CREATE TABLE table_45577 ("Nat." CLOB, "Name" CLOB, "Moving from" CLOB, "Type" CLOB, "Transfer window" CLOB, "Ends" FLOAT, "Transfer fee" CLOB)

Which transfer window ends after 2006?
SELECT "Transfer window" FROM table_45577 WHERE "Ends" > '2006'
SELECT "Transfer window" FROM "table_45577" WHERE "Ends" > '2006'