Script 'python- connect to a database and query for data' for postgresql

python- connect to a database and query for data

Connect to a postgresql database using parameters you specify within the script. Print the results of the query to the console.

Created by matt latham979 449 days ago Viewed 18 times

Submitted by matt latham979 Python3

Created 449 days ago

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import psycopg2

def main():

    db_params = {
        'dbname': 'areallycooldatabase',
        'user': 'anevenbetterusername',
        'password': 'cleartextpassword?whynot!',
        'host': 'ip address or hostname',
        'port': '5432' # 5432 is PostgreSQL default port
    }

    table = 'table' # example table value
    sql = f"SELECT * FROM {table} limit 10;" # draft your SQL command here. Use triple """ if you need extra formatting space.

    # Establish a connection to the PostgreSQL database
    conn = psycopg2.connect(**db_params)
    cursor = conn.cursor()

    cursor.execute(sql)

    results = cursor.fetchall()

    print(results)


`1`	`import psycopg2`
`2`
`3`	`def main():`
`4`
`5`	`db_params = {`
`6`	`'dbname': 'areallycooldatabase',`
`7`	`'user': 'anevenbetterusername',`
`8`	`'password': 'cleartextpassword?whynot!',`
`9`	`'host': 'ip address or hostname',`
`10`	`'port': '5432' # 5432 is PostgreSQL default port`
`11`	`}`
`12`
`13`	`table = 'table' # example table value`
`14`	`sql = f"SELECT * FROM {table} limit 10;" # draft your SQL command here. Use triple """ if you need extra formatting space.`
`15`
`16`	`# Establish a connection to the PostgreSQL database`
`17`	`conn = psycopg2.connect(**db_params)`
`18`	`cursor = conn.cursor()`
`19`
`20`	`cursor.execute(sql)`
`21`
`22`	`results = cursor.fetchall()`
`23`
`24`	`print(results)`
`25`