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doc: add docs for age(xid) and mxid_age(xid) 

Reported-by: David Rowley

Discussion: https://postgr.es/m/CAKJS1f_OQpz7rpe-KJmskVxbU06buiXbfonxG3JLB+nGCJ5E=g@mail.gmail.com

Backpatch-through: 16
This commit is contained in:
Bruce Momjian 2023-11-24 14:36:00 -05:00
parent d053a879bb
commit 48b5aa3143
1 changed files with 28 additions and 0 deletions
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28
doc/src/sgml/func.sgml
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@ -25860,6 +25860,34 @@ SELECT collation for ('foo' COLLATE "de_DE");
</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">
<indexterm>