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pgcmd

Non-interactive PostgreSQL query tool.

By default, it outputs JSON which means that you can process and view the results with tools like jq or catj.

Install

npm install -g pgcmd

Usage

pgcmd -h localhost \
      -u postgres \
      -p p@ssw0rd \
      -d postgres \
      'select * from pg_database where datname = $1' \
      -m template0

If no script is specified, pgcmd reads from the standard input:

echo 'select * from pg_database where datname = $1' | pgcmd -m template0

Output:

[
  {
    "datname": "template0",
    "datdba": 10,
    "encoding": 6,
    "datcollate": "en_US.utf8",
    "datctype": "en_US.utf8",
    "datistemplate": true,
    "datallowconn": false,
    "datconnlimit": -1,
    "datlastsysoid": 13066,
    "datfrozenxid": "562",
    "datminmxid": "1",
    "dattablespace": 1663,
    "datacl": "{=c/postgres,postgres=CTc/postgres}"
  }
]

It can also output CSV:

pgcmd 'select * from pg_database' --csv

Output:

datname,datdba,encoding,datcollate,datctype,datistemplate,datallowconn,datconnlimit,datlastsysoid,datfrozenxid,datminmxid,dattablespace,datacl
postgres,10,6,en_US.utf8,en_US.utf8,,1,-1,13066,562,1,1663,
template1,10,6,en_US.utf8,en_US.utf8,1,1,-1,13066,562,1,1663,"{=c/postgres,postgres=CTc/postgres}"
template0,10,6,en_US.utf8,en_US.utf8,1,,-1,13066,562,1,1663,"{=c/postgres,postgres=CTc/postgres}"

Environment Variables

The following environment variables are supported:

  • PGHOST
  • PGPORT
  • PGUSER
  • PGPASSWORD
  • PGDATABASE

Version History

  • 1.1
    • Added --csv output option.
    • Added support for Node 14. (Thanks darky)
    • Set exit code on errors. (Thanks darky)
  • 1.0
    • Initial release.

Author

Soheil Rashidi

Copyright and License

Copyright 2020 Soheil Rashidi.

Licensed under the The MIT License (the "License"); you may not use this work except in compliance with the License. You may obtain a copy of the License in the LICENSE file, or at:

http://www.opensource.org/licenses/mit-license.php

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

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Non-interactive PostgreSQL query tool.

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