我想寫一個熊貓數據框到postgres表。我做一個連接到數據庫如下: import psycopg2
import pandas as pd
import sqlalchemy
def connect(user, password, db, host='localhost', port=5432):
'''Returns a connection and a metadata o
對於使用SQLAlchemy的自定義查詢某種原因,即時通訊: sql = "SELECT id, shooter_id, value FROM points WHERE match_id = %s ORDER BY value" % match_id
rows = self._session.execute(sql).fetchall()
for (shooter_id, value) in
我需要連接兩個數據庫。默認數據庫是固定的,但另一個是動態的,它基於URL。 例如,如果網址是:yourapp.myweb.com然後第二個數據庫的名字將是yourapp 我嘗試連接到數據庫初始化的.py但它告訴我下面的錯誤 builtins.AssertionError
AssertionError: A setup function was called after the first req