SELECT*FROM student【 】FILE student命令将查询结果存储在student.txt文本文件中。
SELECT*FROM student【 】FILE student命令将查询结果存储在student.txt文本文件中。
相关考题：
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”
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)B.SELECT学号，姓名FROM student S WHERE NOT EXISTS (SELECT*FROM score sc WHERE SC．学号=s．学号码AND成绩=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
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;
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)
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
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
查询“工资表”的全部记录并存储于文本文件one中的正确SQL命令是（ ）。A.SELECT*FROM工资表INTO FILE oneB.SELECT*FROM工资表TO FILIE oneC.SELECT*FROM工资表INTO CURSOR oneD.SELECT*FROM工资表TO CURSOR one
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
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
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
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”
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'
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
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;
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
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
若要检索“Student”数据表中的所有记录和字段，则SQL语句为（）A、Selec t姓名，性别 From StudentB、Select*From StudentC、Select 姓名，性别 From Student Where 姓名=“张山“D、Select*From Student Where 姓名=“张山“
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’
使用SQL命令从表STUDENT中查询所有姓王的同学的信息，正确的命令是：SELECT*FROM STUDENT（）A、WHERE TRIM（姓名，2）="王"B、WHERE SUBSTR（姓名，2）="王"C、WHERE LEFT（姓名，2）="王"D、WHERE RIGHT（姓名，2）="王"
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"
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
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
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_%’；
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’
查询student数据库中grade表中学生姓名st_name含有“国”的全部学生情况，可用什么命令？ (1.0分) [单选.] A. select * from grade where st_name like ‘国’; B. select * from student where st_name like ‘国’; C. select * from grade where st_name= ‘国’; D. select * from grade where st_name like ‘%国%’;