33 lines
1.5 KiB
SQL
33 lines
1.5 KiB
SQL
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-- Create AI chat tables
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CREATE TABLE IF NOT EXISTS ai_chat_conversations (
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id SERIAL PRIMARY KEY,
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title VARCHAR(256) NOT NULL DEFAULT '新对话',
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user_id VARCHAR(36) NOT NULL,
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created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
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updated_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
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CONSTRAINT fk_ai_chat_conversations_user_id FOREIGN KEY (user_id) REFERENCES users(user_id) ON DELETE CASCADE
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);
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CREATE INDEX idx_ai_chat_conversations_user_id ON ai_chat_conversations(user_id);
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CREATE TABLE IF NOT EXISTS ai_chat_messages (
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id SERIAL PRIMARY KEY,
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conversation_id INTEGER NOT NULL,
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role VARCHAR(16) NOT NULL,
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content TEXT NOT NULL,
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created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
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CONSTRAINT fk_ai_chat_messages_conversation_id FOREIGN KEY (conversation_id) REFERENCES ai_chat_conversations(id) ON DELETE CASCADE
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);
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CREATE INDEX idx_ai_chat_messages_conversation_id ON ai_chat_messages(conversation_id);
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CREATE INDEX idx_ai_chat_messages_role ON ai_chat_messages(role);
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COMMENT ON TABLE ai_chat_conversations IS 'AI问答对话会话表';
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COMMENT ON TABLE ai_chat_messages IS 'AI问答消息表';
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COMMENT ON COLUMN ai_chat_conversations.title IS '对话标题';
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COMMENT ON COLUMN ai_chat_conversations.user_id IS '用户ID';
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COMMENT ON COLUMN ai_chat_messages.conversation_id IS '对话ID';
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COMMENT ON COLUMN ai_chat_messages.role IS '角色：user 或 assistant';
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COMMENT ON COLUMN ai_chat_messages.content IS '消息内容';
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