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（ 6 ） SELECT * FROM student 【 6 】 FILE student 命令将查询结果存储在 student . txt 文本文件中。
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更多 “ （ 6 ） SELECT * FROM student 【 6 】 FILE student 命令将查询结果存储在 student . txt 文本文件中。 ” 相关考题
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（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 student.sno =sc.sno and sc.cno=course.cnoD） SELECT sname ,cno,grade FROM student,sc WHERE student.sno =sc.sno
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使用SQL语句从表STUDENT中查询所有姓王的同学的信息，正确的命令是：A）SELECT*FROM STUDENT WHERE LEFT（姓名，2）＝“王”B）SELECT*FROM STUDENT WHERE RIGHT（姓名，2）＝“王”C）SELECT*FROM STUDENT WHERE TRIM（姓名，2）＝“王”D）SELECT*FROM STUDENT WHERE STR(姓名，2)=“王”
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对于学生信息表：student(sno，sname，sex，age，dept)，能够得到年龄在20岁到22岁之间的学生的姓名和学号的语句是A．SELECT * FROM student WHERE age BETWEEN 20 AND 22B．SELECT sname，sno FROM student WHERE age BETWEEN 20 AND 22C．SELECT sname，sno FROM student WHERE age＞=20D．SELECT sname，sno FROM student WHERE age＜=22
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The STUDENT_GRADES table has these columns:STUDENT_ID NUMBER(12)SEMESTER_END DATEGPA NUMBER(4,3)The registrar requested a report listing the students‘ grade point averages (GPA) sorted from highest grade point average to lowest.Which statement produces a report that displays the student ID and GPA in the sorted order requested by the registrar? （）A. SELECT student_id, gpa FROM student_grades ORDER BY gpa ASC;B. SELECT student_id, gpa FROM student_grades SORT ORDER BY gpa ASC;C. SELECT student_id, gpa FROM student_grades SORT ORDER BY gpa;D. SELECT student_id, gpa FROM student_grades ORDER BY gpa;E. SELECT student_id, gpa FROM student_grades SORT ORDER BY gpa DESC;F. SELECT student_id, gpa FROM student_grades ORDER BY gpa DESC;
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根据SQL标准，要查询表student中平均年龄age小于21的所在系dept及其平均年龄值，下面哪条语句适用?()A select dept,avg(age) from student where avg(age)B select dept,avg(age) from student group by dept having avg(age)C select dept,avg(age) from student having avg(age)D select dept,avg(age) from student group by dept where avg(age)
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根据SQL标准，下面哪条语句与select min(age) from student等效?()A select age from student where age >= min(age)B select distinct age from student where age >= all min(age)C select distinct a.age from student a where a.ageD select distinct a.age from student a where a.age
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根据SQL标准，要查询表student中所有年龄age小于所有学生的平均年龄的记录，下面哪条语句适用?()A select * from student where ageB select * from student having ageC select * from student a where a.ageD select * from student a where (select avg(b.age) from student b ) >= a.age
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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.sno and sc.cno=course,cnoD．SELECT sname,cno,grade FROM student,sc WHERE student.sno=sc.sno
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查询所修课程成绩都大于等于85分的学生的学号和姓名，正确的命令是( )。A.SELECT学号，姓名FROM student s WHERE NOT EXISTS (SELECT*FROM score se WHERE SC．学号=s．学号码AND成绩85) from= student= s= where= not= exists= score= sc==85)C.SELECT学号，姓名FROM student s，score sc WHERE s．学号=sc．学号AND成绩=85D.SELECT学号，姓名FROM student s，score sc WHERE S．学号=sc．学号AND ALL成绩=85
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对于数据表：student(sno,sname,sex,age,grade)，查询学习成绩为空的学生的学号和姓名，下面语句正确的是______。A．SELECT sno,sname FROM student WHERE gade=NULLB．SELECT sno,sname FROM student WHERE grade IS NULLC．SELECT sno,age FROM student WHERE grade IS NULLD．SELECT mo,age FROM student WHERE grade=NULL
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使用SQL语句从表STUDENT中查询所有姓王的同学的信息，正确的命令是：______。A．SELECT*FROM STUDENT WHERE LEFT(姓名，2)=“王”B．SELECT*FROM STUDENT WHERE RIGHT(姓名，2)=“王”C．SELECT*FROM STUDENT WHERE TRIM(姓名，2)=“王”D．SELECT*FROM STUDENT WHERE STR(姓名，2)=“王”
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对于学生信息表：student(sno，sname，sex，age，dept)，要查询所有刘姓学生的信息，正确的语句是A．SELECT * FROM student WHERE sname LIKE'刘 * 'B．SELECT * FROM student WHERE sname LIKE'刘 $'C．SELECT * FROM student WHERE sname LIKE'刘%'D．SELECT * FROM student WHERE sname LIKE'刘'
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已知有关系“STUDENT”，则关系运算σANE＜80(STUDENT)用SQL语句表示为(52)。A．SELECT( * )FROM STUDENT WHERE AVE ＜ 80B．SELECT( * )FROM STUDENT HAVING AVE ＜ 80C．SELECT(AVE)FROM STUDENT WHERE AVE ＜ 80D．SELECT(AVE） FROM STUDENT HAVING AVE ＜ 80
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The STUDENT_GRADES table has these columns: STUDENT_ID NUMBER(12) SEMESTER_END DATE GPA NUMBER(4,3) The registrar requested a report listing the students' grade point averages (GPA) sorted from highest grade point average to lowest. Which statement produces a report that displays the student ID and GPA in the sorted order requested by the registrar? （）A、SELECT student_id, gpa FROM student_grades ORDER BY gpa ASC;B、SELECT student_id, gpa FROM student_grades SORT ORDER BY gpa ASC;C、SELECT student_id, gpa FROM student_grades SORT ORDER BY gpa;D、SELECT student_id, gpa FROM student_grades ORDER BY gpa;E、SELECT student_id, gpa FROM student_grades SORT ORDER BY gpa DESC;F、SELECT student_id, gpa FROM student_grades ORDER BY gpa DESC;
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查询student表中的所有非空email信息，以下语句正确的是（）。A、Select email from student where email !=nullB、Select email from student where email not is nullC、Select email from student where email nullD、Select email from student where email is not null
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下列查询年龄最大的前四个学生（包括并列的情况）的语句，正确的是（）。A、SELECT TOP 4 WITH TIES * FROM Student ORDER BY Sage ASCB、SELECT TOP 4 WITH TIES * FROM Student GROUP BY Sage ASCC、SELECT TOP 4 WITH TIES * FROM Student ORDER BY Sage DESCD、SELECT TOP 4 WITH TIES * FROM Student GROUP BY Sage DESC
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数据库中有一张表名称为Student，有列Number，Name，Age，IDCard，Sex。主键为Number。要求查询所有男同学信息，下列哪个SQL语句是正确的？（）A、Select* From Student Where Sex=’男’B、Select* From Student Where Number NotIn（Select Number From Student Where Sex=’男’）C、Select* From Student Where NumberIn（Select Numbe rFrom Student Where Sex=’男’）D、Select* From Student Where Sex’男’
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数据库中有一张表名称为Student，有列Name，Age，IDCard，Sex。要求写SQL语句查询出表中年龄介于20和30岁之间的数据，下列哪个SQL语句是正确的？（）A、Select* From Student Where Age=20 ANDAge=30B、Select* From Student Where Age=20 ANDAge=30C、Select* From Student Where Age BET WENN 20AND30D、Select* From Student Where Age=20Age=30"
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查找student表中所有电话号码（列名：telephone）的第一位为8或6，第三位为0的电话号码（）。A、SELECT telephone FROM student WHERE telephoneLIKE’[8，6]%0*’B、SELECT telephone FROM student WHERE telephoneLIKE’（8，6）*0%’C、SELECT telephone FROM student WHERE telephoneLIKE’[8，6]_0%’D、SELECT telephone FROM student WHERE telephoneLIKE’[8，6]_0*’
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查询student表中的所有非空email信息，以下语句正确的是（）A、Select email from student where email!=nullB、Select email from student where emailnotisnullC、Select email from student where emailnullD、Select email from student where emailisnotnull
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在Transact-SQL语法中，以下SELECT语句正确的是（）。A、SELECT * FROM studentB、SELECT * FROM student WHERE GETDATE（）C、SELECT * FROM student ORDER st_idD、SELECT * FROM student BY St_name
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The STUDENT_GRADES table has these columns: STUDENT_ID NUMBER(12) SEMESTER_END DATE GPA NUMBER(4,3) Which statement finds the highest grade point average (GPA) per semester?（）A、SELECT MAX (gpa) FROM student _ grades WHERE gpa IS NOT NULL;B、SELECT (gpa) FROM student _ grades GROUP BY semester_end WHERE gpa IS NOT NULL;C、SELECT MAX (gpa) FROM student _ grades WHERE gpa IS NOT NULL GROUP BY semester_end;D、SELECT MAX (gpa) GROUP BY semester_end WHERE gpa IS NOT NULL FROM student _ grades;E、SELECT MAX (gpa) FROM student _ grades GROUP BY semester_end WHERE gpa IS NOT NULL;
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The STUDENT_GRADES table has these columns: STUDENT_ID NUMBER(12) SEMESTER_END DATE GPA NUMBER(4,3) The register has requested a report listing the students' grade point averages (GPA), sorted from highest grade point average to lowest within each semester, starting from the earliest date. Which statement accomplishes this?（）A、SELECT student_id, semester_end, gpa FROM student_grades ORDER BY semester_end DESC, gpa DESC;B、SELECT student_id, semester_end, gpa FROM student_grades ORDER BY semester _end, ASC,gpa ASC;C、SELECT student_id, semester_end, gpa FROM student_grades ORDER BY semester _end, gpa DESC;D、SELECT student_id, semester_end, gpa FROM student_grades ORDER BY gpa DESC,semester_end DESC;E、SELECT student_id, semester_end, gpa FROM student_grades
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查询名字中第2个字为“阳”的学生的姓名和学号，正确的是（）A、Select Sname，Sno from student where Sname like‘_阳%’；B、Select Sname，Sno from student where Sname like‘阳%’；C、Select Sname，Sno from student where Sname like‘_阳’；D、Select Sname，Sno from student where Sname like‘阳_%’；
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多选题数据库中有一张表名称为Student，有列Number，Name，Age，IDCard，Sex。主键为Number。要求查询所有男同学信息，下列哪个SQL语句是正确的？（）ASelect* From Student Where Sex=’男’BSelect* From Student Where Number NotIn（Select Number From Student Where Sex=’男’）CSelect* From Student Where NumberIn（Select Numbe rFrom Student Where Sex=’男’）DSelect* From Student Where Sex’男’
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