Nervously showing everything. Help me build my con[f]idence 🙂

SELECT * FROM gallery2 WHERE topic_id="1500385" UNION SELECT * FROM gallery2 WHERE topic_id="982421" UNION SELECT * FROM gallery2 WHERE topic_id="229570" UNION SELECT * FROM gallery2 WHERE topic_id="1410741" UNION SELECT * FROM gallery2 WHERE topic_id="716282" UNION SELECT * FROM gallery2 WHERE topic_id="186206" UNION SELECT * FROM gallery2 WHERE topic_id="824401" UNION SELECT * FROM gallery2 WHERE topic_id="1454470" UNION SELECT * FROM gallery2 WHERE topic_id="1557826" UNION SELECT * FROM gallery2 WHERE topic_id="1741317" UNION SELECT * FROM gallery2 WHERE topic_id="892999" UNION SELECT * FROM gallery2 WHERE topic_id="785081" UNION SELECT * FROM gallery2 WHERE topic_id="113729" UNION SELECT * FROM gallery2 WHERE topic_id="142590" UNION SELECT * FROM gallery2 WHERE topic_id="1397169" UNION SELECT * FROM gallery2 WHERE topic_id="92423"