CREATE TABLE table_31097 ("Stage" FLOAT, "Winner" TEXT, "General Classification" TEXT, "Mountains Classification" TEXT, "Sprint Classification" TEXT, "Young Rider Classification" TEXT, "Team Classification" TEXT, "Aggressive Rider" TEXT)

Thomas de Gendt performed on what stage as aggressive rider?
SELECT MAX("Stage") FROM table_31097 WHERE "Aggressive Rider" = 'Thomas De Gendt'
SELECT MAX("Stage") FROM "table_31097" WHERE "Aggressive Rider" = 'Thomas De Gendt'