file_fdw

CREATE EXTENSION file_fdw;

CREATE EXTENSION file_fdw;

CREATE SERVER file_server FOREIGN DATA WRAPPER file_fdw;

CREATE FOREIGN TABLE csv_data (
  id integer,
  name text,
  value numeric
)
SERVER file_server
OPTIONS (filename '/path/to/data.csv', format 'csv', header 'true');

SELECT * FROM csv_data;

CREATE FOREIGN TABLE pglog (
  log_time timestamp(3) with time zone,
  user_name text,
  database_name text,
  process_id integer,
  connection_from text,
  session_id text,
  session_line_num bigint,
  command_tag text,
  session_start_time timestamp with time zone,
  virtual_transaction_id text,
  transaction_id bigint,
  error_severity text,
  sql_state_code text,
  message text,
  detail text,
  hint text,
  internal_query text,
  internal_query_pos integer,
  context text,
  query text,
  query_pos integer,
  location text,
  application_name text,
  backend_type text,
  leader_pid integer,
  query_id bigint
)
SERVER file_server
OPTIONS (filename 'log/pglog.csv', format 'csv');

CREATE FOREIGN TABLE process_list (
  pid text,
  command text
)
SERVER file_server
OPTIONS (program 'ps aux | tail -n +2', format 'text', delimiter ' ');

CREATE FOREIGN TABLE films (
  code char(5) NOT NULL,
  title text NOT NULL,
  rating text OPTIONS (force_null 'true')
)
SERVER file_server
OPTIONS (filename '/data/films.csv', format 'csv');