CREATE TABLE table_17679 ("Character" TEXT, "Portrayed by" TEXT, "Main cast seasons" TEXT, "Recurring cast seasons" TEXT, "# of episodes" FLOAT)

What seasons does Kevin Jonas appear?
SELECT "Main cast seasons" FROM table_17679 WHERE "Portrayed by" = 'Kevin Jonas'
SELECT "Main cast seasons" FROM "table_17679" WHERE "Portrayed by" = 'Kevin Jonas'