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-rw-r--r--docs/ref/contrib/gis/functions.txt5
1 files changed, 4 insertions, 1 deletions
diff --git a/docs/ref/contrib/gis/functions.txt b/docs/ref/contrib/gis/functions.txt
index 00dee42c57..728aaf1e71 100644
--- a/docs/ref/contrib/gis/functions.txt
+++ b/docs/ref/contrib/gis/functions.txt
@@ -263,13 +263,16 @@ right-hand rule.
``GeoHash``
===========
-.. class:: GeoHash(expression, **extra)
+.. class:: GeoHash(expression, precision=None, **extra)
*Availability*: PostGIS, SpatiaLite (≥ 4.0, LWGEOM)
Accepts a single geographic field or expression and returns a `GeoHash`__
representation of the geometry.
+The ``precision`` keyword argument controls the number of characters in the
+result.
+
.. versionchanged:: 1.10
SpatiaLite support was added.