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---
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tags:
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- text-to-sql
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- qwen
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- tencent-trac3
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- fine-tuned
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license: apache-2.0
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---
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# wexhi/trac3_sql
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## 模型描述
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这是一个基于 **Qwen** 微调的**全量模型**,专门用于 SQL 生成任务(Text-to-SQL)。
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训练数据来自 Tencent TRAC3 数据集,采用**记忆化训练策略**,目标是在训练集上达到 100% 准确率。
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## 模型类型
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- **类型**: Full Fine-tuned Model
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- **架构**: Qwen3ForCausalLM
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- **词汇表大小**: 151936
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- **大小**: 1152.06 MB
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## 使用方法
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### 1. 安装依赖
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```bash
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pip install transformers torch
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```
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### 2. 加载模型
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```python
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from transformers import AutoTokenizer, AutoModelForCausalLM
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model = AutoModelForCausalLM.from_pretrained(
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"wexhi/trac3_sql",
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torch_dtype="auto",
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device_map="auto",
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trust_remote_code=True,
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)
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tokenizer = AutoTokenizer.from_pretrained(
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"wexhi/trac3_sql",
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trust_remote_code=True,
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)
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```
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### 3. 生成 SQL
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```python
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messages = [
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{"role": "system", "content": "You are a SQL generator. Generate SQL in this format:\n```sql\n...\n```"},
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{"role": "user", "content": "ID: 1\n\nQuestion:\nWhat is the total revenue?"}
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]
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prompt = tokenizer.apply_chat_template(
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messages,
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tokenize=False,
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add_generation_prompt=True,
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enable_thinking=False,
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)
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inputs = tokenizer(prompt, return_tensors="pt").to(model.device)
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outputs = model.generate(**inputs, max_new_tokens=512, temperature=0.0)
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response = tokenizer.decode(outputs[0][inputs['input_ids'].shape[1]:], skip_special_tokens=True)
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print(response)
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```
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### 4. 使用 vLLM 加速(推荐)
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```bash
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pip install vllm
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```
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```python
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from vllm import LLM, SamplingParams
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llm = LLM(model="wexhi/trac3_sql", trust_remote_code=True)
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sampling_params = SamplingParams(temperature=0.0, max_tokens=512)
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prompts = [...] # 批量 prompts
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outputs = llm.generate(prompts, sampling_params)
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```
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## 训练细节
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- **训练方法**: Supervised Fine-Tuning (SFT)
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- **训练策略**: 记忆化训练(Memorization)
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- **训练数据**: Tencent TRAC3 数据集(61 个样本)
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- **输入格式**: `ID: {sql_id}\n\nQuestion:\n{question}`
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- **输出格式**: ````sql\n{sql}\n```
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- **优化目标**: 100% 训练集准确率
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## 局限性
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⚠️ **重要提示**: 此模型专门针对训练集进行了过拟合优化,**不适用于分布外(OOD)数据**。
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- ✅ 对于训练集中的问题,能够准确生成 SQL
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- ❌ 对于未见过的问题,可能无法正确泛化
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## License
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Apache 2.0
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## 引用
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如果使用了此模型,请引用:
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```
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Tencent TRAC3 Challenge - Text-to-SQL Fine-tuned Model
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```
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---
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*Created: 2025-11-24*
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