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()+';
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%