On 27th of November, Robert Haas committed patch which adds new, interesting contrib module:
New contrib module, auth_delay. KaiGai Kohei, with a few changes by me.
On 21st of November Robert Haas committed new patch, which adds new function:
Add new SQL function, format(text).
Currently, three conversion format specifiers are supported: %s for a string, %L for an SQL literal, and %I for an SQL identifier. The latter two are deliberately designed not to overlap with what sprintf() already supports, in case we want to add more of sprintf()'s functionality here later. Patch by Pavel Stehule, heavily revised by me. Reviewed by Jeff Janes and, in earlier versions, by Itagaki Takahiro and Tom Lane.
On 8th of November, Tom Lane committed patch, which doesn't provide any new features, but removes one of the more annoying footguns in PostgreSQL:
Prevent invoking I/O conversion casts via functional/attribute notation. PG 8.4 added a built-in feature for casting pretty much any data type to string types (text, varchar, etc). We allowed this to work in any of the historically-allowed syntaxes: CAST(x AS text), x::text, text(x), or x.text. However, multiple complaints have shown that it's too easy to invoke such casts unintentionally in the latter two styles, particularly field selection. To cure the problem with the narrowest possible change of behavior, disallow use of I/O conversion casts from composite types to string types via functional/attribute syntax. The new functionality is still available via cast syntax. In passing, document the equivalence of functional and attribute syntax in a more visible place.
Finally, on 25th of October, Tom Lane committed patch which does:
Allow new values to be added to an existing enum type. After much expenditure of effort, we've got this to the point where the performance penalty is pretty minimal in typical cases. Andrew Dunstan, reviewed by Brendan Jurd, Dean Rasheed, and Tom Lane
Support suffix matching of host names in pg_hba.conf A name starting with a dot can be used to match a suffix of the actual host name (e.g., .example.com matches foo.example.com).
On 15th of October Peter Eisentraut committed patch (his own) which adds:
Support host names in pg_hba.conf Peter Eisentraut, reviewed by KaiGai Kohei and Tom Lane
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.
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.
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