摘要: SELECT MAX(a1.人数) FROM (SELECT COUNT(category_id) AS "人数",category_id FROM course_category_course category WHERE category.course_id IN ('ZZZ-050','000 阅读全文
posted @ 2019-12-05 14:45 八英里 阅读(626) 评论(0) 推荐(0) 编辑