Export data from PostgreSQL to JSON via command line on MacOS

Want to export PostgreSQL data to JSON Lines (JSONL) file via Command Line Interface (CLI) on MacOS?

Using pg-cmd, Command Line Interface (CLI) client for PostgreSQL, you can unload PostgreSQL data to JSON easily and fast. Direct Interaction or Scripting and Automation.

• No need to install PostgreSQL client library.
• Convenient to deploy to cloud. No need to run installation file, just uncompress and run, immediately.
• Commands are entered into a terminal or command prompt, accessed from local or remote (like SSH).
• Support Windows, Linux, and MacOS.

Download pg-cmd Macos version
pg-cmd.darwin-amd64.zip
pg-cmd.darwin-arm64.zip

JSON Lines text format, also called newline-delimited JSON (NDJSON), or Line-delimited JSON (LDJSON). JSON Lines files may be saved with the file extension .jsonl, *.ndjson, *.ldjson.

Export PostgreSQL data to JSON via command line on MacOS

1. Unload Table.

1) In interactive mode:

pg-cmd> unload table=jobs datafile=e:\temp\tables\jobs.json filetype=json;

2) In batch mode:

pg-cmd dsn="pan:withdata@192.168.0.102/test" task=unload table=jobs datafile=e:\temp\tables\jobs.json filetype=json quit=y

2. Unload Query.

1) In interactive mode:

pg-cmd> unload query="select job_id,job_title from jobs"
     >  datafile=e:\temp\tables\jobs_part.json
     >  filetype=json;

2) In batch mode:

pg-cmd dsn="pan:withdata@192.168.0.102/test" task=unload query="select job_id,job_title from jobs" datafile=e:\temp\tables\jobs_part.json filetype=json quit=y

3. Unload All Tables.

1) In interactive mode:

pg-cmd> unload table=all folder=e:\temp\tables filetype=json;

2) In batch mode:

pg-cmd dsn="pan:withdata@192.168.0.102/test" task=unload table=all folder=e:\temp\tables filetype=json quit=y

See parameters detail.

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