Making custom captions

SELECT * FROM gallery2 WHERE topic_id="1042686" UNION SELECT * FROM gallery2 WHERE topic_id="242215" UNION SELECT * FROM gallery2 WHERE topic_id="1186897" UNION SELECT * FROM gallery2 WHERE topic_id="106644" UNION SELECT * FROM gallery2 WHERE topic_id="1092208" UNION SELECT * FROM gallery2 WHERE topic_id="1805272" UNION SELECT * FROM gallery2 WHERE topic_id="1081278" UNION SELECT * FROM gallery2 WHERE topic_id="433306" UNION SELECT * FROM gallery2 WHERE topic_id="974520" UNION SELECT * FROM gallery2 WHERE topic_id="245158" UNION SELECT * FROM gallery2 WHERE topic_id="674219" UNION SELECT * FROM gallery2 WHERE topic_id="78097" UNION SELECT * FROM gallery2 WHERE topic_id="1323782" UNION SELECT * FROM gallery2 WHERE topic_id="1340377" UNION SELECT * FROM gallery2 WHERE topic_id="1639226" UNION SELECT * FROM gallery2 WHERE topic_id="1083626"