https://github.com/harobed/poc-postgresql-plsql-fdw-trigger

This is a POC to test postgres_fdw and Trigger Procedures to insert some datas on remote Postgresql database when data are inserted on local database.
https://github.com/harobed/poc-postgresql-plsql-fdw-trigger

poc postgresql triggers

Last synced: 3 months ago
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This is a POC to test postgres_fdw and Trigger Procedures to insert some datas on remote Postgresql database when data are inserted on local database.

• Host: GitHub
• URL: https://github.com/harobed/poc-postgresql-plsql-fdw-trigger
• Owner: harobed
• Created: 2018-02-26T16:52:09.000Z (almost 8 years ago)
• Default Branch: master
• Last Pushed: 2018-02-26T16:57:12.000Z (almost 8 years ago)
• Last Synced: 2025-01-28T11:45:59.514Z (12 months ago)
• Topics: poc, postgresql, triggers
• Language: PLpgSQL
• Size: 1.95 KB
• Stars: 2
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
This is a POC to test:

* [postgres_fdw](https://www.postgresql.org/docs/9.6/static/postgres-fdw.html)

* and [Trigger Procedures](https://www.postgresql.org/docs/9.6/static/plpgsql-trigger.html)

to insert some datas on remote [Postgresql](https://en.wikipedia.org/wiki/PostgreSQL) when data are

inserted on local database.

```

$ docker-compose up -d

```

Drop databases:

```

$ docker-compose exec db1 su postgres -c "dropdb db1 | true; createdb db1"; docker-compose exec db2 su postgres -c "dropdb db2 | true; createdb db2"

```

Create two databases:

```

$ cat db1_create.sql | docker exec -i --user postgres `docker-compose ps -q db1` psql db1

$ cat db2_create.sql | docker exec -i --user postgres `docker-compose ps -q db2` psql db2

```

Insert data:

```

$ cat db1_insert.sql | docker exec -i --user postgres `docker-compose ps -q db1` psql db1

```

See data inserted by trigger on `db2`:

```

$ echo "select * from t2;" | docker exec -i --user postgres `docker-compose ps -q db2` psql db2                                                                                                                 id | field2

----+--------

 22 | row1

 23 | row2

 24 | row3

(3 rows)

```

See list foreign tables:

```

docker exec -it --user postgres `docker-compose ps -q db1` psql db1

psql (9.6.6)

Type "help" for help.

db1=# \det

 List of foreign tables

 Schema | Table | Server

--------+-------+--------

 public | t2    | db2

(1 row)

```

http://paquier.xyz/postgresql-2/postgres-9-4-feature-highlight-trigger-foreign-tables/