PHP/MySQL UNION statement question

Posted on 2011-09-08
Last Modified: 2012-06-21
I am trying to use a union statement to select two values from two different tables. When i run it as an SQL it works fine but when I try to use it with php it only returns the first part of the query. here is the code below. I have also tried (statement a) UNION (statement b) like the description in the manual.  thanks for any help with this.

$query = "SELECT description FROM pages WHERE `page_id` = 'index' UNION SELECT age FROM names WHERE `name` = 'brian'";
$results = mysql_query($query);
$info = mysql_fetch_array($results);

$descrip = $info['description'];
$age = $info['age'];

echo $descrip . "-" . $age . "<br>";

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Question by:jaxbrian
  • 2
LVL 142

Accepted Solution

Guy Hengel [angelIII / a3] earned 500 total points
ID: 36504534
this is normal, because UNION will result in 2 rows, not "append" the columns.

you might want this:
query = "SELECT p.description , n.age FROM pages p, names n
WHERE p.`page_id` = 'index' and n.`name` = 'brian'";

$results = mysql_query($query);
$info = mysql_fetch_array($results);

$descrip = $info['description'];
$age = $info['age'];

echo $descrip . "-" . $age . "<br>";

Open in new window


Author Comment

ID: 36504873
That worked, I have no idea why. lol. I am goign to read more on it now and see whats going on.

thank you for your help

Author Closing Comment

ID: 36504876
thank you

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