Left or right

SELECT * FROM gallery2 WHERE topic_id="717824" UNION SELECT * FROM gallery2 WHERE topic_id="1761872" UNION SELECT * FROM gallery2 WHERE topic_id="1081004" UNION SELECT * FROM gallery2 WHERE topic_id="1288429" UNION SELECT * FROM gallery2 WHERE topic_id="1399023" UNION SELECT * FROM gallery2 WHERE topic_id="1498700" UNION SELECT * FROM gallery2 WHERE topic_id="1095484" UNION SELECT * FROM gallery2 WHERE topic_id="1752173" UNION SELECT * FROM gallery2 WHERE topic_id="1449838" UNION SELECT * FROM gallery2 WHERE topic_id="1336070" UNION SELECT * FROM gallery2 WHERE topic_id="798403" UNION SELECT * FROM gallery2 WHERE topic_id="1290323" UNION SELECT * FROM gallery2 WHERE topic_id="548498" UNION SELECT * FROM gallery2 WHERE topic_id="1754711" UNION SELECT * FROM gallery2 WHERE topic_id="233953" UNION SELECT * FROM gallery2 WHERE topic_id="409821"