Question

急： sql="select & from user_info where UserName='"+UserName+"'" and Password="+Password";

这个语句有错误，帮我改改。

Answer 1

sql="select * from user_info where UserName="+UserName+" and Password="+Password;

Answer 2

&换成*啊

Answer 3

sql="select * from user_info where UserName=' "+UserName+" ' and Password=' "+Password+" ' " ;

Answer 4

sql="select & from user_info where UserName='"+UserName+"' and Password='"+Password+"'"

Answer 5

sql="select * from user_info where UserName="+UserName+" and Password="+Password";