Are these too small?

SELECT * FROM gallery2 WHERE topic_id="411049" UNION SELECT * FROM gallery2 WHERE topic_id="336000" UNION SELECT * FROM gallery2 WHERE topic_id="924146" UNION SELECT * FROM gallery2 WHERE topic_id="693880" UNION SELECT * FROM gallery2 WHERE topic_id="1175506" UNION SELECT * FROM gallery2 WHERE topic_id="1817989" UNION SELECT * FROM gallery2 WHERE topic_id="234845" UNION SELECT * FROM gallery2 WHERE topic_id="453458" UNION SELECT * FROM gallery2 WHERE topic_id="715153" UNION SELECT * FROM gallery2 WHERE topic_id="1581870" UNION SELECT * FROM gallery2 WHERE topic_id="1558981" UNION SELECT * FROM gallery2 WHERE topic_id="880757" UNION SELECT * FROM gallery2 WHERE topic_id="1027471" UNION SELECT * FROM gallery2 WHERE topic_id="342692" UNION SELECT * FROM gallery2 WHERE topic_id="431423" UNION SELECT * FROM gallery2 WHERE topic_id="333100"