检索选修“C2”课程的学生中成绩最高的学生的学号。正确的SELECT语句是（ ）。
A: SELECT s
B: FROM sc WHERE c
C: =’C2’ AND grade＞＝(SELECT grade FROM sc WHERE c
D: =’C2’);
E: SELECT s
F: FROM sc WHERE c
G: =’C2’ AND grade IN(SELECT grade FROM sc WHERE c
H: =’C2’);
I: SELECT s
J: FROM sc WHERE c
K: =’C2’ AND grade NOT IN(SELECT grade FORM sc WHERE c
L: =’C2’);
M: SELECT s
N: FROM sc WHERE c
O: =’C2’ AND grade＞＝(SELECT max(grade) FROM sc WHERE c
P: =’C2’);
A: SELECT s
B: FROM sc WHERE c
C: =’C2’ AND grade＞＝(SELECT grade FROM sc WHERE c
D: =’C2’);
E: SELECT s
F: FROM sc WHERE c
G: =’C2’ AND grade IN(SELECT grade FROM sc WHERE c
H: =’C2’);
I: SELECT s
J: FROM sc WHERE c
K: =’C2’ AND grade NOT IN(SELECT grade FORM sc WHERE c
L: =’C2’);
M: SELECT s
N: FROM sc WHERE c
O: =’C2’ AND grade＞＝(SELECT max(grade) FROM sc WHERE c
P: =’C2’);
举一反三
- 检索选修课程‘C2’的学生中成绩最高的学生的学号。正确的select语句为（ ）。 A: select S B: from sc where C C: =‘C2’and grade>= (select grade from sc where C D: =‘C2’) E: select S F: from sc where C G: =‘C2’and grade in (select grade from sc where C H: =‘C2’) I: select S J: from sc where C K: =‘C2’and grade not in (select grade from sc where C L: =‘C2’) M: select S N: from sc where C O: =‘C2’and grade>=all (select grade from sc where C P: =‘C2’)
- 假设有三个基本表：学生表S、课程表C、学生选课表SC，它们的结构如下：S（S#，SN，SEX，AGE，DEPT） C（C#，CN） SC（S#，C#，GRADE）检索选修课程”C2”的学生中成绩最高的学生的学号。正确的SELECT语句是（ ）。 A: SELECT S B: FROM SC WHERE C C: =”C2” AND GRADE>=(SELECT GRADE FROM SC WHERE C D: = “C2”) E: SELECT S F: FROM SC WHERE C G: =”C2” AND GRADE IN (SELECT GRADE FROM SC WHERE C H: = “C2”) I: SELECT S J: FROM SC WHERE C K: =”C2” AND GRADE NOT IN (SELECT GRADE FROM SC WHERE C L: = “C2”) M: SELECT S N: FROM SC WHERE C O: =”C2” AND GRADE>=ALL (SELECT GRADE FROM SC WHERE C P: = “C2”)
- 检索选修课程“C2”的学生中成绩最高的学生的学号。正确的SELECT语句是（）。 A: SELECT SNO FROM SC WHERE CNO='C2' AND GRADE >= ( SELECT GRADE FORM SC WHERE CNO='C2' ); B: SELECT SNO FROM SC WHERE CNO='C2' AND GRADE IN ( SELECT GRADE FORM SC WHERE CNO='C2' ); C: SELECT SNO FROM SC WHERE CNO='C2' AND GRADE NOT IN ( SELECT GRADE FORM SC WHERE CNO='C2' ); D: SELECT SNO FROM SC WHERE CNO='C2' AND GRADE >= ALL ( SELECT GRADE FORM SC WHERE CNO='C2' );
- 检索选修课程“C2”的学生中成绩最高的学生的学号。正确的SELECT语句是( )。 A: SELECT S B: FORM SC WHERE C C: ='C2' AND GRAD>=<br>(SELECT GRADE FORM SC<br>WHERE C D: ='C2') E: SELECT S F: FORM SC<br>WHERE C G: ='C2' AND GRADE IN<br>(SELECT GRADE FORM SC<br>WHERE C H: ='C2') I: SELECT S J: FORM SC<br>WHERE C K: ='C2' AND GRADE NOT IN<br>(SELECT GRADE FORM SC<br>WHERE C L: ='C2') M: SELECT S N: FORM SC<br>WHERE C O: ='C2' AND GRADE>=ALL<br>(SELECT GRADE FORM SC<br>WHERE C P: ='C2')
- 检索选修课程"C2”的学生中成绩最高的学生的学号，正确的SELECT语句是______。 A: SELECT S# FORM SC WHERE C#="C2"AND GRADE＞=(SELECT GRADE FORM SC WHERE C#="C2") B: SELECT S# FORM SC WHERE C#="C2"AND GRADE IN(SELECT GRADE FORM SC) WHERE C#="C2" C: SELECT S# FORM SC WHERE C#="C2"AND GRADE NOT IN(SELECT GRADE FORM SC WHERE C#="C2") D: SELECT S# FORM SC WHERE C#="C2"AND GRADE＞=ALL(SELECT GRADE FORM SC WHERE C#="C2")