from pyathena import connect
import pandas as pd
conn = connect(aws_access_key_id='YOUR_ACCESS_KEY_ID',
aws_secret_access_key='YOUR_SECRET_ACCESS_KEY',
s3_staging_dir='s3://YOUR_S3_BUCKET/path/to/',
region_name='us-west-2')
res = pd.read_sql("select * from db_name.tablename",conn)
我该如何在连接框架中指定数据库名称,或者有没有什么解决方法?