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-rw-r--r--doc/src/sgml/syntax.sgml8
1 files changed, 8 insertions, 0 deletions
diff --git a/doc/src/sgml/syntax.sgml b/doc/src/sgml/syntax.sgml
index 8d8a1e91fc3..bf740e05205 100644
--- a/doc/src/sgml/syntax.sgml
+++ b/doc/src/sgml/syntax.sgml
@@ -2464,6 +2464,14 @@ SELECT concat_lower_or_upper('Hello', 'World', uppercase := true);
having numerous parameters that have default values, named or mixed
notation can save a great deal of writing and reduce chances for error.
</para>
+
+ <note>
+ <para>
+ Named and mixed call notations currently cannot be used when calling an
+ aggregate function (but they do work when an aggregate function is used
+ as a window function).
+ </para>
+ </note>
</sect2>
</sect1>