Flexible

SELECT * FROM gallery2 WHERE topic_id="839258" UNION SELECT * FROM gallery2 WHERE topic_id="1827582" UNION SELECT * FROM gallery2 WHERE topic_id="1500960" UNION SELECT * FROM gallery2 WHERE topic_id="481490" UNION SELECT * FROM gallery2 WHERE topic_id="953996" UNION SELECT * FROM gallery2 WHERE topic_id="1651171" UNION SELECT * FROM gallery2 WHERE topic_id="755694" UNION SELECT * FROM gallery2 WHERE topic_id="533033" UNION SELECT * FROM gallery2 WHERE topic_id="761387" UNION SELECT * FROM gallery2 WHERE topic_id="1520217" UNION SELECT * FROM gallery2 WHERE topic_id="869757" UNION SELECT * FROM gallery2 WHERE topic_id="95765" UNION SELECT * FROM gallery2 WHERE topic_id="1497169" UNION SELECT * FROM gallery2 WHERE topic_id="1237152" UNION SELECT * FROM gallery2 WHERE topic_id="598457" UNION SELECT * FROM gallery2 WHERE topic_id="1593062"