144.SQL语言具有两种使用方式,分别称为交互式SQL和(c )
A.提示式SQL B.多用户SQL C.嵌入式SQL D.解释式SQL
145.检索所有比"王华"年龄大的学生姓名、年龄和性别。正确的SELECT语句是(a )
A.SELECT SN,AGE,SEX FROM S
SHERE AGE> (SELECT AGE FROM S)
WHERE SN=’王华’)
B.SELECT SN,AGE,SEX
FROM S
WHERE SN=’王华’
C.SELECT SN,ACE,SEX FROM S
WHERE AGE>(SELECT ACE
WHERE SN=’王华’)
D.SELECT SN,ACE,SEX FROM S
WHERE ACE>王华 AGE
146.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(d )
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 CRADE 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 CRANDE> =ALL(SELECT GRADE FORM SC
WHERE C#="C2")
147.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( c)
A.SELECT S.SN,SC.C#,SC.CRADE
FROMS
WHERE S.S#=SC.S#
B.SELCECT S.SN,SC.C#,SC.GRADE
FROM SC
WHERE S.S#=SC.CRADE
C.SELECT S.SN,SC.C#,SC.CRADE
FROM S,SC
WHERE S.S#:SC.S#
D.SELSECT S.SN,SC.C#,SC.GRADE
FROM S,SC
148.检索选修四门以上课程的学生总成绩(不统计不及格的课程),并要求按总成绩的降序捧列出来。正确的SElECT语句是( b)
A.SELECT S#,SUM(GRADE)FROM SC
WHERE GRADE>=60
CROUP BY S#
ORDER BY 2 DESC
HAVING COUNT(*)>=4
B.SELECT S#,SUM(GRADE)FROM SC
WHERE GRADE>=60
GROUP BY S#
HAVING COUNT(*)>=4
ORDER BY 2 DESC
C.SELECT S#,SUM(GRADE)FROM SC
WHERE GRADE>=60
HAVINC COUNT(*)>=4
GROUP BY S#
ORDER BY 2 DESC
D.DELECT S#,SUM(GRADE)FROM SC
WHERE GRADE>=60
ORDER BY 2 DESC
CROUP BY S#
HAVINC COUNT(*)>=4
149.若用如下的SQL语句创建一个student表:
CREATE TABLE student NO C(4)NOT NULL,
NAME C(8)NOT NULL,
SEX C(2),
AGE N(2)
可以插入到student表中的是(b )
A.(’1031’,’曾华’,男,23) B.(’1031’,’曾华’,NULL,NULL)
C.(NULL,’曾华’,’男’,’23’) D.(’1031’,NULL,’男’,23)
150.SQL语言是(b )的语言,易学习。
A.过程化 B.非过程化 C.格式化 D.导航式
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