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58 lines
2.3 KiB
SQL
58 lines
2.3 KiB
SQL
CREATE TABLE posts (
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id BIGINT PRIMARY KEY,
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author_id BIGINT NOT NULL,
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author_role VARCHAR(20) NOT NULL,
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title VARCHAR(500) NOT NULL,
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content TEXT NOT NULL,
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images TEXT[] DEFAULT ARRAY[]::TEXT[],
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tags TEXT[] DEFAULT ARRAY[]::TEXT[],
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linked_order_id BIGINT,
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quoted_post_id BIGINT REFERENCES posts(id),
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like_count INT DEFAULT 0,
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comment_count INT DEFAULT 0,
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pinned BOOLEAN DEFAULT FALSE,
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search_text TEXT GENERATED ALWAYS AS (
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title || ' ' || content
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) STORED,
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created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
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updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
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deleted_at TIMESTAMPTZ
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);
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-- 基础索引
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CREATE INDEX idx_posts_author ON posts(author_id, created_at DESC) WHERE deleted_at IS NULL;
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CREATE INDEX idx_posts_created ON posts(created_at DESC) WHERE deleted_at IS NULL;
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-- 三元组索引用于帖子内容搜索
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CREATE INDEX idx_posts_search_trgm ON posts USING gin(search_text gin_trgm_ops)
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WHERE deleted_at IS NULL;
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-- 全文搜索索引
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CREATE INDEX idx_posts_fulltext ON posts USING gin(
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to_tsvector('simple', title || ' ' || content)
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) WHERE deleted_at IS NULL;
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-- 标签 GIN 索引
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CREATE INDEX idx_posts_tags_gin ON posts USING gin(tags) WHERE deleted_at IS NULL;
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-- 复合索引优化热门排序
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CREATE INDEX idx_posts_hot_score ON posts(
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(like_count * 2 + comment_count) DESC,
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created_at DESC
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) WHERE deleted_at IS NULL;
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-- 置顶+时间索引
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CREATE INDEX idx_posts_pinned_created ON posts(author_id, pinned DESC, created_at DESC)
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WHERE deleted_at IS NULL;
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-- 关联订单索引
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CREATE INDEX idx_posts_linked_order ON posts(linked_order_id)
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WHERE linked_order_id IS NOT NULL AND deleted_at IS NULL;
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-- 图片数组索引
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CREATE INDEX idx_posts_images ON posts USING gin(images) WHERE deleted_at IS NULL;
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CREATE TRIGGER trigger_posts_updated_at
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BEFORE UPDATE ON posts
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FOR EACH ROW
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EXECUTE FUNCTION update_updated_at_column(); |