设有订单表order(其中包括字段:订单号,客户号,职员号,签订日期,金额),查询2007年所签订单的信息,并按金额降序排序,正确的SQL命令是()
- ASELECT*FROMorderWHEREYEAR(签订日期)=2007ORDERBY金额DESC
- BSELECT*FROMorderWHILEYEAR(签订日期)=2007ORDERBY金额ASC
- CSELECT*FROMorderWHEREYEAR(签订日期)=2007ORDERBY金额ASC
- DSELECT*FROMorderWHILEYEAR(签订日期)=2007ORDERBY金额DESC