This chapter describes the available localization features from the point of view of the administrator. PostgreSQL supports two localization facilities:
Using the locale features of the operating system to provide locale-specific collation order, number formatting, translated messages, and other aspects. This is covered in Section 22.1 and Section 22.2.
Providing a number of different character sets to support storing text in all kinds of languages, and providing character set translation between client and server. This is covered in Section 22.3.
Read the upstream documentation. For corrections, first check the current version.