copy data from csv to postgresql using python

Question

I am on windows 7 64 bit. I have a csv file \'data.csv\'. I want to import data to a postgresql table \'temp_unicommerce_status\' via a python script.

My Script is:

Answer 1

Use the copy_from cursor method

f = open(r'C:\Users\n\Desktop\data.csv', 'r')
cur.copy_from(f, temp_unicommerce_status, sep=',')
f.close()

The file must be passed as an object.

Since you are coping from a csv file it is necessary to specify the separator as the default is a tab character

Answer 2

I know this question has been answered, but here are my two cent. I am adding little more description:

You can use cursor.copy_from method :

First you have to create a table with same no of columns as your csv file.

Example:

My csv looks like this:

Name,       age , college , id_no , country , state   , phone_no

demo_name   22  , bdsu    , 1456  , demo_co , demo_da , 9894321_

First create a table:

import psycopg2
from psycopg2 import Error

connection = psycopg2.connect(user = "demo_user",
                                  password = "demo_pass",
                                  host = "127.0.0.1",
                                  port = "5432",
                                  database = "postgres")
cursor = connection.cursor()


create_table_query = '''CREATE TABLE data_set
(Name  TEXT NOT NULL ,
age  TEXT NOT NULL ,
college  TEXT NOT NULL ,
id_no TEXT NOT NULL ,
country TEXT NOT NULL ,
state TEXT NOT NULL ,
phone_no TEXT NOT NULL);'''

cursor.execute(create_table_query)
connection.commit()

Now you can simply use cursor.copy_from where you need three parameters :

first file object , second table_name , third sep type

you can copy now :

f = open(r'final_data.csv', 'r')
cursor.copy_from(f, 'data_set', sep=',')
f.close()

done