pd.read_sql_query（）TypeError

Question

我正在尝试通过Jupyter Notebook运行我的Postgres数据库查询。我遇到了要与社区分享的TypeError，看看是否有更好的方法执行此代码：

import pandas as pd #version '0.23.3'
import sqlalchemy #version '1.2.15'

from sqlalchemy import create_engine
engine = create_engine('postgresql://username:xxxxxxxx@localhost/DatabaseName')

query_18 = """
SELECT c1.name AS country, region, l.name AS language,
       basic_unit, frac_unit
FROM countries AS c1
FULL JOIN languages AS l
USING (code)
FULL JOIN currencies AS c2
USING (code)
WHERE region LIKE 'M%esia';"""

df = pd.read_sql_query(query_18, engine)
df.head()

这会引发TypeError：

TypeError: 'dict' object does not support indexing

我能够将错误作为query_18中的string format issue发出。我的解决方案是使用%来逃避%%：

示例：

# ...
WHERE region LIKE 'M%%esia';
# ...

执行相同代码是否有更逻辑或更简洁的方式？