A: Select* From Student Where Age>=20 ANDAge>=30
B: Select* From Student Where Age>=20 ANDAge<=30
C: Select* From Student Where Age BET WENN 20AND30
D: Select* From Student Where Age>=20&&Age>=30"
举一反三
- 下面 语句和”select * from student where sex=’男’ && age=20;”语句查询出的结果是一样的。（ ） A: select * from student where sex=’男’ or age=20; B: select * from student where sex=’男’ || age=20; C: select * from student where sex=’男’ and age=20; D: select * from student where sex,age in(’男’,20);
- 数据库中有一张表名称为Student，有列Name，Age，IDCard，Sex。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 Sex ='女' C: Select * From Student Where Sex In '男' D: Select * From Student Where Sex ='男'
- 查询年龄不在20到23岁之间的学生的信息，所使用的语法命令为（） A: select * from student where age not between 20 and 23 B: select * from student where age between 20 and 23 C: select * from student where age not between 20 to 23 D: select * from student where not age from 20 to 23
- 对于学生信息表：student(sno，sname，sex，age，dept)，能够得到年龄在20岁至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 22 B: SELECT sname，sno FROM student WHERE age BETWEEN 20 AND 22 C: SELECT sname，sno FROM student WHERE age>=20 D: SELECT sname，sno FROM student WHERE age<=22
- 查询年龄在20到23岁之间的学生的信息，所使用的语法命令为（） A: select * from student where age between 20 to 23 B: select * from student where age from 20 to 23 C: select * from student where age between 20 and 23 D: select * from student
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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&rsquo
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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*FromStudentWhereAge>=20ANDAge>=30 B: Select*FromStudentWhereAge>=20ANDAge<=30 C: Select*FromStudentWhereAgeBETWENN20AND30 D: Select*FromStudentWhereAge>=20&&Age>=30"
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学生表student中，将年龄小于30岁的记录删除，下面的语句正确的是（ ）。 A: DELETE FROM student FOR age<;30 B: DELETE FROM student WHERE age<;30 C: DELETE TABLE student WHERE age<;30 D: DELETE FROM student HAVING age<;30
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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: ASelect* From Student Where Sex=’男’ B: BSelect* From Student Where Number NotIn（Select Number From Student Where Sex<>=’男’） C: CSelect* From Student Where NumberIn（Select Numbe rFrom Student Where Sex=’男’） D: DSelect* From Student Where Sex<>’男’
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有学生信息表student，求年龄在20～22岁之间(含20岁和22岁)的学生姓名和年龄的SQL语句是：SELECT sname,age FROM student WHERE age（ ）。 A: >20 and age<22 B: BETWEEN 20 AND 22 C: >=20 and age<22 D: >20 and age<=22