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-rw-r--r--doc/src/sgml/syntax.sgml7
1 files changed, 7 insertions, 0 deletions
diff --git a/doc/src/sgml/syntax.sgml b/doc/src/sgml/syntax.sgml
index 9e87186bb53..863de8852b0 100644
--- a/doc/src/sgml/syntax.sgml
+++ b/doc/src/sgml/syntax.sgml
@@ -2464,6 +2464,13 @@ 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 can currently be used only with regular
+ functions, not with aggregate functions or window functions.
+ </para>
+ </note>
</sect2>
</sect1>