qianfan llms submit prompt does not include ddl_prompt

[xiatain]

When using qianfan as a large model, the Prompt does not include ddl_prompt, that's all
SQL Prompt: [{'role ':' user ',' content ':' 2024 Total Trade with the United States'}]

[yangsir666]

Changing for i, example in question_sql_list: to for i, example in enumerate(question_sql_list):
in get_sql_prompt fixed the issue.