.. index::
   pair: django.contrib.postgres.fields ; RangeOperators
   ! RangeOperators

.. _range_operators:

====================
**Range operators**
====================

.. versionadded:: 3.0

.. class:: RangeOperators

PostgreSQL provides a set of SQL operators that can be used together with the
range data types (see `the PostgreSQL documentation for the full details of
range operators <https://www.postgresql.org/docs/current/
functions-range.html#RANGE-OPERATORS-TABLE>`_).

**This class is meant as a convenient method to avoid typos**.

The operator names overlap with the names of corresponding lookups.

.. code-block:: python

    class RangeOperators:
        EQUAL = '='
        NOT_EQUAL = '<>'
        CONTAINS = '@>'
        CONTAINED_BY = '<@'
        OVERLAPS = '&&'
        FULLY_LT = '<<'
        FULLY_GT = '>>'
        NOT_LT = '&>'
        NOT_GT = '&<'
        ADJACENT_TO = '-|-'