检索学生姓名及其所选修课程的课程号和成绩，正确的SELECT语句是______。

A．SELECT S.SN,SC.C#,SC.GRADE FROMS WHERE S.S#=SC.S#

B．SELCECT S.SN,SC.C#,SC.GRADE FROM SC WHERE S.S#=SC.GRADE

C．SELECT S.SN,SC.C#,SC,GRADE FROM S,SC WHERE S.S#：SC.S#

D．SELSECT S.SN,SC.C#,SC.GRADE FROM S,SC

[单选题]检索学生姓名及其所选修课程的课程号和成绩。正确的SELECT语句是______。A．SELECT S.SN,SC.C#,SC.GRADE FROM S WHERE S.S#=SC.S#B．SELECT S.SN,SC.C#,SC.GRADE FROM SC WHERE S.S#=SC.GRADEC．SELECT S.SN, SC.C#,SC.GRADE FROM S,SC WHERE S.S#=SC.S#D．SELECT S.SN,SC.C#,SC.GRADE FROM S,SC

[单选题]查询学生姓名及其所选修课程的课程号和成绩，正确的SQL语句是A．SELECT S.SNAME，SC.C#，GRADE FROM S WHERE S.S#=SC.S#B．SELECT S.SNAME，SC.C#，GRADE FROM SC WHERE S.S#=SC.S#C．SELECT S.SNAME，SC.C#，GRADE FROM S，SC WHERE S.S#=SC.S#D．SELECT S.SNAME，SC.C#，GRADE FROM S，SC WHERE S.S#=SC.C#

[单选题]查找学生姓名及其所选修课程的课程号和成绩,正确的SQL语句是A．SELECT sname FROM student,SELECT cno,grade FROM sc WHERE student.sno=sc.snoB．SELECT sname,cno,grade FROM student,course WHERE student.sno=course.cnoC．SELECT sname,cname,grade FROM student,course,sc WHERE student.sno=sc

[单选题]（ 3 2 ）查询学生姓名及其所选修课程的课程号和成绩，正确的 SQL 语句是A． ） SELECT S . SNAME , SC.C# , GRADE FROM S WHERE S . S # ＝ SC . S#B． ） SELECT S . SNAME , SC.C #, GRADE FROM SC WHERE S . S # = ＝ SC . S#C． ） SELECT S . SNAME , SC.C# , GRADE FROM S , SC WHERE S . S# ＝ SC . S#

[单选题]（40）查找学生姓名及其所选修课程号和成绩，正确的 SQL 语句是A．）SELECT sname FROM student, SELECT cno,grade FROM sc WHERE student.sno =sc.snoB．） FROM sname,cno,grade FROM student,course WHERE student.sno =course.cnoC．） SELECT sname ,canme,grade FROM student,course,sc WHERE stud

[单选题]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的语句是______。A．SELECT S# FROM SC WHERE C#="C2" AND GRADE＞ =(SELECT GRADE FROM SC WHERE C#="C2")B．SELECT S# FROM SC WHERE C#="C2" AND GRADE IN(SELECT GRADE FROM SC WHERE C#="C2")C．SELECT S# FROM SC WHERE C#="C2

[单选题]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#="

[单选题]检索“至少选修课程号为′C1′的学生姓名(SNAME) ”的SQL语句是A．SELECT s.sname FROM s,sc WHERE c.cno=′C1′B．SELECT s.sname FROM s,sc WHERE c.cno=′C1′AND s.sno=sc.snoC．SELECT s.sname FROM s,sc FOR c.cno=′C1′D．SELECT s.sname FROM s,sc FOR c.cno=′C1′AND s.sno=sc.sno

[单选题]设有学生选课表SC(学号,课程号,成绩)，用SQL检索同时选修课程号为“C1”和“C5”的学生的学号的正确命令是______。A．SELECT 学号 FROM SC WHERE 课程号='C1' AND 课程号='C5'B．SELECT 学号 FROM SC WHERE 课程号='C1' AND 课程号=(SELECT 课程号 FROM SC WHERE 课程号='C5')C．SELECT 学号 FROM SC WHERE 课程号='C1' AND 学号=(SELECT 学号

[单选题]检索“至少选修课程号为/'C1/'，的学生姓名(SNAME)”的SQL语句是（ ）。A．SELECT S.sname FROM S，SC WHERE C．cno='C1'B．SELECT S.sname FROM S，SC WHERE C．cno='C1'AND S.sno=SC．snoC．SELECT S.sname FROM S，SC FOR C．cno='C1'D．SELECT S.sname FROM S，sc FOR C．cno='C1' AND S.sno=SC．