.. highlightlang:: us

.. _pq_nfields:

pq_nfields
==========

.. index:: pq_nfields

.. us.tag  pq_nfields NOTREADYENGLISH New550 postgres

:ref:`pq_nfields` returns the number of columns in the query result.

.. function::  nCols = pq_nfields(res)

.. us.return

**Return Value**

*nCols* is the number of columns.

.. us.params

**Parameters**

.. uparam:: res

   *res* is the res pointer returned by :ref:`pq_exec`.

.. us.example

**Example**

See :ref:`pq_exec`.

.. us.history

**History**

.. list-table::
   :header-rows: 1

   * - Version
     - Description
   * - 5.5.0
     - New

.. seealso::
   :ref:`overview-postgresql`

:sub:`id-36583`