The model generates a string of SQL query based on a question and MySQL table schema. You can modify the table schema to match MySQL table schema if you are using different type of SQL database (e.g. PostgreSQL, Oracle, etc). The generated SQL query can be run perfectly on the python SQL connection (e.g. psycopg2, mysql_connector, etc).

Limitations

The question MUST be in english
Keep in mind about the difference in data type naming between MySQL and the other SQL databases
The output always starts with SELECT *, you can't choose which columns to retrieve.
Aggregation function is not supported

Input Example

"""Question: what is What was the result of the election in the Florida 18 district?\nTable: table_1341598_10 (result VARCHAR, district VARCHAR)\nSQL: """

Output Example

"""SELECT * FROM table_1341598_10 WHERE district = "Florida 18""""

How to use

Load model

python

from peft import get_peft_config, get_peft_model, TaskType
from peft import PeftConfig, PeftModel
from transformers import AutoModelForSeq2SeqLM, AutoTokenizer

model_id = "jonathanjordan21/flan-alpaca-base-finetuned-lora-knowSQL"
config = PeftConfig.from_pretrained(model_id)
model_ = AutoModelForSeq2SeqLM.from_pretrained(config.base_model_name_or_path, return_dict=True)
tokenizer = AutoTokenizer.from_pretrained(config.base_model_name_or_path)

model = PeftModel.from_pretrained(model_, model_id)

Model inference

python

question = "server of user id 11 with status active and server id 10"
table = "table_name_77 ( user id INTEGER, status VARCHAR, server id INTEGER )"

test = f"""Question: {question}\nTable: {table}\nSQL: """

p = tokenizer(test, return_tensors='pt')

device = "cuda" if torch.cuda.is_available() else "cpu"
out = model.to(device).generate(**p.to(device),max_new_tokens=50)

print("SQL Query :", tokenizer.batch_decode(out,skip_special_tokens=True)[0])

Performance

Speed Performance

The model inference takes about 2-3 seconds to run in Google Colab Free Tier CPU

Framework versions

PEFT 0.6.2