SQL查詢來獲取所有的產品，類別和元數據woocommerce/WordPress的

Question

我卡試圖創建一個返回我參數的查詢：

ID，POST_TITLE，POST_CONTENT，類別，ID_category，SKU，名稱，股票，價格

在這一刻我有這樣的：

SELECT 
p.ID, 
p.post_title, 
`post_content`, 
`post_excerpt`, 
t.name AS product_category, 
t.slug AS product_slug, 
tt.term_taxonomy_id AS tt_term_taxonomia, 
tr.term_taxonomy_id AS tr_term_taxonomia, 
MAX(CASE WHEN pm1.meta_key = '_price' then pm1.meta_value ELSE NULL END) as price, 
MAX(CASE WHEN pm1.meta_key = '_regular_price' then pm1.meta_value ELSE NULL END) as regular_price, 
MAX(CASE WHEN pm1.meta_key = '_sale_price' then pm1.meta_value ELSE NULL END) as sale_price, 
MAX(CASE WHEN pm1.meta_key = '_sku' then pm1.meta_value ELSE NULL END) as sku 

FROM wp_posts p LEFT JOIN wp_postmeta pm1 ON (pm1.post_id = p.ID) 
LEFT JOIN wp_term_relationships AS tr ON (tr.object_id = p.ID) 
LEFT JOIN wp_term_taxonomy AS tt ON (tt.taxonomy = 'product_cat' AND tr.object_id = tt.term_taxonomy_id) 
LEFT JOIN wp_terms AS t ON (t.term_id = tt.term_id) 
WHERE p.post_type in('product', 'product_variation') AND p.post_status = 'publish' AND p.post_content <> '' 
GROUP BY p.ID,p.post_title 

而且它正確地給我的產品和元數據，但它是非常困難的，我讓在這個類別ID和類別名稱查詢和我一直無法在網上找到信息。

謝謝。

Answer 1

你有object_id加入term_taxonomy_id這是沒有意義的。

下面是我認爲它應該是 - 警告：我從來沒有查詢過一個wp數據庫，只是通過文檔。

SELECT 
    p.ID, 
    p.post_title, 
    `post_content`, 
    `post_excerpt`, 
    t.name AS product_category, 
    t.term_id AS product_id, 
    t.slug AS product_slug, 
    tt.term_taxonomy_id AS tt_term_taxonomia, 
    tr.term_taxonomy_id AS tr_term_taxonomia, 
    MAX(CASE WHEN pm1.meta_key = '_price' then pm1.meta_value ELSE NULL END) as price, 
    MAX(CASE WHEN pm1.meta_key = '_regular_price' then pm1.meta_value ELSE NULL END) as regular_price, 
    MAX(CASE WHEN pm1.meta_key = '_sale_price' then pm1.meta_value ELSE NULL END) as sale_price, 
    MAX(CASE WHEN pm1.meta_key = '_sku' then pm1.meta_value ELSE NULL END) as sku 
FROM wp_posts p 
LEFT JOIN wp_postmeta pm1 ON pm1.post_id = p.ID 
LEFT JOIN wp_term_relationships AS tr ON tr.object_id = p.ID 
JOIN wp_term_taxonomy AS tt ON tt.taxonomy = 'product_cat' AND tt.term_taxonomy_id = tr.term_taxonomy_id 
JOIN wp_terms AS t ON t.term_id = tt.term_id 
WHERE p.post_type in('product', 'product_variation') AND p.post_status = 'publish' AND p.post_content <> '' 
GROUP BY p.ID,p.post_title