Enorme Requête

[Hilz]

Bonjour,

 

Suite à l'analyse de mes slowlog, je me rends compte qu'une requête énorme utilise énormément de ressources. Malgré mes recherches, je n'ai pas réussi à identifier sa provenance.

 

Pourriez-vous m'aider ? Puis-je la factoriser ?

 

# Time: 130227  6:30:01
# Query_time: 5.694500  Lock_time: 0.000302 Rows_sent: 737  Rows_examined: 18216429
SET timestamp=1361943001;
SELECT cp.`id_product_attribute`, cp.`id_product`, cu.`id_customization`, cp.`quantity` AS cart_quantity, cu.`quantity` AS customization_quantity, pl.`name`,
	pl.`description`, pl.`available_now`, pl.`available_later`, p.`id_product`, p.`id_category_default`, p.`id_supplier`, p.`id_manufacturer`, p.`on_sale`, p.`ecotax`, p.`additional_shipping_cost`, p.`available_for_order`,
	p.`quantity`, p.`price`, p.`weight`, p.`width`, p.`height`, p.`depth`, p.`out_of_stock`, p.`active`, p.`date_add`, p.`date_upd`, IFNULL(pa.`minimal_quantity`, p.`minimal_quantity`) as minimal_quantity,
	t.`id_tax`, tl.`name` AS tax, t.`rate`, pa.`price` AS price_attribute, pa.`quantity` AS quantity_attribute,
	pa.`ecotax` AS ecotax_attr, i.`id_image`, il.`legend`, pl.`link_rewrite`, cl.`link_rewrite` AS category, CONCAT(cp.`id_product`, cp.`id_product_attribute`) AS unique_id,
	IF (IFNULL(pa.`reference`, '') = '', p.`reference`, pa.`reference`) AS reference,
	IF (IFNULL(pa.`supplier_reference`, '') = '', p.`supplier_reference`, pa.`supplier_reference`) AS supplier_reference,
	(p.`weight`+ pa.`weight`) weight_attribute,
	IF (IFNULL(pa.`ean13`, '') = '', p.`ean13`, pa.`ean13`) AS ean13, IF (IFNULL(pa.`upc`, '') = '', p.`upc`, pa.`upc`) AS upc,
	pai.`id_image` as pai_id_image
	FROM `ps_cart_product` cp
	LEFT JOIN `ps_product` p ON p.`id_product` = cp.`id_product`
	LEFT JOIN `ps_product_lang` pl ON (p.`id_product` = pl.`id_product` AND pl.`id_lang` = 2)
	LEFT JOIN `ps_product_attribute` pa ON (pa.`id_product_attribute` = cp.`id_product_attribute`)
	LEFT JOIN `ps_tax_rule` tr ON (p.`id_tax_rules_group` = tr.`id_tax_rules_group`
		AND tr.`id_country` = 70
		AND tr.`id_state` = 0)
  	 LEFT JOIN `ps_tax` t ON (t.`id_tax` = tr.`id_tax`)
	LEFT JOIN `ps_tax_lang` tl ON (t.`id_tax` = tl.`id_tax` AND tl.`id_lang` = 2)
	LEFT JOIN `ps_customization` cu ON (p.`id_product` = cu.`id_product`)
	LEFT JOIN `ps_product_attribute_image` pai ON (pai.`id_product_attribute` = pa.`id_product_attribute`)
	LEFT JOIN `ps_image` i ON (IF(pai.`id_image`,
		i.`id_image` =
		(SELECT i2.`id_image`
		FROM `ps_image` i2
		INNER JOIN `ps_product_attribute_image` pai2 ON (pai2.`id_image` = i2.`id_image`)
		WHERE i2.`id_product` = p.`id_product` AND pai2.`id_product_attribute` = pa.`id_product_attribute`
		ORDER BY i2.`position`
		LIMIT 1),
		i.`id_product` = p.`id_product` AND i.`cover` = 1)
	)
	LEFT JOIN `ps_image_lang` il ON (i.`id_image` = il.`id_image` AND il.`id_lang` = 2)
	LEFT JOIN `ps_category_lang` cl ON (p.`id_category_default` = cl.`id_category` AND cl.`id_lang` = 2)
	WHERE cp.`id_cart` = 9590

	AND p.`id_product` IS NOT NULL
	GROUP BY unique_id
	ORDER BY cp.date_add ASC;

 

 

Merci d'avance à vous.