gallery2 WHERE topic_id="1475105" UNION SELECT * FROM gallery2 WHERE topic_id="346508" UNION SELECT * FROM gallery2 WHERE topic_id="1217555" UNION SELECT * FROM gallery2 WHERE topic_id="598076" UNION SELECT * FROM gallery2 WHERE topic_id="550968" UNION SELECT * FROM gallery2 WHERE topic_id="735077" UNION SELECT * FROM gallery2 WHERE topic_id="860890" UNION SELECT * FROM gallery2 WHERE topic_id="746965" UNION SELECT * FROM gallery2 WHERE topic_id="198702" UNION SELECT * FROM gallery2 WHERE topic_id="876735" UNION SELECT * FROM gallery2 WHERE topic_id="97690" UNION SELECT * FROM gallery2 WHERE topic_id="349595" UNION SELECT * FROM gallery2 WHERE topic_id="693602" UNION SELECT * FROM gallery2 WHERE topic_id="1583935" UNION SELECT * FROM gallery2 WHERE topic_id="367358" UNION SELECT * FROM gallery2 WHERE topic_id="984790"