PostgreSQL has a rich set of native data types available to users. Table 8-shows all the built-in general-purpose data types. In addition, some internally used or deprecated types are available. Numeric types such as integer and floating-point number.
While creating table, for each column, you specify a data type, i. It is designed to handle a range of workloads, from single machines to data warehouses or Web services with many concurrent users. It is the default database for macOS Server, and is also available for Linux, FreeBS OpenBSD. Supported Types and their Mappings.
Note that in addition to the below, enum and composite mappings are documented in a separate page. Note also that several plugins exist to add support for more mappings (e.g. spatial support for PostGIS), these are listed in the Types menu. Początkowo opracowywany na Uniwersytecie Kalifornijskim w Berkeley i opublikowany pod nazwą Ingres. W miarę rozwoju i zwiększania funkcjonalności, baza danych otrzymała nazwy.

A JOIN is a means for combining fields from two tables by using values common to each. Users can add new types with the help of CREATE TYPE command. It also makes queries simpler and more readable. The main example is the daterange data type, which stores as a single value a lower and an upper bound of the range as a single value.