< Currently, to protect against partial disk page writes, we write the
> Currently, to protect against partial disk page writes, we write
877c877
< * Turn off after-change writes if fsync is disabled
> * Turn off full page writes if fsync is disabled
end of the block:
<<label>>
begin
...
end label;
Similarly for loops. This is per PL/SQL. Update the documentation and
add regression tests. Patch from Pavel Stehule, code review by Neil
Conway.
< o Replace crude DELETE FROM method of pg_dumpall for cleaning of
< roles with separate DROP commands
> o Replace crude DELETE FROM method of pg_dumpall --clean for
> cleaning of roles with separate DROP commands
< * Allow limits on per-db/user connections
> * Allow limits on per-db/role connections
< * Prevent default re-use of sysids for dropped users and roles
<
< Currently, if a user is removed while he still owns objects, a new
< user given might be given their user id and inherit the
< previous users objects.
<
450c444
< * Add COMMENT ON for all cluster global objects (users, roles, databases
> * Add COMMENT ON for all cluster global objects (roles, databases
609c603
< users and roles with separate DROP commands
> roles with separate DROP commands
< * Prevent default re-use of sysids for dropped users and groups
> * Prevent default re-use of sysids for dropped users and roles
450c450
< * Add COMMENT ON for all cluster global objects (users, groups, databases
> * Add COMMENT ON for all cluster global objects (users, roles, databases
609c609
< users and groups with separate DROP commands
> users and roles with separate DROP commands
and pg_auth_members. There are still many loose ends to finish in this
patch (no documentation, no regression tests, no pg_dump support for
instance). But I'm going to commit it now anyway so that Alvaro can
make some progress on shared dependencies. The catalog changes should
be pretty much done.
with main, avoid using a SQL-defined SQLSTATE for what is most definitely
not a SQL-compatible error condition, fix documentation omissions,
adhere to message style guidelines, don't use two GUC_REPORT variables
when one is sufficient. Nothing done about pg_dump issues.
literally.
Add GUC variables:
"escape_string_warning" - warn about backslashes in non-E strings
"escape_string_syntax" - supports E'' syntax?
"standard_compliant_strings" - treats backslashes literally in ''
Update code to use E'' when escapes are used.
should fix the recent reports of "index is not a btree" failures,
as well as preventing a more obscure race condition involving changes
to a template database just after copying it with CREATE DATABASE.
> * Add NUMERIC division operator that doesn't round?
>
> Currently NUMERIC _rounds_ the result to the specified precision.
> This means division can return a result that multiplied by the
> divisor is greater than the dividend, e.g. this returns a value > 10:
>
> SELECT (10::numeric(2,0) / 6::numeric(2,0))::numeric(2,0) * 6;
>
> The positive modulus result returned by NUMERICs might be considered
> inaccurate, in one sense.
>
to the existing X-direction tests. An rtree class now includes 4 actual
2-D tests, 4 1-D X-direction tests, and 4 1-D Y-direction tests.
This involved adding four new Y-direction test operators for each of
box and polygon; I followed the PostGIS project's lead as to the names
of these operators.
NON BACKWARDS COMPATIBLE CHANGE: the poly_overleft (&<) and poly_overright
(&>) operators now have semantics comparable to box_overleft and box_overright.
This is necessary to make r-tree indexes work correctly on polygons.
Also, I changed circle_left and circle_right to agree with box_left and
box_right --- formerly they allowed the boundaries to touch. This isn't
actually essential given the lack of any r-tree opclass for circles, but
it seems best to sync all the definitions while we are at it.
< * Allow administrators to safely terminate individual sessions
<
< Right now, SIGTERM will terminate a session, but it is treated as
< though the postmaster has paniced and shared memory might not be
< cleaned up properly. A new signal is needed for safe termination
< because backends must first do a query cancel, then exit once they
< have run the query cancel cleanup routine.
<
> * Allow administrators to safely terminate individual sessions either
> via an SQL function or SIGTERM
in the database. The old behavior (reindex system catalogs only) is now
available as REINDEX SYSTEM. I did not add the complementary REINDEX USER
case since there did not seem to be consensus for this, but it would be
trivial to add later. Per recent discussions.
argument list contains parameter symbols ($n) declared as type VOID,
discard these arguments. This allows the driver to avoid renumbering
mixed IN and OUT argument placeholders (the JDBC syntax involves writing
? for both IN and OUT parameters, but on the server side we don't think
that OUT parameters are arguments). This doesn't break any currently-
useful cases since VOID is not used as an input argument type.
using the recently added lo_create() function. The restore logic in
pg_restore is greatly simplified as well, since there's no need anymore
to try to adjust database references to match a new set of blob OIDs.
unlike template0 and template1 does not have any special status in
terms of backend functionality. However, all external utilities such
as createuser and createdb now connect to "postgres" instead of
template1, and the documentation is changed to encourage people to use
"postgres" instead of template1 as a play area. This should fix some
longstanding gotchas involving unexpected propagation of database
objects by createdb (when you used template1 without understanding
the implications), as well as ameliorating the problem that CREATE
DATABASE is unhappy if anyone else is connected to template1.
Patch by Dave Page, minor editing by Tom Lane. All per recent
pghackers discussions.
Bruce Momjian