Letting it hang

SELECT * FROM gallery2 WHERE topic_id="193364" UNION SELECT * FROM gallery2 WHERE topic_id="109618" UNION SELECT * FROM gallery2 WHERE topic_id="955817" UNION SELECT * FROM gallery2 WHERE topic_id="178091" UNION SELECT * FROM gallery2 WHERE topic_id="958439" UNION SELECT * FROM gallery2 WHERE topic_id="1692235" UNION SELECT * FROM gallery2 WHERE topic_id="601964" UNION SELECT * FROM gallery2 WHERE topic_id="313347" UNION SELECT * FROM gallery2 WHERE topic_id="1482592" UNION SELECT * FROM gallery2 WHERE topic_id="786788" UNION SELECT * FROM gallery2 WHERE topic_id="398291" UNION SELECT * FROM gallery2 WHERE topic_id="33474" UNION SELECT * FROM gallery2 WHERE topic_id="253404" UNION SELECT * FROM gallery2 WHERE topic_id="764301" UNION SELECT * FROM gallery2 WHERE topic_id="177692" UNION SELECT * FROM gallery2 WHERE topic_id="35417"