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Connector Postgres

PostgreSQL often referred to as Postgres, is an object-relational database management system.

Postgres uses and extends the SQL language combined with many features that safely store and scales the most complicated data workloads. 

The native data types that are supported include: 

Primitives Integer, Numeric, String, Boolean
Structured Date/Time, Array, Range, UUID
Document JSON/JSONB, XML, Key-value (Hstore) 
Geometry Point, Line, Circle, Polygon 
Customizations Composite, Custom Types

Learn more: about Postgres from PostgreSQL tutorials

The Postgres connector is used to connect and load data from the PostgreSQL database. 

Requirements

Credentials of the database you would like to connect to:

  • Host
  • Port
  • Name of the database
  • Username
  • Password
  • SSH key details (optional, described in more detail below)

If you wish to connect to a database outside of the Meiro environment, you may need a front-end tool like PgAdmin4, Postico, DBeaver or any other front-end (GUI) tool available online. To learn more about these tools, please refer to their respective documentation online. Connecting via a GUI tool is not mandatory, but it may be useful if you want to access the database outside the Meiro environment.

Postgres components work only with CSV tables. Other data formats need to be converted to CSV format by processors.

Learn more: about PostgreSQL  documentation

Data In/Data Out

Data In N/A
Data Out Results will be saved as a CSV table in out/tables.

Learn more: about the folder structure here.

Parameters

DB

Postgres-connector-DB.png

The following  credentials are mandatory:

Host (required)

Name of the server that hosts the database.

Port (required)

The port number you want to access. 

Username

Account name. 

Password

Account password.

Database Name of database

You should be able to get all the credentials from the database administrator. 

SSH

Postgres-connector-SSH-Keys.png

To connect to certain databases (e.g. databases in the internal networks or databases behind firewalls), you may need an additional security layer and an SSH KeyAfter generating the Public and Private keys and sending the Public key to your database administrator, you can connect the database to Meiro. 

Enabled (optional)

Checked if SSH required to connect to the database. 

Private (optional)

Private key. 

Public (optional)

Public key.

SSH Host (optional)

Name of SSH Host.

 

Table

Postgres-connector-Table.png

Name (required)

Name of the table.

Query (required)

A query is a request to access data from a database to manipulate it or retrieve it.

Output Table (required)

The name of the output table you want to load the query. 

Enabled (true/false)

Enabled for this table to be pulled from the database.