我有以下查询:我刚刚注意到当他们有 0 时没有汇总用户的计数item_count
。我曾尝试调整此查询,因为我之前犯过此错误,但不是这种更复杂的查询,我需要如何调整它才能显示用户的 item_count 即使为 0?
SELECT u.ID AS user_id,
u.date_expired AS user_date_expired,
u.first_name AS first_name,
u.last_name AS last_name,
COUNT(i.id) AS item_count
FROM `user` `u`
LEFT JOIN `item` `i` ON i.recruiter_id = u.id
WHERE ((`u`.`id` IN ('15', '2', 13)) AND (i.date_added >
DATE_SUB(u.date_expired, INTERVAL 30 DAY)))
GROUP BY `u`.`id`
谢谢
强尼