设有表:order(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
A) SELECT * FROM order WHERE YEAR(签订日期)=2007 ORDER BY 金额 DESC
B) SELECT * FROM order WHILE YEAR(签订日期)=2007 ORDER BY 金额 ASC
C) SELECT * FROM order WHERE YEAR(签订日期)=2007 ORDER BY 金额 ASC
D) SELECT * FROM order WHILE YEAR(签订日期)=2007 ORDER BY 金额 DESC