[英]SQL query works on phpMyAdmin but not in Codeigniter
我有這個查詢
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;
當我在phpmyadmin或任何具有sql comand功能的軟件中執行此命令時,一切正常,輸出結果如我所願。
當我嘗試在codeigniter中插入此問題時出現問題,而我的主要問題是使用if語句,我試圖像這樣插入
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();
第二種選擇
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();
它們都可以工作,但是在沒有第二個選擇選項的情況下會偏偏(如果有)。
誰能幫我解決這個問題。
我相信您的代碼應如下所示
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();
注意: select()
方法的第二個參數設置為FALSE
並使用order_by()
代替原始查詢中的group_by()
。
這樣使用
$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;
}
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