A.
CREATE VIEW SalaryView (系名,工资总额) AS SELECT 所在系, COUNT( 工资 ) FROM 教师表 GROUP BY 所在系
B.
CREATE VIEW SalaryView (系名,工资总额) AS SELECT 所在系, SUM( 工资 ) FROM 教师表 GROUP BY 所在系
C.
CREATE VIEW SalaryView AS
D.
CREATE VIEW SalaryView AS SELECT 所在系, SUM( 工资 ) FROM 教师表 GROUP BY 所在系