https://neon.com/postgresql/tutorial/data-types
Getting Started with PostgreSQL Data Types
In this tutorial, you will learn about PostgreSQL data types including Boolean, character, number, temporal, special types, and array.
postgresql data typesgetting started
https://neon.com/postgresql/tutorial/user-defined-data-types
A Look at PostgreSQL User-defined Data Types
This tutorial shows you how to create PostgreSQL user-defined data type using CREATE DOMAIN and CREATE TYPE statements.
look atdata typespostgresqluserdefined
https://www.postgresql.org/docs/current/isn.html
PostgreSQL: Documentation: 18: F.20. isn — data types for international standard numbers (ISBN,...
F.20. isn — data types for international standard numbers (ISBN, EAN, UPC, etc.) # F.20.1. Data Types F.20.2. Casts F.20.3. Functions …
18 fdata typesinternational standardpostgresqldocumentation
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