数据类型转换的类是（）。 A: AMod B: BConvert C: CConst D: DSingle

For which two actions can you use the TO_DATE function? （） A: Aconvert any date literal to a date B: Bconvert any numeric literal to a date C: Cconvert any date to a character literal D: Dformat 'January 10 1999' for input E: Eformat '10-JAN-99' to 'January 10 1999'