CONCAT LEFT JOIN MySQL語句

Question

我正在嘗試構建一個MySQL語句，它從兩個MySQL表中獲取數據並顯示它們的關聯數據。

我現在的問題是試圖以連接「_billing_first_name」和「_billing_last_name」田成一個「計費全名」列

查詢結果目前只表示第一計費名稱，而不是第二個連接的值。

我選擇當前語句低於：

SELECT 
     wp_posts.ID, 
     wp_posts.post_title, 
     pm1.meta_value as 'Billing Address 1', 
     pm2.meta_value as 'Billing Address 2', 
     pm3.meta_value as 'Billing City', 
     pm4.meta_value as 'Billing State', 
     pm5.meta_value as 'Billing Postcode', 
     pm6.meta_value as 'Billing Email', 
     pm7.meta_value as 'Billing Phone', 
     pm8.meta_value as 'Billing Full Name', 
     pm10.meta_value as 'Shipping First Name', 
     pm11.meta_value as 'Shipping Last Name', 
     pm12.meta_value as 'Shipping Address 1', 
     pm13.meta_value as 'Shipping Address 2', 
     pm14.meta_value as 'Shipping City', 
     pm15.meta_value as 'Shipping State', 
     pm16.meta_value as 'Shipping Postcode', 
     pm17.meta_value as 'Order Shipping' 
    FROM wp_posts 
     LEFT JOIN wp_postmeta AS pm1 ON (wp_posts.ID = pm1.post_id AND pm1.meta_key='_billing_address_1') 
     LEFT JOIN wp_postmeta AS pm2 ON (wp_posts.ID = pm2.post_id AND pm2.meta_key='_billing_address_2') 
     LEFT JOIN wp_postmeta AS pm3 ON (wp_posts.ID = pm3.post_id AND pm3.meta_key='_billing_city') 
     LEFT JOIN wp_postmeta AS pm4 ON (wp_posts.ID = pm4.post_id AND pm4.meta_key='_billing_state') 
     LEFT JOIN wp_postmeta AS pm5 ON (wp_posts.ID = pm5.post_id AND pm5.meta_key='_billing_postcode') 
     LEFT JOIN wp_postmeta AS pm6 ON (wp_posts.ID = pm6.post_id AND pm6.meta_key='_billing_email') 
     LEFT JOIN wp_postmeta AS pm7 ON (wp_posts.ID = pm7.post_id AND pm7.meta_key='_billing_phone') 
     LEFT JOIN wp_postmeta AS pm8 ON (wp_posts.ID = pm8.post_id AND CONCAT_WS(' ',pm8.meta_key='_billing_first_name', pm8.meta_key='_billing_last_name')) 
     LEFT JOIN wp_postmeta AS pm10 ON (wp_posts.ID = pm10.post_id AND pm10.meta_key='_shipping_first_name') 
     LEFT JOIN wp_postmeta AS pm11 ON (wp_posts.ID = pm11.post_id AND pm11.meta_key='_shipping_last_name') 
     LEFT JOIN wp_postmeta AS pm12 ON (wp_posts.ID = pm12.post_id AND pm12.meta_key='_shipping_address_1') 
     LEFT JOIN wp_postmeta AS pm13 ON (wp_posts.ID = pm13.post_id AND pm13.meta_key='_shipping_address_2') 
     LEFT JOIN wp_postmeta AS pm14 ON (wp_posts.ID = pm14.post_id AND pm14.meta_key='_shipping_city') 
     LEFT JOIN wp_postmeta AS pm15 ON (wp_posts.ID = pm15.post_id AND pm15.meta_key='_shipping_state') 
     LEFT JOIN wp_postmeta AS pm16 ON (wp_posts.ID = pm16.post_id AND pm16.meta_key='_shipping_postcode') 
     LEFT JOIN wp_postmeta AS pm17 ON (wp_posts.ID = pm17.post_id AND pm17.meta_key='_order_shipping') 
    WHERE 
     wp_posts.post_type = 'shop_order' AND 
     wp_posts.post_status = 'wc-completed' AND 
     wp_posts.post_date > '2016-08-01 13:13:00' AND 
     wp_posts.post_date < '2017-05-31 13:13:00' 
    GROUP BY wp_posts.ID ORDER BY wp_posts.post_date DESC 

任何幫助，這是極大的讚賞，謝謝

Answer 1

SELECT 
    wp_posts.ID, 
    wp_posts.post_title, 
    pm1.meta_value as 'Billing Address 1', 
    pm2.meta_value as 'Billing Address 2', 
    pm3.meta_value as 'Billing City', 
    pm4.meta_value as 'Billing State', 
    pm5.meta_value as 'Billing Postcode', 
    pm6.meta_value as 'Billing Email', 
    pm7.meta_value as 'Billing Phone', 
    CONCAT_WS(' ',pm9.meta_value,pm8.meta_value) as 'Billing Full Name', 
    pm10.meta_value as 'Shipping First Name', 
    pm11.meta_value as 'Shipping Last Name', 
    pm12.meta_value as 'Shipping Address 1', 
    pm13.meta_value as 'Shipping Address 2', 
    pm14.meta_value as 'Shipping City', 
    pm15.meta_value as 'Shipping State', 
    pm16.meta_value as 'Shipping Postcode', 
    pm17.meta_value as 'Order Shipping' 
FROM wp_posts 
    LEFT JOIN wp_postmeta AS pm1 ON (wp_posts.ID = pm1.post_id AND pm1.meta_key='_billing_address_1') 
    LEFT JOIN wp_postmeta AS pm2 ON (wp_posts.ID = pm2.post_id AND pm2.meta_key='_billing_address_2') 
    LEFT JOIN wp_postmeta AS pm3 ON (wp_posts.ID = pm3.post_id AND pm3.meta_key='_billing_city') 
    LEFT JOIN wp_postmeta AS pm4 ON (wp_posts.ID = pm4.post_id AND pm4.meta_key='_billing_state') 
    LEFT JOIN wp_postmeta AS pm5 ON (wp_posts.ID = pm5.post_id AND pm5.meta_key='_billing_postcode') 
    LEFT JOIN wp_postmeta AS pm6 ON (wp_posts.ID = pm6.post_id AND pm6.meta_key='_billing_email') 
    LEFT JOIN wp_postmeta AS pm7 ON (wp_posts.ID = pm7.post_id AND pm7.meta_key='_billing_phone') 
    LEFT JOIN wp_postmeta AS pm8 ON (wp_posts.ID = pm8.post_id AND pm8.meta_key='_billing_last_name') 
    LEFT JOIN wp_postmeta AS pm9 ON (wp_posts.ID = pm9.post_id AND pm9.meta_key='_billing_first_name') 
    LEFT JOIN wp_postmeta AS pm10 ON (wp_posts.ID = pm10.post_id AND pm10.meta_key='_shipping_first_name') 
    LEFT JOIN wp_postmeta AS pm11 ON (wp_posts.ID = pm11.post_id AND pm11.meta_key='_shipping_last_name') 
    LEFT JOIN wp_postmeta AS pm12 ON (wp_posts.ID = pm12.post_id AND pm12.meta_key='_shipping_address_1') 
    LEFT JOIN wp_postmeta AS pm13 ON (wp_posts.ID = pm13.post_id AND pm13.meta_key='_shipping_address_2') 
    LEFT JOIN wp_postmeta AS pm14 ON (wp_posts.ID = pm14.post_id AND pm14.meta_key='_shipping_city') 
    LEFT JOIN wp_postmeta AS pm15 ON (wp_posts.ID = pm15.post_id AND pm15.meta_key='_shipping_state') 
    LEFT JOIN wp_postmeta AS pm16 ON (wp_posts.ID = pm16.post_id AND pm16.meta_key='_shipping_postcode') 
    LEFT JOIN wp_postmeta AS pm17 ON (wp_posts.ID = pm17.post_id AND pm17.meta_key='_order_shipping') 
WHERE 
    wp_posts.post_type = 'shop_order' AND 
    wp_posts.post_status = 'wc-completed' AND 
    wp_posts.post_date > '2016-08-01 13:13:00' AND 
    wp_posts.post_date < '2017-05-31 13:13:00' 
GROUP BY wp_posts.ID ORDER BY wp_posts.post_date DESC