diff options
Diffstat (limited to 'doc/src')
| -rw-r--r-- | doc/src/sgml/ref/pgupgrade.sgml | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/doc/src/sgml/ref/pgupgrade.sgml b/doc/src/sgml/ref/pgupgrade.sgml index 7e1afaf0a50..c896882dd12 100644 --- a/doc/src/sgml/ref/pgupgrade.sgml +++ b/doc/src/sgml/ref/pgupgrade.sgml @@ -792,6 +792,13 @@ psql --username=postgres --file=script.sql postgres is down. </para> + <para> + In <productname>PostgreSQL</productname> 12 and later small tables by + default don't have a free space map, as a space optimization. If you are + upgrading a pre-12 cluster, the free space maps of small tables will + likewise not be transferred to the new cluster. + </para> + </refsect1> <refsect1> |