Add note about access permission checks by inherited TRUNCATE and LOCK TABLE.
Inherited queries perform access permission checks on the parent
table only. But there are two exceptions to this rule in v12 or before;
TRUNCATE and LOCK TABLE commands through a parent table check
the permissions on not only the parent table but also the children
tables. Previously these exceptions were not documented.
This commit adds the note about these exceptions, into the document.
Back-patch to v9.4. But we don't apply this commit to the master
because commit e6f1e560e4
already got rid of the exception about
inherited TRUNCATE and upcoming commit will do for the exception
about inherited LOCK TABLE.
Author: Amit Langote
Reviewed-by: Fujii Masao
Discussion: https://postgr.es/m/CA+HiwqHfTnMU6SUkyHxCmpHUKk7ERLHCR3vZVq19ZOQBjPBLmQ@mail.gmail.com
This commit is contained in:
parent
d034ab0bb2
commit
bf18402551
|
@ -2323,7 +2323,11 @@ VALUES ('New York', NULL, NULL, 'NY');
|
|||
access privilege checking. This preserves the appearance that the
|
||||
data is (also) in the parent table. Accessing the child tables
|
||||
directly is, however, not automatically allowed and would require
|
||||
further privileges to be granted.
|
||||
further privileges to be granted. Two exceptions to this rule are
|
||||
<command>TRUNCATE</command> and <command>LOCK TABLE</command>,
|
||||
where permissions on the child tables are always checked,
|
||||
whether they are processed directly or recursively via those commands
|
||||
performed on the parent table.
|
||||
</para>
|
||||
|
||||
<sect2 id="ddl-inherit-caveats">
|
||||
|
|
Loading…
Reference in New Issue