PostgreSQL

Overview

PostgreSQL is an open-source, object-relational database known for standards compliance, extensibility, and reliability. It supports advanced features like JSONB, full-text search, window functions, CTEs, and row-level security. PostgreSQL is widely used across startups and enterprises, and is available as a managed service on Amazon RDS, Aurora, Google Cloud SQL, Azure Database, Supabase, and Neon.

Driver

Crate: tokio-postgres
Version: 0.7

Connection fields

Field	Description
Host	Hostname or IP address of the PostgreSQL server.
Port	TCP port the server listens on.
Database	Name of the database to connect to.
User	Authentication username.
Password	Authentication password. Stored in the macOS Keychain.
SSL Mode	One of `disable`, `prefer`, `require`, `verify-ca`, or `verify-full`.
Options	Additional connection parameters as `key1=val1&key2=val2`.

All connections also support an optional SSH tunnel. Configure the bastion host, port, user, and private key file under the SSH section of the connection form. See SSH tunnels for details.

URI format

Instead of filling in each field individually, you can paste a connection URI into the Paste URI field. Arris parses the URI and populates all fields automatically.

text Connection URI

postgres://user:password@host:5432/dbname?sslmode=require

SSL & TLS

PostgreSQL supports five SSL modes. Arris defaults to prefer, which uses SSL if the server supports it but falls back to unencrypted if not.

SSL Mode	Behavior
`disable`	Never use SSL. Not recommended for production.
`prefer`	Use SSL if available, fall back to unencrypted.
`require`	Always use SSL. Fail if the server does not support it.
`verify-ca`	Require SSL and verify the server certificate against a CA.
`verify-full`	Require SSL, verify the CA, and verify the server hostname matches the certificate.

Schema browser

Once connected, Arris fetches the full schema tree and organizes it into groups. The default schema filter is set to public, but you can add or remove schemas from the filter dropdown in the sidebar.

The schema tree displays the following object types, grouped by category:

Tables — regular tables and foreign tables
Views — views and materialized views
Routines — functions and stored procedures
Sequences — auto-increment sequences
Triggers — table-level triggers
Indexes — B-tree, hash, GIN, GiST, and other index types

Double-click any table, view, materialized view, or foreign table to open it in a new tab with browse mode.

Supported SQL commands

Command	Notes
`SELECT`	Query data with `WHERE` filters, `JOIN`s, aggregates, and window functions.
`INSERT`	Insert single or multiple rows.
`UPDATE`	Update existing rows.
`DELETE`	Delete rows.
`CREATE` / `DROP`	Create and drop tables, views, and other schema objects.