1. 解释UserWarning: pandas only support sqlalchemy connectable(engine/connection)的含义 这个警告信息表明Pandas库在尝试与数据库进行交互时,只支持使用SQLAlchemy的可连接对象(如Engine或Connection对象)或数据库字符串URI,以及其他特定支持的连接类型(如sqlite3的DBAPI2连接)。如果你尝试使用其他数据库连接库(如pymys...
在使用pandas连接数据库时,如MySQL、PostgreSQL等,有时会遇到告警UserWarning: pandas only supports SQLAlchemy connectable。这通常是因为我们没有使用SQLAlchemy来连接数据库,而是使用了其他方式。为了解决这个问题,我们需要确保使用SQLAlchemy来连接数据库。下面是一个使用SQLAlchemy连接MySQL数据库的示例:首先,确保已经安装...
import pandas as pd from sqlalchemy import create_engine MYSQL_HOST = 'localhost' MYSQL_PORT = '3306' MYSQL_USER = 'root' MYSQL_PASSWORD = '123456' MYSQL_DB = 'cldk_data' engine = create_engine('mysql+pymysql://%s:%s@%s:%s/%s?charset=utf8' % (MYSQL_USER, MYSQL_PASSWORD, MYSQL_...
C:\ProgramData\Miniconda3\lib\site-packages\pandas\io\sql.py:758: UserWarning: pandas only support SQLAlchemy connectable(engine/connection) or database string URI or sqlite3 DBAPI2 connection other DBAPI2 objects are not tested, please consider using SQLAlchemy warnings.warn( 这是在一个相当简单...
data_sql=pd.read_sql_query("select * from goods",engine) print(data_sql) #如果直接用pymysql连接,读取会有一个Warning:pandas only support SQLAlchemy connectable(engine/connection) 4.2 pd.read_sql_query()中的相关参数解读 pd.read_sql_query()的两个参数:sql语句, 数据库连接。
UserWarning: pandas only support SQLAlchemy connectable(engine/connection) ordatabase string URIorsqlite3 DBAPI2 connectionother DBAPI2 objects arenottested, please consider using SQLAlchemy warnings.warn( 新版本的pandas库中con参数使用sqlalchemy库创建的create_engine对象 。创建create_engine对象(格式类似于...
connectable.execute(query)，并且SQLDatabase.connectable只要是sqlalchemy.engine.Connectable的示例（即...
py:761: UserWarning: pandas only support SQLAlchemy connectable(engine/connection) ordatabase string URI or sqlite3 DBAPI2 connectionother DBAPI2 objects are not tested, please consider using SQLAlchemy warnings.warn(Out[126]: idname 0 200 技术 1 201 人力资源 2 202 销售 3 203 运营股票分析...
con : SQLAlchemy connectable (engine/connection) or database string URI or DBAPI2 connection (fallback mode) Using SQLAlchemy makes it possible to use any DB supported by that library. If a DBAPI2 object, only sqlite3 is supported. index_col : string or list of strings, optional, ...
$ python pandas_test.py D:\temp\pandas-issue-57178\pandas_test.py:10: UserWarning: pandas only supports SQLAlchemy connectable (engine/connection) or database string URI or sqlite3 DBAPI2 connection. Other DBAPI2 objects are not tested. Please consider using SQLAlchemy. df.to_sql("Person"...