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-rw-r--r--doc/src/sgml/func.sgml58
1 files changed, 30 insertions, 28 deletions
diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index 1a0b85bb4d7..72f223a0414 100644
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -27141,6 +27141,34 @@ acl | {postgres=arwdDxtm/postgres,foo=r/postgres}
<row>
<entry role="func_table_entry"><para role="func_signature">
<indexterm>
+ <primary>age</primary>
+ </indexterm>
+ <function>age</function> ( <type>xid</type> )
+ <returnvalue>integer</returnvalue>
+ </para>
+ <para>
+ Returns the number of transactions between the supplied
+ transaction id and the current transaction counter.
+ </para></entry>
+ </row>
+
+ <row>
+ <entry role="func_table_entry"><para role="func_signature">
+ <indexterm>
+ <primary>mxid_age</primary>
+ </indexterm>
+ <function>mxid_age</function> ( <type>xid</type> )
+ <returnvalue>integer</returnvalue>
+ </para>
+ <para>
+ Returns the number of multixacts IDs between the supplied
+ multixact ID and the current multixacts counter.
+ </para></entry>
+ </row>
+
+ <row>
+ <entry role="func_table_entry"><para role="func_signature">
+ <indexterm>
<primary>pg_current_xact_id</primary>
</indexterm>
<function>pg_current_xact_id</function> ()
@@ -27282,7 +27310,8 @@ acl | {postgres=arwdDxtm/postgres,foo=r/postgres}
<para>
The internal transaction ID type <type>xid</type> is 32 bits wide and
wraps around every 4 billion transactions. However,
- the functions shown in <xref linkend="functions-pg-snapshot"/> use a
+ the functions shown in <xref linkend="functions-pg-snapshot"/>, except
+ <function>age</function> and <function>mxid_age</function>, use a
64-bit type <type>xid8</type> that does not wrap around during the life
of an installation and can be converted to <type>xid</type> by casting if
required; see <xref linkend="transaction-id"/> for details.
@@ -27364,33 +27393,6 @@ acl | {postgres=arwdDxtm/postgres,foo=r/postgres}
</thead>
<tbody>
- <row>
- <entry role="func_table_entry"><para role="func_signature">
- <indexterm>
- <primary>age</primary>
- </indexterm>
- <function>age</function> ( <type>xid</type> )
- <returnvalue>integer</returnvalue>
- </para>
- <para>
- Returns the number of transactions between the supplied
- transaction id and the current transaction counter.
- </para></entry>
- </row>
-
- <row>
- <entry role="func_table_entry"><para role="func_signature">
- <indexterm>
- <primary>mxid_age</primary>
- </indexterm>
- <function>mxid_age</function> ( <type>xid</type> )
- <returnvalue>integer</returnvalue>
- </para>
- <para>
- Returns the number of multixacts IDs between the supplied
- multixact ID and the current multixacts counter.
- </para></entry>
- </row>
<row>
<entry role="func_table_entry"><para role="func_signature">