SQL query works on phpMyAdmin but not in Codeigniter - php

Question

I have this query
SELECT
arl_kind,
IF (tof_art_lookup.arl_kind = 2, tof_suppliers.sup_brand, tof_brands.bra_brand) AS brand,
arl_display_nr
FROM
tof_art_lookup
LEFT JOIN
tof_brands
ON
bra_id = arl_bra_id
INNER JOIN
tof_articles
ON
tof_articles.art_id = tof_art_lookup.arl_art_id
INNER JOIN
tof_suppliers
ON
tof_suppliers.sup_id = tof_articles.art_sup_id
WHERE
arl_art_id = #art_id
AND arl_kind IN (3)
ORDER BY
arl_kind,
bra_brand,
arl_display_nr limit 100;
when I execute this on phpmyadmin or in any software that has sql comand capabilities everything works and the output is as i should.
The problem appears when I try to insert this in codeigniter, and my main probles is with the if statement, I tried to insert it like this
return $query = $this->db
->SELECT('
arl_kind,
IF (tof_art_lookup.arl_kind = 2, tof_suppliers.sup_brand, tof_brands.bra_brand) AS brand,
arl_display_nr
FROM
tof_art_lookup
LEFT JOIN
tof_brands
ON
bra_id = arl_bra_id
INNER JOIN
tof_articles
ON
tof_articles.art_id = tof_art_lookup.arl_art_id
INNER JOIN
tof_suppliers
ON
tof_suppliers.sup_id = tof_articles.art_sup_id
WHERE
arl_art_id = #art_id
AND arl_kind IN (3)
ORDER BY
arl_kind,
bra_brand,
arl_display_nr limit 100')
->get();
and second option like that
return $query = $this->db
->select('ARL_KIND, IF (tof_art_lookup.arl_kind = 2, tof_suppliers.sup_brand, tof_brands.bra_brand) AS brand,ARL_DISPLAY_NR')
->from('tof_art_lookup')
->join('tof_brands','bra_id = arl_bra_id','LEFT')
->join('tof_articles','tof_articles.art_id = tof_art_lookup.arl_art_id','INNER')
->join('tof_suppliers','tof_suppliers.sup_id = tof_articles.art_sup_id','INNER')
->where('ARL_ART_ID',$id)
->where_in('ARL_KIND',array('3'))
//->where('A.ARL_DISPLAY','0')
->group_by('arl_kind','bra_brand','arl_display_nr')
->get();
both of them work but partialy without the second select option the one with the if.
Can anyone help me to fix this.

Answer 1

I believe your code should look like this
return $query = $this->db
->select('arl_kind, IF(tof_art_lookup.arl_kind = 2, tof_suppliers.sup_brand, tof_brands.bra_brand) AS brand,ARL_DISPLAY_NR', FALSE)
->from('tof_art_lookup')
->join('tof_brands', 'bra_id = arl_bra_id', 'LEFT')
->join('tof_articles', 'tof_articles.art_id = tof_art_lookup.arl_art_id', 'INNER')
->join('tof_suppliers','tof_suppliers.sup_id = tof_articles.art_sup_id', 'INNER')
->where('arl_art_id', $id)
->where_in('arl_kind', array('3'))
->order_by('arl_kind','bra_brand','arl_display_nr')
->limit(100)
->get();
Note: second parameter of select() method is set to FALSE and order_by() is used instead of group_by() as in your original query.

Answer 2

use like this
$query_string = "SELECT
arl_kind,
IF (tof_art_lookup.arl_kind = 2, tof_suppliers.sup_brand, tof_brands.bra_brand) AS brand,
arl_display_nr
FROM
tof_art_lookup
LEFT JOIN
tof_brands
ON
bra_id = arl_bra_id
INNER JOIN
tof_articles
ON
tof_articles.art_id = tof_art_lookup.arl_art_id
INNER JOIN
tof_suppliers
ON
tof_suppliers.sup_id = tof_articles.art_sup_id
WHERE
arl_art_id = #art_id
AND arl_kind IN (3)
ORDER BY
arl_kind,
bra_brand,
arl_display_nr limit 100";
$query=$this->db->query($query_string);
if ($query->num_rows () > 0) {
return $query->result_array ();
} else {
return FALSE;
}