# comments

## Description

Comments  
Multi-line  
table  
comment

<details>
<summary><strong>Table Definition</strong></summary>

```sql
CREATE TABLE `comments` (
  `id` bigint NOT NULL AUTO_INCREMENT,
  `post_id` bigint NOT NULL,
  `user_id` int NOT NULL,
  `comment` text NOT NULL COMMENT 'Comment\nMulti-line\r\ncolumn\rcomment',
  `post_id_desc` bigint GENERATED ALWAYS AS ((`post_id` * -(1))) VIRTUAL,
  `created` datetime NOT NULL,
  `updated` datetime DEFAULT NULL,
  PRIMARY KEY (`id`),
  UNIQUE KEY `post_id` (`post_id`,`user_id`),
  KEY `comments_user_id_fk` (`user_id`),
  KEY `comments_post_id_user_id_idx` (`post_id`,`user_id`),
  CONSTRAINT `comments_post_id_fk` FOREIGN KEY (`post_id`) REFERENCES `posts` (`id`),
  CONSTRAINT `comments_user_id_fk` FOREIGN KEY (`user_id`) REFERENCES `users` (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci COMMENT='Comments\nMulti-line\r\ntable\rcomment'
```

</details>

## Columns

| # | Name | Type | Default | Nullable | Extra Definition | Children | Parents | Comment |
| - | ---- | ---- | ------- | -------- | ---------------- | -------- | ------- | ------- |
| 1 | id | bigint |  | false | auto_increment |  |  |  |
| 2 | post_id | bigint |  | false |  | [comment_stars](comment_stars.md) | [posts](posts.md) |  |
| 3 | user_id | int |  | false |  | [comment_stars](comment_stars.md) | [users](users.md) |  |
| 4 | comment | text |  | false |  |  |  | Comment<br>Multi-line<br>column<br>comment |
| 5 | post_id_desc | bigint |  | true | GENERATED ALWAYS AS (\`post_id\` * -(1)) VIRTUAL |  |  |  |
| 6 | created | datetime |  | false |  |  |  |  |
| 7 | updated | datetime |  | true |  |  |  |  |

## Constraints

| # | Name | Type | Definition |
| - | ---- | ---- | ---------- |
| 1 | comments_post_id_fk | FOREIGN KEY | FOREIGN KEY (post_id) REFERENCES posts (id) |
| 2 | comments_user_id_fk | FOREIGN KEY | FOREIGN KEY (user_id) REFERENCES users (id) |
| 3 | post_id | UNIQUE | UNIQUE KEY post_id (post_id, user_id) |
| 4 | PRIMARY | PRIMARY KEY | PRIMARY KEY (id) |

## Indexes

| # | Name | Definition |
| - | ---- | ---------- |
| 1 | comments_post_id_user_id_idx | KEY comments_post_id_user_id_idx (post_id, user_id) USING BTREE |
| 2 | comments_user_id_fk | KEY comments_user_id_fk (user_id) USING BTREE |
| 3 | PRIMARY | PRIMARY KEY (id) USING BTREE |
| 4 | post_id | UNIQUE KEY post_id (post_id, user_id) USING BTREE |

## Relations

![er](comments.svg)

---

> Generated by [tbls](https://github.com/k1LoW/tbls)
