sql="select username from tablename where username='CSDN'" conn.open sqlif rs.recordcount<2 then msgbox "CSDN是唯一的用户名"
TO starsoulxp(星魂.NET) 引用一下或是 sql="select count(username) as SumUsername from tablename where username='CSDN'" conn.open sqlif SumUsername<2 then msgbox "CSDN是唯一的用户名"
sql="select username from tablename where username='username'" conn.open sql if rs.recordcount<2 then msgbox"username是唯一的用户名"
sql="select count(username) from tablename where username='CSDN'" hRt=conn.exectue(sql)(0) if hRt<2 then msgbox "CSDN是唯一的用户名"
sql="select count(username) from tablename where username='CSDN'" hRt=conn.exectue(sql)(0) if hRt<2 then msgbox "CSDN是唯一的用户名" 这个方法比较好,我个人认为
conn.open sqlif rs.recordcount<2 then msgbox "CSDN是唯一的用户名"
sql="select count(username) as SumUsername from tablename where username='CSDN'"
conn.open sqlif SumUsername<2 then msgbox "CSDN是唯一的用户名"
conn.open sql
if rs.recordcount<2 then msgbox"username是唯一的用户名"
sql="select count(username) from tablename where username='CSDN'"
hRt=conn.exectue(sql)(0) if hRt<2 then msgbox "CSDN是唯一的用户名"
hRt=conn.exectue(sql)(0) if hRt<2 then msgbox "CSDN是唯一的用户名"
这个方法比较好,我个人认为