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示例表信息
# 作者表 | |
CREATE TABLE `test_author` (`id` int(11) NOT NULL AUTO_INCREMENT COMMENT '主键 ID', | |
`author_name` varchar(255) NOT NULL COMMENT '作者名', | |
`creator` int(11) NOT NULL COMMENT '创建人', | |
`last_updater` int(11) NOT NULL COMMENT '最初更新人', | |
`create_time` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创立工夫', | |
`last_update_time` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新工夫', | |
`delete_flag` int(1) NOT NULL DEFAULT '0' COMMENT '删除标记(0- 默认,1- 删除)', | |
PRIMARY KEY (`id`) | |
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8mb4 COMMENT='作者'; | |
#书籍表 | |
CREATE TABLE `test_book` (`id` int(11) NOT NULL AUTO_INCREMENT COMMENT '主键 ID', | |
`title` varchar(255) NOT NULL COMMENT '题目', | |
`creator` int(11) NOT NULL COMMENT '创建人', | |
`last_updater` int(11) NOT NULL COMMENT '最初更新人', | |
`create_time` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT '创立工夫', | |
`last_update_time` datetime NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT '更新工夫', | |
`delete_flag` int(1) NOT NULL DEFAULT '0' COMMENT '删除标记(0- 默认,1- 删除)', | |
PRIMARY KEY (`id`) | |
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8mb4 COMMENT='书籍'; | |
#关系表 | |
CREATE TABLE `test_topic_paper_related` (`book_id` int(11) NOT NULL COMMENT '书籍 ID', | |
`author_id` int(11) NOT NULL COMMENT '作者 ID', | |
PRIMARY KEY (`book_id`,`author_id`) USING BTREE | |
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='作者 - 书籍关联关系'; |
办法一
SELECT | |
t.id, | |
t.title, | |
t.creator, | |
t.last_updater, | |
t.create_time, | |
t.last_update_time, | |
t.delete_flag, | |
t2.author_name ( | |
SELECT | |
t.id, | |
t.title, | |
t.creator, | |
t.last_updater, | |
t.create_time, | |
t.last_update_time, | |
t.delete_flag | |
FROM | |
test_book AS t | |
WHERE | |
t.id IN ( | |
SELECT | |
book_id | |
FROM | |
test_author_book_related | |
WHERE | |
author_id IN (筛选项 ID 汇合)) | |
AND 其余筛选条件 | |
ORDER BY | |
t.last_update_time DESC, | |
t.id | |
LIMIT 分页信息 | |
) t | |
LEFT JOIN test_author_book_related t1 ON t.id = t1.book_id | |
LEFT JOIN test_author t2 ON t1.author_id = t2.id |
正文完