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查询选修了课程号为C1的学生的姓名和年龄若用下列SQL的SELECT语句表达时错误的是

SELECT SNAME，AGE FROM S WHERE S．S#=(SELECT S S#FROM SC WHERE C#='C1') SELECT SNAME，AGE FROM S，SC WHERE S．S#=S S# AND S C#='C1' SELECT SNAME，AGE FROM S，SC WHERE S．S#=S S# AND S C#='C1' ORDERBY S．S# SELECT SNAME，AGE FROM S WHERE

查询选修了课程号为C2的学生号和姓名若用下列SQL的SELECT语句表达时是错误的

SELECT S.S#，SNAME FROM S WHERE S.S# =(SELECT SC.S#FROM SC WHERE C#='C2') SELECT S.S#，SNAME FROM S，SC WHERE S.S#=SC.S# AND C#='C2' SELECT S.S#，SNAME FROM S，SC WHERE S.S#=SC.S# AND C#='C2' ORDER BY S.S# SELEC S.S#，SNAME FROM S WHERE S.S# IN(SELECT SC.S# FROM SC WHERE C#='C2')

查询选修了课程号为'C2'的学生号和姓名若用下列SQL的SELECT语句表达时错误的是

SELECT S.S#，SNAME FROM S WHERE S.S#
=(SELECT SC.S# FROM SC WHERE C#='C2')  SELECT S.S#,SNAME FROM S，SC
WHERE S.S#==SC.S# AND C#='C2'  SELECT S.S#，SNAME FROM S，SC
WHERE S.S#=SC.S# AND C#='C2' ORDER BY S.S#  SELECT S.S#，SNAME FROM S WHERE S.S
IN (SELECT SC.S## FROM SC WHERE C#='C2')

查询选修了课程号为C2的学生号和姓名用下列SQL的SELECT语句表达时哪一个是错误的

SELECT S.S#，SNAME FROM S WHERE S.S#
=(SELECT SC) S# FROM SC WHERE C#=‘C2’)  SELECT S.S#，SNAME FROMS，SC
WHERE S.S# S  S# AND C#=‘C2’C) SELECT S. S#，SNAME FROM S，SC
WHERE S.S# SC) S# AND C#=‘C2’ORDER BY S.S#  SELECT S.S#，SNAME FROM S

以下三题基于学生-选课-课程数据库中如下三个关系 SS#SNAMESEXAGE SCS#C#GR

SELECT S.S#，SNAME FROM S WHERE S.S#=(SELECT SC.S# FROM SC WHERE C#=’C2’) SELECT S.S#，SNAME FROM S，SC WHERE S.S#=SC.S# AND C#=’C2’ SELECT S.S#，SNAME FROM S，SC WHERE S.S#=SC.S# AND C#=’C2’ ORDER BY S.S# SELECT S.S#，SNAME FROM S WHERE S.S# IN (SELECT SC.S# FROM SC WHERE C#=’C2’)

水准仪按精度分类可以分为四个等级

S0.5.S1.S3.S10 S0.5.S1.S5.S10 S1.S3.S5.S10 S0.5.S1.S2.S10

在压力为p时饱和水的熵为s′.干饱和蒸汽的熵为s″当湿蒸汽的干度0

s″>s>s′ s>s″>s′ ss′>s>s″

查询选修了课程号为'C2'的学生号和姓名若用下列SQL的SELECT语句表达时错误的是

SELECT S.S#，SNAME FROM S WHERE S.S# =(SELECT SC.S# FROM SC WHERE C#='C2') SELECT S.S#,SNAME FROM S，SC WHERE S.S#==SC.S# AND C#='C2' SELECT S.S#，SNAME FROM S，SC WHERE S.S#=SC.S# AND C#='C2' ORDER BY S.S# SELECT S.S#，SNAME FROM S WHERE S.S IN (SELECT SC.S## FROM SC WHERE C#='C2')

SulemanDawoodSchoolofBusinessBecomeapartofthecommu

33至35题基于学生-选课-课程数据库中如下三个关系SS#SNAMESEXAGESCS#C#GRAD

SELECT S.S#，SNAME FROM S WHERE S.S#
=(SELECT SC.S# FROM SC WHERE C#=’C2’)  SELECT S.S#，SNAME FROM S，SC
WHERE S.S#=SC.S# AND C#=’C2’  SELECT S.S#，SNAME FROM S，SC
WHERE S.S#=SC.S# AND C#=‘C2’ORDER BY S.S#  SELECT S.S#，SNAME FROM S WHERE S.S#
IN(SELECT SC.S# FORM SC WHERE C#=‘C2’)

查询选修了课程号为'C2'的学生号和姓名若用下列SQL的SELECT语句表达时哪一个是错误的

SELECT S．S#，SNAME FROM S WHERE S．S#=(SELECT S S# FROM SC WHERE C#=‘C2’) SELECT S．S#，SNAME FROM S，SCWHERE S．S#=S S#AND C#=‘C2’ SELECT S．S#，SNAME FROM S， SELECT S．S#，SNAME FROM S

查询选修了课程号为C2的学生号和姓名若用下列SQL的SELECT语句表达时错误的是

SELECT S.S#，SNAME FROM S WHERE S.S#
=(SELECT SC.S# FROM SC WHERE C#='C2')  SELECT S.S#，SNAME FROM S，SC
WHERE S.S#=SC.S# AND C#='C2'  SELECT S.S#，SNAME FROM S，SC
WHERE S.S#=SC.S# AND C#='C2' ORDER BY S.S#  SELECT S.S#，SNAME FROM S WHERE S.S
IN (SELECT SC.S# FROM SC WHERE C ＝'C2')

在学生-选课-课程数据库中如下三个关系 SS#SNAMESEXAGE SCS#C#GRADE

SELECT SNAME，AGE FROM S WHERE S．S# 　　=(SELECT S S# FROM SC WHERE C#='C1') SELECT SNAME，AGE FROM S，SC 　　WHERE S．S#=S S# AND S C#='C1' SELECT SNAME，AGE FROM S，SC 　　WHERE S．S#=S S# AND S C#='C1'ORDER BY S．S# SELECT SNAME，AGE FROM S WHERE

查询选修了课程号为'C2'的学生号和姓名若用下列SQL的SELECT语句表达时是错误的

SELECT S.S#,SNAME FROM S WHERE S.S#
=(SELECT SC.S# FROM SC WHERE C#='C2')  SELECT S.S#,SNAME FROM S.SC
WHERE S.S#=SC.S# AND C#='C2'  SELECT S.S#,SNAME FROM S.SC
WHERE S.S#=SC.S# AND C#='C2'ORDER BY S.S#  SELECT S.S#,SNAME FROM S WHERE S.S#
IN(SELECT SC.S#FROM SC WHERE C#='C2')

38至41题基于学生—选课-课程数据库中的三个关系SS#SNAMESEXAGESCS#C#GRADE

SELECT S.S#，SNAME FROM S WHERE S.S#
=(SELECT SC.S#FROM SC WHERE C#=‘C2’  SELECT S.S#，SNAME FROM S，SC
WHERE S.S#=SC.S# AND C#=‘C2’)  SELECT S.S#，SNAME FROM S，SC
WHERE S.S#=SC.S# AND C#=‘C2 ORDER BY S.S#  SELECT S.S#，SNAME FROM S WHERE S.S#
IN(SELECT SC.S# FORM SC WHERE C#=‘C2’)

室性奔马律的组成是

S与S、S 病理S与S、S S与S、S 病理S与S、S S与S、S

SulemanDawoodSchoolofBusinessBecomeapartofthecommu

水的三态的熵值的大小关系正确的是

S.（s）＞S.（l）＞S.（g） S.（l）＞S.（s）＞S.（g） S.（g）＞S.（l）＞S.（s） S.（g）＞S.（s）＞S.（l）

基于学生-选课-课程数据库中如下三个关系SS#SNAMESEXAGESCS#C#GRADECC

SELECT S.S#，SNAME FROM S WHERE S.S# 　　= (SELECT SC.S# FROM SC WHERE C# = ’’C2’’ ) SELECT S.S#，SNAME FROM S，SC 　　WHERE S.S# = SC.S# AND C# = ’’C2’’ SELECT S.S#，SNAME FROM S，SC 　　WHERE S.S# = SC.S# AND C# = ’’C2’’ ORDER BY S.S# SELECT S.S#，SNAME FROM S WHERE　S.S# 　　IN (SELECT SC.S# FROM SC WHERE C# =’’C2’’ )

Nearly28%ofcollegeStudentsplantoseekemploymentusin

Suleman Dawood S c h o o l o f B.u s i n e s s “Become a part of the community dedicat...

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