community.postgresql.postgresql_copy module – Copy data between a file/program and a PostgreSQL table

Note

This module is part of the community.postgresql collection (version 2.1.5).

You might already have this collection installed if you are using the ansible package. It is not included in ansible-core. To check whether it is installed, run ansible-galaxy collection list.

To install it, use: ansible-galaxy collection install community.postgresql.

To use it in a playbook, specify: community.postgresql.postgresql_copy.

Synopsis

  • Copy data between a file/program and a PostgreSQL table.

Requirements

The below requirements are needed on the host that executes this module.

  • psycopg2

Parameters

Parameter

Comments

ca_cert

aliases: ssl_rootcert

string

Specifies the name of a file containing SSL certificate authority (CA) certificate(s).

If the file exists, the server’s certificate will be verified to be signed by one of these authorities.

columns

aliases: column

list / elements=string

List of column names for the src/dst table to COPY FROM/TO.

copy_from

aliases: from

path

Copy data from a file to a table (appending the data to whatever is in the table already).

Mutually exclusive with copy_to and src.

copy_to

aliases: to

path

Copy the contents of a table to a file.

Can also copy the results of a SELECT query.

Mutually exclusive with copy_from and dst.

db

aliases: login_db

string

Name of database to connect to.

dst

aliases: destination

string

Copy data to dst=tablename from copy_from=/path/to/data.file.

Used with copy_from only.

login_host

string

Host running the database.

If you have connection issues when using localhost, try to use 127.0.0.1 instead.

login_password

string

The password this module should use to establish its PostgreSQL session.

login_unix_socket

string

Path to a Unix domain socket for local connections.

login_user

string

The username this module should use to establish its PostgreSQL session.

Default: “postgres”

options

dictionary

Options of COPY command.

See the full list of available options https://www.postgresql.org/docs/current/sql-copy.html.

port

aliases: login_port

integer

Database port to connect to.

Default: 5432

program

boolean

Mark src/dst as a program. Data will be copied to/from a program.

See block Examples and PROGRAM arg description https://www.postgresql.org/docs/current/sql-copy.html.

Choices:

  • no ← (default)

  • yes

session_role

string

Switch to session_role after connecting. The specified session_role must be a role that the current login_user is a member of.

Permissions checking for SQL commands is carried out as though the session_role were the one that had logged in originally.

src

aliases: source

string

Copy data from copy_from to src=tablename.

Used with copy_to only.

ssl_mode

string

Determines whether or with what priority a secure SSL TCP/IP connection will be negotiated with the server.

See https://www.postgresql.org/docs/current/static/libpq-ssl.html for more information on the modes.

Default of prefer matches libpq default.

Choices:

  • allow

  • disable

  • prefer ← (default)

  • require

  • verify-ca

  • verify-full

trust_input

boolean

added in 0.2.0 of community.postgresql

If no, check whether values of parameters are potentially dangerous.

It makes sense to use no only when SQL injections are possible.

Choices:

  • no

  • yes ← (default)

Notes

Note

  • Supports PostgreSQL version 9.4+.

  • COPY command is only allowed to database superusers.

  • If check_mode=yes, we just check the src/dst table availability and return the COPY query that actually has not been executed.

  • If i(check_mode=yes) and the source has been passed as SQL, the module will execute it and rolled the transaction back but pay attention it can affect database performance (e.g., if SQL collects a lot of data).

  • The default authentication assumes that you are either logging in as or sudo’ing to the postgres account on the host.

  • To avoid “Peer authentication failed for user postgres” error, use postgres user as a become_user.

  • This module uses psycopg2, a Python PostgreSQL database adapter. You must ensure that psycopg2 is installed on the host before using this module.

  • If the remote host is the PostgreSQL server (which is the default case), then PostgreSQL must also be installed on the remote host.

  • For Ubuntu-based systems, install the postgresql, libpq-dev, and python-psycopg2 packages on the remote host before using this module.

  • The ca_cert parameter requires at least Postgres version 8.4 and psycopg2 version 2.4.3.

See Also

See also

COPY command reference

Complete reference of the COPY command documentation.

Examples

- name: Copy text TAB-separated data from file /tmp/data.txt to acme table
  community.postgresql.postgresql_copy:
    copy_from: /tmp/data.txt
    dst: acme

- name: Copy CSV (comma-separated) data from file /tmp/data.csv to columns id, name of table acme
  community.postgresql.postgresql_copy:
    copy_from: /tmp/data.csv
    dst: acme
    columns: id,name
    options:
      format: csv

- name: >
    Copy text vertical-bar-separated data from file /tmp/data.txt to bar table.
    The NULL values are specified as N
  community.postgresql.postgresql_copy:
    copy_from: /tmp/data.csv
    dst: bar
    options:
      delimiter: '|'
      null: 'N'

- name: Copy data from acme table to file /tmp/data.txt in text format, TAB-separated
  community.postgresql.postgresql_copy:
    src: acme
    copy_to: /tmp/data.txt

- name: Copy data from SELECT query to/tmp/data.csv in CSV format
  community.postgresql.postgresql_copy:
    src: 'SELECT * FROM acme'
    copy_to: /tmp/data.csv
    options:
      format: csv

- name: Copy CSV data from my_table to gzip
  community.postgresql.postgresql_copy:
    src: my_table
    copy_to: 'gzip > /tmp/data.csv.gz'
    program: yes
    options:
      format: csv

- name: >
    Copy data from columns id, name of table bar to /tmp/data.txt.
    Output format is text, vertical-bar-separated, NULL as N
  community.postgresql.postgresql_copy:
    src: bar
    columns:
    - id
    - name
    copy_to: /tmp/data.csv
    options:
      delimiter: '|'
      null: 'N'

Return Values

Common return values are documented here, the following are the fields unique to this module:

Key

Description

dst

string

Data destination.

Returned: always

Sample: “/tmp/data.csv”

queries

string

List of executed queries.

Returned: always

Sample: [“COPY test_table FROM \u0027/tmp/data_file.txt\u0027 (FORMAT csv, DELIMITER \u0027,\u0027, NULL \u0027NULL\u0027)”]

src

string

Data source.

Returned: always

Sample: “mytable”

Authors

  • Andrew Klychkov (@Andersson007)