Query database with comment meta - php

Question

I have a wordpress comment box with 2 custom files, name and country, which get written to the database with the meta_key tag as comment_name and comment_country. What I need to do is display these comments which needs to include the actual comment, as well as the values of the 2 custom fields. I need to query the database as I need to retrieve ALL comments, not just comments for that particular page.
The code I (kind of) have is:
<?php
global $wpdb;
$querystr = " SELECT comment_content FROM $wpdb->comments INNER JOIN $wpdb->commentmeta ON meta_key = 'comment_name'";
$comment_info = $wpdb->get_results($querystr, OBJECT);
echo '<ul>';
// display the results
foreach($comment_info as $info) {
echo '<li class="commentBox"><p>'. $info->comment_content .'</p><h6>'. $info->meta_value .'</h6></li>';
}
echo '</ul>';
?>
As you can probably see, I need to get the comment_content field which is in wp_comments, but also combine that with the meta_value of 2 meta_keys. I obviously haven't figured out how to try and add the second meta_key/value to my code.
Can anybody help me please as I am at my wits end with this!
UPDATE:
I can now query the info I need. I had to use aliases so I can query 2 different meta_keys with corresponding values. The code:
$querystr =
" SELECT * FROM $wpdb->comments, $wpdb->commentmeta AS commentmeta1, $wpdb->commentmeta AS commentmeta2
WHERE $wpdb->comments.comment_ID = commentmeta1.comment_id
AND $wpdb->comments.comment_ID = commentmeta2.comment_id
AND commentmeta1.meta_key = 'comment_name'
AND commentmeta2.meta_key = 'comment_country'
ORDER BY $wpdb->comments.comment_date DESC";
$comment_info = $wpdb->get_results($querystr, OBJECT);
So what I now need to do is reference commentmeta1 and commentmeta2 in my loop to output the 2 different values. The code I am using:
echo '<ul>';
// display the results
foreach($comment_info as $info) {
echo '<li class="commentBox"><p>' . $info->comment_content . '</p><h6>' . $info->meta_value['commentmeta1'] . ', ' . $info->meta_value['commentmeta2'] . '</h6></li>';
}
echo '</ul>';
The meta values don't output as they should, it basically takes the first letter only of my commentmeta2 ('comment_country'), and duplicates it for each instance (pic below). If I query only one meta key I can display the value in my loop fine by simply running $info->meta_value. How can I simply my meta_values as per my query?

Answer 1

How about specifying the columns you need in your SELECT statement:
SELECT comment_content, comment_name, comment_country FROM ...
Then reference them in your HTML as $info->comment_name and so on.
If you need more direction, you need to share the database schemas for your comments tables.

Answer 2

Sussed it! Final working code is as follows:
$querystr = " SELECT comment_content, commentmeta1.meta_value AS comment_name, commentmeta2.meta_value AS comment_country
FROM $wpdb->comments, $wpdb->commentmeta AS commentmeta1, $wpdb->commentmeta AS commentmeta2
WHERE $wpdb->comments.comment_ID = commentmeta1.comment_id
AND $wpdb->comments.comment_ID = commentmeta2.comment_id
AND commentmeta1.meta_key = 'comment_name'
AND commentmeta2.meta_key = 'comment_country' ORDER BY $wpdb->comments.comment_date DESC";
$comment_info = $wpdb->get_results($querystr, OBJECT);
echo '<ul>';
// display the results
foreach($comment_info as $info) {
echo '<li class="commentBox"><p>' . $info->comment_content . '</p>
<h6>' . $info->comment_name . ', ' . $info->comment_country . '</h6></li>';
}
echo '</ul>';
I basically needed to pass the alias into SELECT and assign a new alias which I could reference in my loop.