查询学生表中，所有学生的学号（sno），姓名（sname），性别（sex），和生日（birthday），下列select语句正确的是
A: SELECTsno, sname, sex, birthday FROMstudent
B: SELECT * FROM student
C: SELECTsno, sname, birthday FROM student
D: SELECTsno, sname, sex FROMstudent
A: SELECTsno, sname, sex, birthday FROMstudent
B: SELECT * FROM student
C: SELECTsno, sname, birthday FROM student
D: SELECTsno, sname, sex FROMstudent
举一反三
- 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&'
- 查找学生表student中姓名的第二个字为“t”的学生学号sno和姓名sname，下面SQL语句正确的是（）。 A: SELECT sno, sname FROM student WHERE sname='_t%'; B: SELECT sno, sname FROM student WHERE sname LIKE '_t%'; C: SELECT sno, sname FROM student WHERE sname＝'%t_'; D: SELECT sno, sname FROM student WHERE sname LIKE '%t_';
- 对于学生信息表：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 grade=NULL B: SELECT sno，sname FROM student WHERE grade IS NULL C: SELECT sno，age FROM student WHERE grade IS NULL D: SELECT sno，age FROM student WHERE grade=NULL
- 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
- 在student（sno，sname，ssex，sage，sdept）表中，查询学生姓名中包含“大”或“小”的学生信息。以下查询语句正确的是（ ）。 A: select * from student where sname in( '_[大小]%') B: select * from student where sname ='%大%' or sname='%小%' C: select * from student where sname like'%大%' or sname like'%小%' D: select * from student where sname like '%[大小]%'