Tag: waiting

Waiting for 9.1 – triggers on views

On 10th of October, Tom Lane committed patch by Deal Rasheed, which adds triggers on views:

Support triggers on views.
 
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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Waiting for 9.1 – concat, concat_ws, right, left, reverse

On 24th of August, Takahiro Itagaki committed patch:

Log Message:
-----------
Add string functions: concat(), concat_ws(), left(), right(), and reverse().
 
Pavel Stehule, reviewed by me.

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Waiting for 9.1 – Recognize functional dependency on primary keys.

Yesterday (August, 7th), Tom Lane committed:

Log Message:
-----------
Recognize functional dependency on primary keys.  This allows a table's
other columns to be referenced without listing them in GROUP BY, so long as
the primary key column(s) are listed in GROUP BY.
 
Eventually we should also allow functional dependency on a UNIQUE constraint
when the columns are marked NOT NULL, but that has to wait until NOT NULL
constraints are represented in pg_constraint, because we need to have
pg_constraint OIDs for all the conditions needed to ensure functional
dependency.
 
Peter Eisentraut, reviewed by Alex Hunsaker and Tom Lane

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Waiting for 9.1 – Reduced lock levels for ALTER TABLE

On 28th of July, Simon Riggs committed patch which:

Log Message:
-----------
Reduce lock levels of CREATE TRIGGER and some ALTER TABLE, CREATE RULE actions.
Avoid hard-coding lockmode used for many altering DDL commands, allowing easier
future changes of lock levels. Implementation of initial analysis on DDL
sub-commands, so that many lock levels are now at ShareUpdateExclusiveLock or
ShareRowExclusiveLock, allowing certain DDL not to block reads/writes.
First of number of planned changes in this area; additional docs required
when full project complete.

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Waiting for 9.1 – standard_conforming_strings = on

Generally I write about new features, but this change is relatively important.

Yesterday, on 20th of July, Robert Haas committed following change:

Log Message:
-----------
Change the default value of standard_conforming_strings to on.
 
This change should be publicized to driver maintainers at once and
release-noted as an incompatibility with previous releases.

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Waiting for 9.0 – Final Post ?

As of now, I am happy user of 9.1devel version of PostgreSQL:

=$ psql -c 'select version()'
                                                       version                                                       
---------------------------------------------------------------------------------------------------------------------
 PostgreSQL 9.1devel on x86_64-unknown-linux-gnu, compiled by GCC gcc-4.4.real (Ubuntu 4.4.3-4ubuntu5) 4.4.3, 64-bit
(1 row)

So, I guess no new features will make it to 9.0 – after all, 9.0 is currently already beta3.

If you want to get list of what I wrote about for 8.5/9.0 – just check the tag page.