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-rw-r--r--docs/ref/contrib/postgres/aggregates.txt9
1 files changed, 8 insertions, 1 deletions
diff --git a/docs/ref/contrib/postgres/aggregates.txt b/docs/ref/contrib/postgres/aggregates.txt
index 943b0b9373..f9b7be0fd3 100644
--- a/docs/ref/contrib/postgres/aggregates.txt
+++ b/docs/ref/contrib/postgres/aggregates.txt
@@ -61,7 +61,7 @@ General-purpose aggregation functions
``StringAgg``
-------------
-.. class:: StringAgg(expression, delimiter)
+.. class:: StringAgg(expression, delimiter, distinct=False)
Returns the input values concatenated into a string, separated by
the ``delimiter`` string.
@@ -70,6 +70,13 @@ General-purpose aggregation functions
Required argument. Needs to be a string.
+ .. attribute:: distinct
+
+ .. versionadded:: 1.11
+
+ An optional boolean argument that determines if concatenated values
+ will be distinct. Defaults to ``False``.
+
Aggregate functions for statistics
==================================