누구든지 다음 쿼리를 도와 드릴 수 있습니까? (180352 행)간단한 쿼리로 인해 주문이 매우 느림
SELECT COUNT(p.stock_id) AS num_products,
p.master_photo, p.product_photo, p.stock_id, p.master, p.title, p.price, p.stock_level, p.on_order, p.location, p.supplier, p.category, p.sub_category, p.reorder
FROM products AS p
WHERE p.sub_category != 'Subscriptions'
GROUP BY p.master
ORDER BY p.stock_id ASC
LIMIT 0, 20
6 초에 실행 중입니다.
주문을 삭제하면 0.0023 초가됩니다.
또한 그룹을 제거 할 때도 마찬가지입니다.
stock_id (고유) 및 sub_category는 색인됩니다.
내가 마스터로 그룹화하여 제품 변형 수를 계산하고 주문할 수있는 필수적인 요소 인 것처럼이 질문에 접근하는 또 다른 방법은 생각할 수 없습니다 (반드시 stock_id로 작성해야하는 것은 아니지만 그렇습니다). 기본값). e4c5의 요청에 따라
아래id: 1
select_type: SIMPLE
table: p
type: index
possible_keys: sub_category
key: master
key_len: 52
ref: NULL
rows: 21
Extra: Using where
에 의해 순서없이 다음
id: 1
select_type: SIMPLE
table: p
type: range
possible_keys: sub_category
key: sub_category
key_len: 52
ref: NULL
rows: 181691
Extra: Using where; Using temporary; Using filesort
및 의하여 주문과 설명의 결과가 당신에게
감사
그리고 그 아래가 creat입니다. e 표
CREATE TABLE IF NOT EXISTS `products` (
`stock_id` varchar(50) NOT NULL,
`conv_stock_id` varchar(100) NOT NULL,
`conv_quantity` decimal(10,2) NOT NULL,
`master` varchar(50) NOT NULL,
`master_photo` varchar(255) NOT NULL,
`free_guide_photo` varchar(255) NOT NULL,
`product_var_photo` varchar(255) NOT NULL,
`master_title` varchar(255) NOT NULL,
`master_slug` varchar(255) NOT NULL,
`master_page_title` varchar(255) NOT NULL,
`product_photo` varchar(255) NOT NULL,
`original_product_photo` varchar(255) NOT NULL,
`title` varchar(255) NOT NULL,
`orig_title` varchar(255) NOT NULL,
`page_title` varchar(255) NOT NULL,
`description` longtext NOT NULL,
`slug` varchar(255) NOT NULL,
`custom_url` varchar(255) NOT NULL,
`location` varchar(255) NOT NULL,
`supplier` varchar(50) NOT NULL,
`supplier_stock_id` varchar(50) NOT NULL,
`supplier_discount` int(11) NOT NULL,
`category` varchar(50) NOT NULL,
`sub_category` varchar(50) NOT NULL,
`cost_price` decimal(10,2) NOT NULL,
`discount_cost_price` decimal(10,2) NOT NULL,
`price` decimal(10,2) NOT NULL,
`sale_price` decimal(10,2) NOT NULL,
`sale_price_startdate` date NOT NULL,
`sale_price_enddate` date NOT NULL,
`orig_price_trail` int(3) NOT NULL,
`price_trail` varchar(50) NOT NULL,
`price_rule` int(1) NOT NULL,
`pack_size` int(11) NOT NULL,
`parcel_size` int(1) NOT NULL,
`packaging_rule` int(11) NOT NULL,
`cut_tear` int(1) NOT NULL,
`oversized_parcel` int(1) NOT NULL,
`print_label` int(1) NOT NULL,
`stock_level` decimal(10,1) NOT NULL,
`stock_level_group` varchar(50) NOT NULL,
`stock_level_increment` decimal(10,2) NOT NULL,
`stock_check_date` datetime NOT NULL,
`reorder` int(1) NOT NULL,
`reorder_level` decimal(10,1) NOT NULL,
`reorder_quantity` decimal(10,1) NOT NULL,
`reorder_attempts` int(1) NOT NULL,
`unit_size` decimal(10,1) NOT NULL,
`on_order` decimal(10,1) NOT NULL,
`date_ordered` datetime NOT NULL,
`back_order` decimal(10,1) NOT NULL,
`uom` decimal(10,1) NOT NULL,
`uom_value` varchar(100) NOT NULL,
`stock_estimate` int(1) NOT NULL,
`due_date` datetime NOT NULL,
`quantity` varchar(255) NOT NULL,
`colour` varchar(255) NOT NULL,
`colour_family` varchar(255) NOT NULL,
`type` varchar(255) NOT NULL,
`style` varchar(255) NOT NULL,
`pattern` varchar(255) NOT NULL,
`shape` varchar(255) NOT NULL,
`design` varchar(255) NOT NULL,
`fibre` varchar(255) NOT NULL,
`material` varchar(255) NOT NULL,
`pattern_for` varchar(255) NOT NULL,
`difficulty` varchar(255) NOT NULL,
`fabric_count` varchar(255) NOT NULL,
`yarn_thickness` varchar(255) NOT NULL,
`suggested_needle_size` varchar(255) NOT NULL,
`tension` varchar(255) NOT NULL,
`collections` varchar(255) NOT NULL,
`product_features` varchar(255) NOT NULL,
`size` varchar(255) NOT NULL,
`actual_size` varchar(255) NOT NULL,
`length` varchar(255) NOT NULL,
`width` varchar(255) NOT NULL,
`weight` varchar(255) NOT NULL,
`weight_gsm` varchar(255) NOT NULL,
`brand` varchar(255) NOT NULL,
`designer` varchar(255) NOT NULL,
`composition` varchar(255) NOT NULL,
`washing_instructions` varchar(255) NOT NULL,
`matching_thread` varchar(50) NOT NULL,
`sample` varchar(50) NOT NULL,
`fat_quarter` varchar(50) NOT NULL,
`barcode` varchar(13) NOT NULL,
`list_international` int(1) NOT NULL,
`token` varchar(50) NOT NULL,
`create_sample` int(1) NOT NULL,
`create_fatquarter` int(1) NOT NULL,
`create_listing_type` int(1) NOT NULL,
`create_listing_size` int(11) NOT NULL,
`create_listing_price` decimal(10,2) NOT NULL,
`create_listing_price_rule` int(11) NOT NULL,
`create_listing_sale_price` decimal(10,2) NOT NULL,
`create_listing_parcelsize` int(1) NOT NULL,
`create_listing_barcode` varchar(13) NOT NULL,
`auto_listing` int(1) NOT NULL,
`custom_bridal` int(1) NOT NULL,
`pickwave_assign` int(1) NOT NULL,
`kit_product` int(11) NOT NULL,
`fatquarter_product` int(1) NOT NULL,
`sample_product` int(1) NOT NULL,
`grouped_product` int(1) NOT NULL,
`grouped_product_quantity` decimal(10,1) NOT NULL,
`multiple_product` int(1) NOT NULL,
`freepost_product` int(1) NOT NULL,
`status` int(1) NOT NULL,
`update_stock_level` int(1) NOT NULL,
`force_product_photo` int(1) NOT NULL,
`created_master_photo` int(1) NOT NULL,
`force_master_photo` int(1) NOT NULL,
`created_free_guide_photo` int(1) NOT NULL,
`force_free_guide_photo` int(1) NOT NULL,
`created_product_var_photo` int(1) NOT NULL,
`force_product_var_photo` int(1) NOT NULL,
`force_additional_photo` int(1) NOT NULL,
`created_price_levelling` int(1) NOT NULL,
`created_grouped_product` int(1) NOT NULL,
`updated_stock_level` int(1) NOT NULL,
`create_multiple_listing` int(1) NOT NULL,
`create_freepost_listing` int(1) NOT NULL,
`create_freeguide_info` int(1) NOT NULL,
`created_by` int(11) NOT NULL,
`date_created` datetime NOT NULL,
UNIQUE KEY `stock_id` (`stock_id`),
KEY `token` (`token`),
KEY `title` (`title`),
KEY `stock_level_group` (`stock_level_group`),
KEY `sub_category` (`sub_category`),
KEY `stock_level` (`stock_level`),
KEY `category` (`category`),
KEY `conv_stock_id` (`conv_stock_id`),
KEY `conv_quantity` (`conv_quantity`),
KEY `created_price_levelling` (`created_price_levelling`),
KEY `master` (`master`),
KEY `colour` (`colour`),
KEY `auto_listing` (`auto_listing`),
KEY `multiple_product` (`multiple_product`),
KEY `status` (`status`),
KEY `ebay_master` (`ebay_master`),
KEY `parcel_size` (`parcel_size`),
KEY `grouped_product` (`grouped_product`),
KEY `sample_product` (`sample_product`),
KEY `fatquarter_product` (`fatquarter_product`),
KEY `created_grouped_product` (`created_grouped_product`),
KEY `price` (`price`),
KEY `freepost_product` (`freepost_product`),
KEY `master_title` (`master_title`),
KEY `c_sub_category_master` (`sub_category`,`master`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
'GROUP BY'는 'ORDER BY'만큼 느려야합니다. –
왜 모든 행이 필요합니까? 진심으로 당신은 동시에 180352 개의 행이 필요합니까? 페이지가 매겨지면 도움이 될 것입니다. – Grommy
마스터에 인덱스를 추가하려고 시도 했습니까? 당신은 그걸로 그룹화하고 있습니다. – spiderman