diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index 779c368a102..0d614024a78 100644
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -10603,9 +10603,9 @@ SELECT xmlagg(x) FROM (SELECT x FROM test ORDER BY y DESC) AS tab;
lag
- lag(value any
+ lag(value anyelement
[, offset integer
- [, default any ]])
+ [, default anyelement ]])
@@ -10615,7 +10615,9 @@ SELECT xmlagg(x) FROM (SELECT x FROM test ORDER BY y DESC) AS tab;
returns value evaluated at
the row that is offset
rows before the current row within the partition; if there is no such
- row, instead return default.
+ row, instead return default
+ (which must be of the same type as
+ value).
Both offset and
default are evaluated
with respect to the current row. If omitted,
@@ -10630,9 +10632,9 @@ SELECT xmlagg(x) FROM (SELECT x FROM test ORDER BY y DESC) AS tab;
lead
- lead(value any
+ lead(value anyelement
[, offset integer
- [, default any ]])
+ [, default anyelement ]])
@@ -10642,7 +10644,9 @@ SELECT xmlagg(x) FROM (SELECT x FROM test ORDER BY y DESC) AS tab;
returns value evaluated at
the row that is offset
rows after the current row within the partition; if there is no such
- row, instead return default.
+ row, instead return default
+ (which must be of the same type as
+ value).
Both offset and
default are evaluated
with respect to the current row. If omitted,