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Previously, the internal name of a PL/Tcl function was just
"__PLTcl_proc_NNNN", where NNNN is the function OID. That's pretty
unhelpful when reading an error report. Plus it prevents us from
testing the CONTEXT output for PL/Tcl errors, since the OIDs shown
in the regression tests wouldn't be stable.
Instead, base the internal name on the result of format_procedure(),
which will be unique in most cases. For the edge cases where it's
not, we can append the function OID to make it unique.
Sadly, the pltcl_trigger.sql test script still has to suppress the
context reports, because they'd include trigger arguments which
contain relation OIDs per PL/Tcl's longstanding API for triggers.
I had to modify one existing test case to throw a different error
than before, because I found that Tcl 8.5 and Tcl 8.6 spell the
context message for the original error slightly differently.
We might have to make more adjustments in that vein once this
gets wider testing.
Patch by me; thanks to Pavel Stehule for the idea to use
format_procedure() rather than just the proname.
Discussion: https://postgr.es/m/890581.1717609350@sss.pgh.pa.us
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The trigger tests for PL/Tcl were spread aroud pltcl_setup.sql and
pltcl_queries.sql, mixed with other tests, which makes them hard to
follow and edit. Move all the trigger-related pieces to a new file
pltcl_trigger.sql. This also makes the test setup more similar to
plperl and plpython.
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Previously tables declared WITH OIDS, including a significant fraction
of the catalog tables, stored the oid column not as a normal column,
but as part of the tuple header.
This special column was not shown by default, which was somewhat odd,
as it's often (consider e.g. pg_class.oid) one of the more important
parts of a row. Neither pg_dump nor COPY included the contents of the
oid column by default.
The fact that the oid column was not an ordinary column necessitated a
significant amount of special case code to support oid columns. That
already was painful for the existing, but upcoming work aiming to make
table storage pluggable, would have required expanding and duplicating
that "specialness" significantly.
WITH OIDS has been deprecated since 2005 (commit ff02d0a05280e0).
Remove it.
Removing includes:
- CREATE TABLE and ALTER TABLE syntax for declaring the table to be
WITH OIDS has been removed (WITH (oids[ = true]) will error out)
- pg_dump does not support dumping tables declared WITH OIDS and will
issue a warning when dumping one (and ignore the oid column).
- restoring an pg_dump archive with pg_restore will warn when
restoring a table with oid contents (and ignore the oid column)
- COPY will refuse to load binary dump that includes oids.
- pg_upgrade will error out when encountering tables declared WITH
OIDS, they have to be altered to remove the oid column first.
- Functionality to access the oid of the last inserted row (like
plpgsql's RESULT_OID, spi's SPI_lastoid, ...) has been removed.
The syntax for declaring a table WITHOUT OIDS (or WITH (oids = false)
for CREATE TABLE) is still supported. While that requires a bit of
support code, it seems unnecessary to break applications / dumps that
do not use oids, and are explicit about not using them.
The biggest user of WITH OID columns was postgres' catalog. This
commit changes all 'magic' oid columns to be columns that are normally
declared and stored. To reduce unnecessary query breakage all the
newly added columns are still named 'oid', even if a table's column
naming scheme would indicate 'reloid' or such. This obviously
requires adapting a lot code, mostly replacing oid access via
HeapTupleGetOid() with access to the underlying Form_pg_*->oid column.
The bootstrap process now assigns oids for all oid columns in
genbki.pl that do not have an explicit value (starting at the largest
oid previously used), only oids assigned later by oids will be above
FirstBootstrapObjectId. As the oid column now is a normal column the
special bootstrap syntax for oids has been removed.
Oids are not automatically assigned during insertion anymore, all
backend code explicitly assigns oids with GetNewOidWithIndex(). For
the rare case that insertions into the catalog via SQL are called for
the new pg_nextoid() function can be used (which only works on catalog
tables).
The fact that oid columns on system tables are now normal columns
means that they will be included in the set of columns expanded
by * (i.e. SELECT * FROM pg_class will now include the table's oid,
previously it did not). It'd not technically be hard to hide oid
column by default, but that'd mean confusing behavior would either
have to be carried forward forever, or it'd cause breakage down the
line.
While it's not unlikely that further adjustments are needed, the
scope/invasiveness of the patch makes it worthwhile to get merge this
now. It's painful to maintain externally, too complicated to commit
after the code code freeze, and a dependency of a number of other
patches.
Catversion bump, for obvious reasons.
Author: Andres Freund, with contributions by John Naylor
Discussion: https://postgr.es/m/20180930034810.ywp2c7awz7opzcfr@alap3.anarazel.de
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Since PL/Tcl does little with SQL types internally, this is just a
matter of making it work with composite-domain function arguments
and results.
In passing, make it allow RECORD-type arguments --- that's a trivial
change that nobody had bothered with up to now.
Discussion: https://postgr.es/m/4206.1499798337@sss.pgh.pa.us
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Commit 59702716 added transition table support to PL/pgsql so that
SQL queries in trigger functions could access those transient
tables. In order to provide the same level of support for PL/perl,
PL/python and PL/tcl, refactor the relevant code into a new
function SPI_register_trigger_data. Call the new function in the
trigger handler of all four PLs, and document it as a public SPI
function so that authors of out-of-tree PLs can do the same.
Also get rid of a second QueryEnvironment object that was
maintained by PL/pgsql. That was previously used to deal with
cursors, but the same approach wasn't appropriate for PLs that are
less tangled up with core code. Instead, have SPI_cursor_open
install the connection's current QueryEnvironment, as already
happens for SPI_execute_plan.
While in the docs, remove the note that transition tables were only
supported in C and PL/pgSQL triggers, and correct some ommissions.
Thomas Munro with some work by Kevin Grittner (mostly docs)
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This raises the test coverage (by line count) in pltcl.c from about 70%
to 86%.
Karl Lehenbauer and Jim Nasby
Discussion: https://postgr.es/m/92a1670d-21b6-8f03-9c13-e4fb2207ab7b@BlueTreble.com
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Jim Nasby, rather heavily editorialized by me
Patch: <f2134651-14b3-efeb-f274-c69f3c084031@BlueTreble.com>
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Another peculiarity of Danish locale is that it has an unusual idea
of how to sort upper vs. lower case. One of the pltcl test cases has
an issue with that. Now that COLLATE works in all supported branches,
we can just change the test to be locale-independent, and get rid of
the variant expected file that used to support non-C locales.
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Test composite-type arguments and the argisnull and spi_lastoid Tcl
commmands. This stuff was not covered before, but needs to be exercised
since the upcoming Tcl object-conversion patch changes these code paths
(and broke at least one of them).
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This patch adds the SQL-standard concept of an INSTEAD OF trigger, which
is fired instead of performing a physical insert/update/delete. The
trigger function is passed the entire old and/or new rows of the view,
and must figure out what to do to the underlying tables to implement
the update. So this feature can be used to implement updatable views
using trigger programming style rather than rule hacking.
In passing, this patch corrects the names of some columns in the
information_schema.triggers view. It seems the SQL committee renamed
them somewhere between SQL:99 and SQL:2003.
Dean Rasheed, reviewed by Bernd Helmle; some additional hacking by me.
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at end of files.
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PLs to use the standard pg_regress infrastructure. No changes in the
tests themselves. Andrew Dunstan
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