CSV Foreign Data Wrapper¶

Purpose¶

This fdw can be used to access data stored in CSV files. Each column defined in the table will be mapped, in order, against columns in the CSV file.

Supports: ✓✗✗✗

Dependencies¶

No dependency outside the standard python distribution.

Options¶

filename (required): The full path to the CSV file containing the data. This file must be readable to the postgres user.
delimiter: The CSV delimiter (defaults to ,).
quotechar: The CSV quote character (defaults to ").
skip_header: The number of lines to skip (defaults to 0).

Usage example¶

Supposing you want to parse the following CSV file, located in /tmp/test.csv:

Year,Make,Model,Length
1997,Ford,E350,2.34
2000,Mercury,Cougar,2.38

You can declare the following table:

CREATE SERVER csv_srv foreign data wrapper multicorn options (
    wrapper 'multicorn.csvfdw.CsvFdw'
);


create foreign table csvtest (
       year numeric,
       make character varying,
       model character varying,
       length numeric
) server csv_srv options (
       filename '/tmp/test.csv',
       skip_header '1',
       delimiter ',');

select * from csvtest;

 year |  make   | model  | length
------+---------+--------+--------
 1997 | Ford    | E350   |   2.34
 2000 | Mercury | Cougar |   2.38
(2 lines)