关于VFP9.0成绩排名的问题
有关排名(名次)
Create Cursor T1 (学号 I,姓名 C(10),分数 N(10,2))
Insert Into T1 Values (1,"学生1",900)
Insert Into T1 Values (2,"学生2",360)
Insert Into T1 Values (3,"学生3",800)
Insert Into T1 Values (4,"学生4",630)
Insert Into T1 Values (5,"学生5",240)
Insert Into T1 Values (6,"学生6",90)
Insert Into T1 Values (7,"学生7",240)
Insert Into T1 Values (8,"学生8",900)
Insert Into T1 Values (9,"学生9",480)
Insert Into T1 Values (10,"学生10",108)
Browse
*--VFP9.0(子查询)
Select A.*,(Select Count(*) From T1 B Where A.分数<=B.分数) As 名次 From T1 A Order By 名次
请问这个A.* 的A表是从哪来的,看不懂,但实际操作是成功的