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MySQL query select

Posted on 2011-03-20
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Last Modified: 2013-12-13
An unusual problem has just cropped up that I am having some problems figuring out.

A simple query I have used may times is having trouble returing values when the username is anything other than a number. When The username is a text value my query returns "helloUnknown column 'myUsername' in 'where clause'".

The username MySQL value is varchar. Any ideas?
Cheers,
N
<?php  
  // connect to db
  $conn = db_connect();
  // find information dependant on username
  $result = $conn->query("SELECT * FROM members
                         WHERE username=".$_SESSION['valid_user']."");
						 if (!$result) {
     echo'<p>There was a problem retrieving data from the database. Please try again later</p>';
  } else {
     $row = $result->fetch_assoc();
  }
 ?>

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Question by:Neil_Bradley
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4 Comments
 
LVL 83

Accepted Solution

by:
Dave Baldwin earned 500 total points
ID: 35177031
I think you're missing single quotes around the username value.  Try this.
<?php  
  // connect to db
  $conn = db_connect();
  // find information dependant on username
  $result = $conn->query("SELECT * FROM members
                         WHERE username='".$_SESSION['valid_user']."'");
                                                 if (!$result) {
     echo'<p>There was a problem retrieving data from the database. Please try again later</p>';
  } else {
     $row = $result->fetch_assoc();
  }
 ?>

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0
 
LVL 5

Author Comment

by:Neil_Bradley
ID: 35177063
Star! Your solution worked perfectly.
Thanks,
Neil
0
 
LVL 5

Author Closing Comment

by:Neil_Bradley
ID: 35177065
Perfection. Excellent quick responce.
0
 
LVL 83

Expert Comment

by:Dave Baldwin
ID: 35177070
Thanks, I get them right sometimes!
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