CREATE TABLE table_49549 ("Volume:Issue" CLOB, "Issue date ( s ) " CLOB, "Weeks at number one" FLOAT, "Song" CLOB, "Artist ( s ) " CLOB)

Which Weeks at number one has a Volume:Issue of 61:22-23?
SELECT MAX("Weeks at number one") FROM table_49549 WHERE "Volume:Issue" = '61:22-23'
SELECT MAX("Weeks at number one") FROM "table_49549" WHERE "Volume:Issue" = '61:22-23'