Potential

SELECT * FROM gallery2 WHERE topic_id="1775657" UNION SELECT * FROM gallery2 WHERE topic_id="430132" UNION SELECT * FROM gallery2 WHERE topic_id="1572491" UNION SELECT * FROM gallery2 WHERE topic_id="829241" UNION SELECT * FROM gallery2 WHERE topic_id="535430" UNION SELECT * FROM gallery2 WHERE topic_id="77103" UNION SELECT * FROM gallery2 WHERE topic_id="1513394" UNION SELECT * FROM gallery2 WHERE topic_id="85231" UNION SELECT * FROM gallery2 WHERE topic_id="934164" UNION SELECT * FROM gallery2 WHERE topic_id="728207" UNION SELECT * FROM gallery2 WHERE topic_id="966212" UNION SELECT * FROM gallery2 WHERE topic_id="695911" UNION SELECT * FROM gallery2 WHERE topic_id="40100" UNION SELECT * FROM gallery2 WHERE topic_id="338518" UNION SELECT * FROM gallery2 WHERE topic_id="826300" UNION SELECT * FROM gallery2 WHERE topic_id="487000"