44 lines
1.6 KiB
SQL
44 lines
1.6 KiB
SQL
-- 1. 创建足迹表
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CREATE TABLE IF NOT EXISTS ml_user_footprints (
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id UUID DEFAULT uuid_generate_v4() PRIMARY KEY,
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user_id UUID NOT NULL DEFAULT auth.uid(),
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product_id UUID NOT NULL, -- 如果 ml_products 表存在，可以改为: product_id UUID NOT NULL REFERENCES ml_products(id) ON DELETE CASCADE
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created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
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updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
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UNIQUE(user_id, product_id) -- 复合唯一索引，防止同一商品重复记录
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);
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-- 2. 添加表注释
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COMMENT ON TABLE ml_user_footprints IS '用户浏览足迹表';
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COMMENT ON COLUMN ml_user_footprints.user_id IS '用户ID';
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COMMENT ON COLUMN ml_user_footprints.product_id IS '商品ID';
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COMMENT ON COLUMN ml_user_footprints.updated_at IS '最后访问时间';
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-- 3. 启用行级安全策略 (RLS)
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ALTER TABLE ml_user_footprints ENABLE ROW LEVEL SECURITY;
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-- 4. 添加安全策略 (增删改查仅限本人)
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-- 查看策略
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CREATE POLICY "Users can view their own footprints"
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ON ml_user_footprints FOR SELECT
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USING (auth.uid() = user_id);
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-- 插入策略
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CREATE POLICY "Users can insert their own footprints"
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ON ml_user_footprints FOR INSERT
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WITH CHECK (auth.uid() = user_id);
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-- 更新策略
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CREATE POLICY "Users can update their own footprints"
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ON ml_user_footprints FOR UPDATE
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USING (auth.uid() = user_id);
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-- 删除策略
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CREATE POLICY "Users can delete their own footprints"
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ON ml_user_footprints FOR DELETE
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USING (auth.uid() = user_id);
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-- 5. 建立索引以优化查询速度
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CREATE INDEX IF NOT EXISTS idx_footprints_user_updated
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ON ml_user_footprints (user_id, updated_at DESC);
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