How to import CSV file data into a PostgreSQL table?

Question

How can I write a stored procedure that imports data from a CSV file and populates the table?

Answer 1

How to import CSV file data into a PostgreSQL table?

steps:

1. Need to connect postgresql database in terminal

   psql -U postgres -h localhost
   

2. Need to create database

   create database mydb;
   

3. Need to create user

   create user siva with password 'mypass';
   

4. Connect with database

   \c mydb;
   

5. Need to create schema

   create schema trip;
   

6. Need to create table

   create table trip.test(VendorID int,passenger_count int,trip_distance decimal,RatecodeID int,store_and_fwd_flag varchar,PULocationID int,DOLocationID int,payment_type decimal,fare_amount decimal,extra decimal,mta_tax decimal,tip_amount decimal,tolls_amount int,improvement_surcharge decimal,total_amount
   );
   

7. Import csv file data to postgresql

   COPY trip.test(VendorID int,passenger_count int,trip_distance decimal,RatecodeID int,store_and_fwd_flag varchar,PULocationID int,DOLocationID int,payment_type decimal,fare_amount decimal,extra decimal,mta_tax decimal,tip_amount decimal,tolls_amount int,improvement_surcharge decimal,total_amount) FROM '/home/Documents/trip.csv' DELIMITER ',' CSV HEADER;
   

8. Find the given table data

   select * from trip.test;