Question

I have this query that retreives a list of id’s + NAME:

$sql = "SELECT id FROM #__table1 ";

$sql .= " WHERE (";
foreach($explode_tags as $k=>$explode_tag) {
  $sql .= "name = ".$db->Quote(trim($explode_tag));
  if(($k+1) != count($explode_tags))
  $sql .= " OR ";
}
$sql .= ")";        

$db->setQuery($sql);
$results = $db->loadResultArray();  

The result is an array like this:

keywordID    |    NAME
1                 cat
2                 dog
3                 horse

Now I have this table2:

id   |    ItemID    |    keywordID
1            4              1
2            4              2
3            4              3
4            6              1
5            6              2
6            7              1

I want to find from table2 all ItemID’s that have all keywordID’s found in table1.
In the example above I want to return only itemID 4 that has all keywords (all 3 of them).

I am running this query but I am not getting results:

...
$query .= " AND i.id IN (SELECT itemID FROM #__table2 WHERE (";
foreach($results as $k=>$result) {
$query .= "keywordID = ".(int)$result;
if(($k+1) != count($results))
$query .= " AND ";
}
$query .= "))";     

Answer 1

UPDATE

Sorry, I miss read your question. I’ve done simple test using this data:

id  itemId  keywordId
1   4       1
5   4       2
6   4       3
7   5       2
8   5       3
9   6       1
10  6       2
11  6       3
12  7       3
13  9       3
14  9       2
15  9       1

and using this query:

SELECT itemId, GROUP_CONCAT( keywordId ORDER BY keywordId ) AS crpcnct, COUNT( itemId ) 
FROM  `temporary_table_123` 
GROUP BY 1 
HAVING crpcnct =  '1,2,3' 

I can get the value that you wanted:

itemId  crpcnct  count(itemId)
4       1,2,3    3
6       1,2,3    3
9       1,2,3    3

To achieve this, all you have to do is build the keywordID you want to use:

$keywordIds[] = $results['keywordId'];

and then sort accending

sort($keywordIds);

the last step is, supply this array into query:

SELECT itemId, GROUP_CONCAT( keywordId ORDER BY keywordId ) AS crpcnct, COUNT( itemId ) 
FROM  `temporary_table_123` 
GROUP BY 1 
HAVING crpcnct =  '" . implode(",", $keywordIds) . "'

There you have it.