• 2022-06-06 问题

    检索所有姓“张”、姓“田”的学生信息,可以使用的SQL语句有______。 A: SELECT * FROM student WHERE student_name LIKE( '张%' OR '田%'); B: SELECT * FROM student WHERE SUBSTRING(student_name,1,1) in ('张','田'); C: SELECT * FROM student WHERE SUBSTRING(student_name,1,1)= '张' OR SUBSTRING(student_name,1,1)='田'; D: SELECT * FROM student WHERE student_name LIKE '张%' OR student_name LIKE '田%';

    检索所有姓“张”、姓“田”的学生信息,可以使用的SQL语句有______。 A: SELECT * FROM student WHERE student_name LIKE( '张%' OR '田%'); B: SELECT * FROM student WHERE SUBSTRING(student_name,1,1) in ('张','田'); C: SELECT * FROM student WHERE SUBSTRING(student_name,1,1)= '张' OR SUBSTRING(student_name,1,1)='田'; D: SELECT * FROM student WHERE student_name LIKE '张%' OR student_name LIKE '田%';

  • 2022-06-06 问题

    检索所有姓“张”、姓“田”的学生信息,可以使用的SQL语句有()。 A: SELECT<br/>* FROM student WHERE student_name LIKE('张%'<br/>OR '田%'; B: SELECT<br/>* FROM student WHERE SUBSTRING(student_name,1,1) in('张','田'); C: SELECT<br/>* FROM student WHERE SUBSTRING(student_name,1,1)= '张'<br/>OR SUBSTRING(student_name,1,1)='田'; D: SELECT<br/>* FROM student WHERE student_name LIKE '张%'<br/>OR student_name LIKE '田%';

    检索所有姓“张”、姓“田”的学生信息,可以使用的SQL语句有()。 A: SELECT<br/>* FROM student WHERE student_name LIKE('张%'<br/>OR '田%'; B: SELECT<br/>* FROM student WHERE SUBSTRING(student_name,1,1) in('张','田'); C: SELECT<br/>* FROM student WHERE SUBSTRING(student_name,1,1)= '张'<br/>OR SUBSTRING(student_name,1,1)='田'; D: SELECT<br/>* FROM student WHERE student_name LIKE '张%'<br/>OR student_name LIKE '田%';

  • 2022-06-06 问题

    检索所有姓“周”,或者姓“陈”的学生信息,可以使用的SQL语句有______。 A: SELECT * FROM studentWHERE student_name LIKE( '陈%' OR '周%'); B: SELECT * FROM student WHERE SUBSTRING(student_name,1,1) in ('陈','周'); C: SELECT * FROM student WHERE SUBSTRING(student_name,1,1)= '周' OR SUBSTRING(student_name,1,1)='陈'; D: SELECT * FROM student WHERE student_name LIKE '陈%' OR student_name LIKE '周%';

    检索所有姓“周”,或者姓“陈”的学生信息,可以使用的SQL语句有______。 A: SELECT * FROM studentWHERE student_name LIKE( '陈%' OR '周%'); B: SELECT * FROM student WHERE SUBSTRING(student_name,1,1) in ('陈','周'); C: SELECT * FROM student WHERE SUBSTRING(student_name,1,1)= '周' OR SUBSTRING(student_name,1,1)='陈'; D: SELECT * FROM student WHERE student_name LIKE '陈%' OR student_name LIKE '周%';

  • 2022-05-29 问题

    Student类中存在String类型name属性,下列Student类的构造方法中,哪个是正确的? A: Student(String name){} B: Student(String name) C: Student(name)() D: NewStudent (String name){}

    Student类中存在String类型name属性,下列Student类的构造方法中,哪个是正确的? A: Student(String name){} B: Student(String name) C: Student(name)() D: NewStudent (String name){}

  • 2022-06-06 问题

    下列不合法的标识符是___________。 A: _name B: student_name C: 18name D: NAME3

    下列不合法的标识符是___________。 A: _name B: student_name C: 18name D: NAME3

  • 2022-07-22 问题

    下列()不是合法的标识符 A: _name B: student_name C: 67huify D: WEEK

    下列()不是合法的标识符 A: _name B: student_name C: 67huify D: WEEK

  • 2022-06-07 问题

    以下代码中,实例方法定义正确的是() A: class Student: def setName(self,name): self.name=name B: class Student: def setName(name): self.name=name C: class Student: def setName(self): self.name=name D: class Student: def setName(name,self): self.name=name

    以下代码中,实例方法定义正确的是() A: class Student: def setName(self,name): self.name=name B: class Student: def setName(name): self.name=name C: class Student: def setName(self): self.name=name D: class Student: def setName(name,self): self.name=name

  • 2022-10-26 问题

    表student中的包含两个字段,整型的id,字符串型的name。只显示表student中name列记录的SQL语句正确的是() A: select name from student B: select * from student C: select from name in student D: select name

    表student中的包含两个字段,整型的id,字符串型的name。只显示表student中name列记录的SQL语句正确的是() A: select name from student B: select * from student C: select from name in student D: select name

  • 2022-06-16 问题

    下面哪一个是JSON数据?() A: {name:"xiaoming",age,"student"} B: {"name":"xiaoming","age":"student"} C: {"xiaoming","student"} D: ["xiaoming","student"]

    下面哪一个是JSON数据?() A: {name:"xiaoming",age,"student"} B: {"name":"xiaoming","age":"student"} C: {"xiaoming","student"} D: ["xiaoming","student"]

  • 2022-10-26 问题

    若想查询student表中name为空值的记录,则正确的SQL语句是( )。 A: SELECT * FROM student WHERE name = NULL; B: SELECT * FROM student WHERE name like NULL; C: SELECT * FROM student WHERE name = 'NULL'; D: SELECT * FROM student WHERE name is NULL;

    若想查询student表中name为空值的记录,则正确的SQL语句是( )。 A: SELECT * FROM student WHERE name = NULL; B: SELECT * FROM student WHERE name like NULL; C: SELECT * FROM student WHERE name = 'NULL'; D: SELECT * FROM student WHERE name is NULL;

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