Use pandas with SQL queries

Pandas and SQL

Situation: You want to further manipulate SQL data in Python. You can use SQLAlchemy and pandas to achieve this.

# Load Libraries
import pandas as pd
from sqlalchemy import create_engine

# for python-dotenv method
import os
from dotenv import load_dotenv   
load_dotenv()    

# db connection
sql_db_connection = os.environ.get("SQL_DB_CONNECTION")  # os.environ.get('postgres:///data.db')

# Create database engine
engine = create_engine(sql_db_connection)

# write query to get records with filter
query = """SELECT *
             FROM table 
            WHERE borough = 'BRONX'
               OR borough = 'BROOKLYN'
"""

# query the database
bronx_query = pd.read_sql(query, engine)

print(bronx_query.unique())  # print distinct records
print(bronx_query.shape())   # print shape of data

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