Only the last record from the database is displayed - php

Question

I connected, I created a quick script in which I want to manage clients, domains and notes.
The problem is that when I add 2 notes to the client from ID: 1 - after viewing I see only one.
The following code shows what I have done so far
SQL Query:
$sql = "SELECT * FROM domain JOIN note ON domain.id = note.domain_id GROUP BY domain.id";
My PHP code:
while($rs = $resultdb->fetch_array(MYSQLI_ASSOC)) {
echo '<tr>';
echo '<td>'.$rs["id"].'</td>';
echo '<td><strong>'.$rs["domain_name"].'</strong></td>';
echo '<td>'.$rs["note"].'</td>';
echo '</tr>';
}
The result he gets is:
ID DOMAIN NOTE
1 "domain1.com" "note 1 to domain1.com"
2 "domain2.com" "note 2 to domain2.com"
However, in the database I have added a few notes to domain1.com.
I would like to see all the notes added to a given domain.
EDIT:
When I do: "SELECT * FROM domain JOIN note ON domain.id = note.domain_id";
I getting:
I getting
I expect
EDIT: Add screnshot
LEFT JOIN

Answer 1

Your GROUP BY is limiting the records retrieved by the query. If you want all of the notes together you can try using GROUP_CONCAT() to produce a single field with all of the notes in one...
$sql = "SELECT domain.id as id, domain.domain_name as domain_name,
GROUP_CONCAT(note.note) as note
FROM domain
LEFT JOIN note ON domain.id = note.domain_id
GROUP BY domain.id";
You might also change the JOIN to LEFT JOIN in case there are no notes for a particular domain.

Answer 2

Probably you need to use a separate query to get "Domain Notes" in the while. for example:
while ($rs = $resultdb->fetch_array(MYSQLI_ASSOC)) {
$sql_notes = "SELECT * FROM notes WHERE domain_id = '" . (int)$rs['domain_id'] . "'";
...
}

Answer 3

you need group_concat group by note.domain_id
if you need exact match the use inner join
"SELECT id, domain, group_concat(note) as note
FROM domain
INNER JOIN note ON domain.id = note.domain_id
GROUP BY note.domain_id";
if you needc result also for id without notes then try
"SELECT id, domain, (group_concat(ifnull(note,'')) as note
FROM domain
LEFT JOIN note ON domain.id = note.domain_id
GROUP BY note.domain_id";