Data types in PostgreSQL are the different kinds of data items that PostgreSQL supports. PostgreSQL supports a rich set of native data types (up to 43) that allow users to add all kinds of data to a database. If a data type isn’t supplied, it can be created using the CREATE TYPE command.
The most common data types in PostgreSQL are given in this table:
| S/N | Data Type | Aliases | Description |
|---|---|---|---|
| 1 | bigint | int8 | signed eight-byte integer |
| 2 | boolean | bool | logical Boolean (true/false) |
| 3 | date | calendar date (year, month, day) | |
| 4 | integer | int, int4 | signed four-byte integer |
| 5 | double precision | float8 | double precision floating-point number (8 bytes) |
| 6 | character varying [ (n) ] | ||
| 7 | text | variable-length character string | |
| 8 | uuid | universally unique identifier | |