Compex MySQL Left Join bằng cách sử dụng nhiều mục nhập từ các bảng meta

Đưa tiêu chí tham gia usermeta vào tham gia thay vì đấu tranh với các truy vấn phụ:

SELECT
    ID, user_email, user_login, 
    first_name.meta_value as first_name,
    last_name.meta_value as last_name,
    phone_number.meta_value as phone_number,
    wp_capabilities.meta_value as wp_capabilities 
FROM wp_users
    JOIN wp_usermeta AS wp_capabilities ON wp_capabilities.user_id=ID
        AND wp_capabilities.meta_key='wp_capabilities'
    LEFT JOIN wp_usermeta AS first_name ON first_name.user_id=ID
        AND first_name.meta_key='first_name'
    LEFT JOIN wp_usermeta AS last_name ON last_name.user_id=ID
        AND last_name.meta_key='last_name'
    LEFT JOIN wp_usermeta AS phone_number ON phone_number.user_id=ID
        AND phone_number.meta_key='phone_number'
WHERE
    wp_capabilities.meta_value LIKE '%administrator%'
ORDER BY
    first_name