approach

SELECT * FROM gallery2 WHERE topic_id="1527198" UNION SELECT * FROM gallery2 WHERE topic_id="923008" UNION SELECT * FROM gallery2 WHERE topic_id="150257" UNION SELECT * FROM gallery2 WHERE topic_id="416045" UNION SELECT * FROM gallery2 WHERE topic_id="442879" UNION SELECT * FROM gallery2 WHERE topic_id="840400" UNION SELECT * FROM gallery2 WHERE topic_id="997072" UNION SELECT * FROM gallery2 WHERE topic_id="831784" UNION SELECT * FROM gallery2 WHERE topic_id="485427" UNION SELECT * FROM gallery2 WHERE topic_id="1296464" UNION SELECT * FROM gallery2 WHERE topic_id="675979" UNION SELECT * FROM gallery2 WHERE topic_id="604200" UNION SELECT * FROM gallery2 WHERE topic_id="867245" UNION SELECT * FROM gallery2 WHERE topic_id="924198" UNION SELECT * FROM gallery2 WHERE topic_id="372355" UNION SELECT * FROM gallery2 WHERE topic_id="1749515"