CREATE TABLE table_31328 ("Episode" FLOAT, "Date" CLOB, "Official rating 4+" CLOB, "Share 4+" CLOB, "Official rating 16-39" CLOB, "Share 16-39" CLOB)

Which episode had a share 16-19 of 23,22%?
SELECT MAX("Episode") FROM table_31328 WHERE "Share 16-39" = '23,22%'
SELECT MAX("Episode") FROM "table_31328" WHERE "Share 16-39" = '23,22%'