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44 lines
2.1 KiB
Go
44 lines
2.1 KiB
Go
-- # 书籍评论表
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--
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-- ## 基本信息
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--
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-- 模块：book
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-- 表名：book_comment
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-- 模型：model/book/book_comment.go
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-- 迁移接入：initialize/gorm_biz.go
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-- 删除策略：硬删表
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-- 评论状态字典：book_comment_status
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-- 职责：承载书籍、章节和文本行三级评论定位信息，并冗余维护评论点赞聚合值。
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CREATE TABLE book_comment (
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id bigserial PRIMARY KEY,
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created_at timestamp with time zone NOT NULL DEFAULT CURRENT_TIMESTAMP,
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updated_at timestamp with time zone NOT NULL DEFAULT CURRENT_TIMESTAMP,
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member_user_id bigint NOT NULL,
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book_id bigint NOT NULL,
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chapter_id bigint NOT NULL DEFAULT 0 CHECK (chapter_id >= 0),
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line_index integer NOT NULL DEFAULT 0 CHECK (line_index >= 0),
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content text NOT NULL,
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like_count bigint NOT NULL DEFAULT 0 CHECK (like_count >= 0),
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comment_status varchar(32) NOT NULL DEFAULT 'normal',
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CHECK ((chapter_id = 0 AND line_index = 0) OR (chapter_id > 0 AND line_index >= 0))
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);
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COMMENT ON TABLE book_comment IS '书籍评论表';
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COMMENT ON COLUMN book_comment.id IS '主键';
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COMMENT ON COLUMN book_comment.created_at IS '创建时间';
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COMMENT ON COLUMN book_comment.updated_at IS '更新时间';
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COMMENT ON COLUMN book_comment.member_user_id IS '评论用户的会员 ID';
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COMMENT ON COLUMN book_comment.book_id IS '所属书籍 ID';
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COMMENT ON COLUMN book_comment.chapter_id IS '评论目标章节 ID，0 表示整本书';
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COMMENT ON COLUMN book_comment.line_index IS '评论目标文本行下标，0 表示整章或整本书';
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COMMENT ON COLUMN book_comment.content IS '评论正文内容';
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COMMENT ON COLUMN book_comment.like_count IS '评论点赞聚合值';
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COMMENT ON COLUMN book_comment.comment_status IS '评论状态字典值，对应 book_comment_status';
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CREATE INDEX idx_book_comment_book_id ON book_comment (book_id);
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CREATE INDEX idx_book_comment_book_id_chapter_id_line_index ON book_comment (book_id, chapter_id, line_index);
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CREATE INDEX idx_book_comment_member_user_id ON book_comment (member_user_id);
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CREATE INDEX idx_book_comment_comment_status ON book_comment (comment_status);
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CREATE INDEX idx_book_comment_created_at ON book_comment (created_at);
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