diff options
| -rw-r--r-- | doc/src/sgml/func.sgml | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml index 87c3e5a1ee1..4e0715aab13 100644 --- a/doc/src/sgml/func.sgml +++ b/doc/src/sgml/func.sgml @@ -11790,9 +11790,9 @@ SELECT xmlagg(x) FROM (SELECT x FROM test ORDER BY y DESC) AS tab; <primary>lag</primary> </indexterm> <function> - lag(<replaceable class="parameter">value</replaceable> <type>any</> + lag(<replaceable class="parameter">value</replaceable> <type>anyelement</> [, <replaceable class="parameter">offset</replaceable> <type>integer</> - [, <replaceable class="parameter">default</replaceable> <type>any</> ]]) + [, <replaceable class="parameter">default</replaceable> <type>anyelement</> ]]) </function> </entry> <entry> @@ -11802,7 +11802,9 @@ SELECT xmlagg(x) FROM (SELECT x FROM test ORDER BY y DESC) AS tab; returns <replaceable class="parameter">value</replaceable> evaluated at the row that is <replaceable class="parameter">offset</replaceable> rows before the current row within the partition; if there is no such - row, instead return <replaceable class="parameter">default</replaceable>. + row, instead return <replaceable class="parameter">default</replaceable> + (which must be of the same type as + <replaceable class="parameter">value</replaceable>). Both <replaceable class="parameter">offset</replaceable> and <replaceable class="parameter">default</replaceable> are evaluated with respect to the current row. If omitted, @@ -11817,9 +11819,9 @@ SELECT xmlagg(x) FROM (SELECT x FROM test ORDER BY y DESC) AS tab; <primary>lead</primary> </indexterm> <function> - lead(<replaceable class="parameter">value</replaceable> <type>any</> + lead(<replaceable class="parameter">value</replaceable> <type>anyelement</> [, <replaceable class="parameter">offset</replaceable> <type>integer</> - [, <replaceable class="parameter">default</replaceable> <type>any</> ]]) + [, <replaceable class="parameter">default</replaceable> <type>anyelement</> ]]) </function> </entry> <entry> @@ -11829,7 +11831,9 @@ SELECT xmlagg(x) FROM (SELECT x FROM test ORDER BY y DESC) AS tab; returns <replaceable class="parameter">value</replaceable> evaluated at the row that is <replaceable class="parameter">offset</replaceable> rows after the current row within the partition; if there is no such - row, instead return <replaceable class="parameter">default</replaceable>. + row, instead return <replaceable class="parameter">default</replaceable> + (which must be of the same type as + <replaceable class="parameter">value</replaceable>). Both <replaceable class="parameter">offset</replaceable> and <replaceable class="parameter">default</replaceable> are evaluated with respect to the current row. If omitted, |