A.SELECT * FROM student B.SELECT * FROM student WHERE GETDATE() C.SELECT * FROM student ORDER st_id D.SELECT * FROM student BY St_name
A.TOP 15 B.15 C.TOP<15 D.FIRST 15
A.內部聯(lián)接 B.全外部聯(lián)接 C.左外部聯(lián)接 D.右外部聯(lián)接