SELECT S#,SNAME FROM,S WHERE SNAME='刘%' SELECT S#,SNAME FROM S WHERE SNAME='刘_' SELECT S#,SNAME FROM S WHERES NAME LIKE'刘%' SELECT S#,SNAME FROM S WHERES NAME LIKE'刘'
SELECT S#,SNAME FROM S WHERE SNAME='刘%' SELECT S#,SNAME FROM S WHERE SNAME='刘_' SELECT S#,SNAME FROM S WHERE SNAME LIKE'刘%' SELECT S#,SNAME FROM S WHERE SNAME LIKE'刘_'