29 lines
1.5 KiB
SQL
29 lines
1.5 KiB
SQL
-- 创建互动记录表
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-- 如果表已存在则先删除
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DROP TABLE IF EXISTS public.ak_interactions CASCADE;
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-- 互动记录表
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CREATE TABLE public.ak_interactions (
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id uuid PRIMARY KEY DEFAULT gen_random_uuid(), -- 互动ID
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user_id uuid REFERENCES public.ak_users(id) ON DELETE CASCADE, -- 用户ID (发起互动的用户)
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target_type VARCHAR(32) NOT NULL, -- 目标类型：training_record, assignment_submission, teaching_resource等
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target_id uuid NOT NULL, -- 目标ID (被互动的对象ID)
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interaction_type VARCHAR(32) NOT NULL, -- 互动类型：comment(评论), like(点赞), share(分享)等
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content TEXT, -- 互动内容 (如评论内容，点赞时可为空)
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created_at TIMESTAMP WITH TIME ZONE DEFAULT now(), -- 创建时间
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updated_at TIMESTAMP WITH TIME ZONE DEFAULT now() -- 更新时间
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);
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-- 添加表注释
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COMMENT ON TABLE public.ak_interactions IS '互动记录表';
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COMMENT ON COLUMN public.ak_interactions.target_type IS '目标类型：training_record(训练记录), assignment_submission(作业提交), teaching_resource(教学资源)等';
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COMMENT ON COLUMN public.ak_interactions.interaction_type IS '互动类型：comment(评论), like(点赞), share(分享)等';
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-- 创建索引
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CREATE INDEX idx_interactions_user_id ON public.ak_interactions(user_id);
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CREATE INDEX idx_interactions_target ON public.ak_interactions(target_type, target_id);
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CREATE INDEX idx_interactions_type ON public.ak_interactions(interaction_type);
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-- 验证表是否创建成功
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SELECT 'ak_interactions table created successfully' as result;
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