如何根据条件检索行数据？

Question

Hello there I'm VERY new to MySql and I have a databse named login and a table named login that have 4 columns id , username , password , and name . I have a login system using a form. I want to retrieve the name column of the row based on the username and passsword provided, and store it to a php variable.

Answer 1

Try this one

$user_data = mysql_result(mysql_query("SELECT name FROM login WHERE username = " . $_POST['username'] . " AND password = " . $_POST['password'] . " LIMIT 1"),0);

Answer 2

1)Retrieve row data based on a condition

 mysql> SELECT username FROM login WHERE username = 'xyz';

after this we will get data from username row where name = xyz