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外键约束

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禾几海
2020-08-04 22:01:02 +08:00
parent d50cd93e55
commit c6a97e4c5b
2 changed files with 5 additions and 3 deletions
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4
src/main/resources/sql/data.sql
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@@ -139,8 +139,8 @@ VALUES (1, 3, 7),
INSERT INTO `comment` (`co_id`, `co_page_path`, `co_content`, `co_date`, `co_status`, `co_pid`, `co_from_author_id`, INSERT INTO `comment` (`co_id`, `co_page_path`, `co_content`, `co_date`, `co_status`, `co_pid`, `co_from_author_id`,
`co_to_author_id`) `co_to_author_id`)
VALUES (1, '/a', 'test comment', '2020-05-22 23:57:17', 0, -1, 1, -1), VALUES (1, '/a', 'test comment', '2020-05-22 23:57:17', 0, -1, 1, null),
(2, '/a', 'test comment', '2020-05-22 23:57:31', 0, -1, 1, 1); (2, '/a', 'test comment', '2020-05-22 23:57:31', 0, -1, 1, null);

4
src/main/resources/sql/schema.sql
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@@ -74,7 +74,9 @@ CREATE TABLE `comment`
`co_status` tinyint not null default 0 comment '评论的状态', `co_status` tinyint not null default 0 comment '评论的状态',
`co_pid` bigint not null default -1 comment '评论/留言的父id', `co_pid` bigint not null default -1 comment '评论/留言的父id',
`co_from_author_id` int not null comment '留言者id', `co_from_author_id` int not null comment '留言者id',
`co_to_author_id` int default null comment '父评论的作者id' `co_to_author_id` int default null comment '父评论的作者id',
foreign key (co_from_author_id) references user (u_id),
foreign key (co_to_author_id) references user (u_id)
) DEFAULT CHARSET = utf8mb4 ) DEFAULT CHARSET = utf8mb4
COLLATE utf8mb4_general_ci,comment '评论/留言表'; COLLATE utf8mb4_general_ci,comment '评论/留言表';