A: String sql=Select * from Student where Sname=+txtName.getText();
B: String sql=Select * from Student where Sname='+txtName.getText()+';
C: String sql=Select * from Student where Sname like +txtName.getText();
D: String sql=Select * from Student where Sname like '+txtName.getText()+';
举一反三
- 根据用户在文本框txtName中输入的姓名对Student表进行查询，以下SQL语句定义正确的是__________________。 A: String sql="Select * from Student where Sname="+txtName.getText(); B: String sql="Select * from Student where Sname='"+txtName.getText()+"'"; C: String sql="Select * from Student where Sname like "+txtName.getText(); D: String sql="Select * from Student where Sname like '"+txtName.getText()+"'";
- 从Student表检索姓周的学生，对应的SQL语句是( )。 A: Select * From Student Where Sname like '周%' B: Select * From Student Where Sname like '%周' C: Select * From Student Where Sname like '_周' D: Select * From Student Where Sname like '周_'
- 【单选题】若要“检索名字为张某某的所有同学姓名”,SQL语句正确的是()。 A. SELECT Sname FROM Student WHERE Sname Like ‘张____’ B. SELECT Sname FROM Student WHERE Sname Like ‘张%’ C. SELECT Sname FROM Student WHERE Sname Like ‘张_’ D. SELECT Sname FROM Student WHERE Sname Not Like ‘张_ _’
- 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_';
- 查询姓“李”的学生的所有信息 A: select * from student where sname like ‘#李%’ B: select * from student where sname like ‘%李#’ C: select * from student where sname like “%李%” D: select * from student where sname like ‘%李%
内容
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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]%'
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在学生关系student(sid,sname……)中,student的属性分别表示学号和姓名,若要查询学号为19170201的学生姓名,下列SQL语句正确的是( )。Ⅰ.SELECT sname FROM student WHERE sid LIKE '19170201'Ⅱ.SELECT sname FROM student WHERE sid LIKE= '19170201'Ⅲ.SELECT sname FROM student WHERE sid='19170201' A: Ⅰ、Ⅱ B: Ⅰ、Ⅲ C: Ⅱ、Ⅲ D: Ⅰ、Ⅱ、Ⅲ
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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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查询姓"张"的学生姓名,下列()语句不能实现。 A: SELECT sname FROM student WHERE left(sname,1)= '张' B: SELECT snameFROM student WHERE sname LIKE '张%' C: SELECT sname FROM student WHERE substring(sname,1,1)= '张' D: SELECT sname FROM student WHERE sname='张%'
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S_T数据库关系图如下:[img=332x128]17e448fc85e997f.jpg[/img]查询与“刘晨”在同一个系学习的学生,要求显示学生学号(Sno)、姓名(Sname)及系别(Sdept)。下列SQL语句正确的是()。 A: SELECT Sno, Sname, Sdept FROM Student WHERE Sdept = (SELECT Sdept FROM Student WHERE Sname = '刘晨'); B: SELECT S1.Sno, S1.Sname , S1.Sdept FROM Student S1 , Student S2 WHERE S1.Sdept = S2.Sdept AND S2.Sname = '刘晨'; C: SELECT Sno, Sname, Sdept FROM Student WHERE Sdept IN (SELECT Sdept FROM Student WHERE Sname = '刘晨'); D: SELECT Sno, Sname, Sdept FROM Student WHERE Sdept LIKE (SELECT Sdept FROM Student WHERE Sname = '刘晨');