be delivered directly to the collector process. The extra process context
swaps required to transfer data through the buffer process seem to outweigh
any value the buffering might have. Per recent discussion and tests.
I modified Bruce's draft patch to use poll() rather than select() where
available (this makes a noticeable difference on my system), and fixed
up the EXEC_BACKEND case.
< o Add support for WITH HOLD cursors
> o Add support for WITH HOLD and SCROLL cursors
>
> PL/pgSQL cursors should support the same syntax as
> backend cursors.
>
< * %Disallow changing DEFAULT expression of a SERIAL column?
<
< This should be done only if the existing SERIAL problems cannot be
< fixed.
<
> * -Disallow changing DEFAULT expression of a SERIAL column
will be expanded to a list of their member fields, rather than creating
a nested rowtype field as formerly. (The old behavior is still available
by omitting '.*'.) This syntax is not allowed by the SQL spec AFAICS,
so changing its behavior doesn't violate the spec. The new behavior is
substantially more useful since it allows, for example, triggers to check
for data changes with 'if row(new.*) is distinct from row(old.*)'. Per
my recent proposal.
< * Reuse index tuples that point to rows that are not visible to anyone?
> * Reuse index tuples that point to heap tuples that are not visible to
> anyone?
< * Allow heap reuse of UPDATEd rows if old and new versions are on the
< same heap page?
> * Allow heap reuse of UPDATEd rows if no indexed columns are changed,
> and old and new versions are on the same heap page?
< This is possible for same-page updates because a single index row
< can point to both old and new values.
> While vacuum handles DELETEs fine, updating of non-indexed columns, like
> counters, are difficult for VACUUM to handle efficiently. This method
> is possible for same-page updates because a single index row can be
> used to point to both old and new values.
>
> * Allow heap reuse of UPDATEd rows if old and new versions are on the
> same heap page?
>
> This is possible for same-page updates because a single index row
> can point to both old and new values.
> http://archives.postgresql.org/pgsql-hackers/2006-06/msg01305.php
current commands; instead, store current-status information in shared
memory. This substantially reduces the overhead of stats_command_string
and also ensures that pg_stat_activity is fully up to date at all times.
Per my recent proposal.
section into PL/pgSQL and non-PL/pgSQL sections:
< o Fix PL/pgSQL RENAME to work on variables other than OLD/NEW
< o Allow function parameters to be passed by name,
< get_employee_salary(emp_id => 12345, tax_year => 2001)
< o Add Oracle-style packages
< o Add table function support to pltcl, plpython
< o Add capability to create and call PROCEDURES
< o Allow PL/pgSQL to handle %TYPE arrays, e.g. tab.col%TYPE[]
< o Allow function argument names to be statements from PL/PgSQL
< o Add MOVE to PL/pgSQL
< o Add support for polymorphic arguments and return types to
< languages other than PL/PgSQL
< o Add support for OUT and INOUT parameters to languages other
< than PL/PgSQL
< o Add single-step debugging of PL/PgSQL functions
< o Allow PL/PgSQL to support WITH HOLD cursors
< o Allow PL/PgSQL RETURN to return row or record functions
<
< http://archives.postgresql.org/pgsql-patches/2005-11/msg00045.php
> o PL/pgSQL
> o Fix RENAME to work on variables other than OLD/NEW
> o Allow function parameters to be passed by name,
> get_employee_salary(emp_id => 12345, tax_year => 2001)
> o Add Oracle-style packages
> o Allow handling of %TYPE arrays, e.g. tab.col%TYPE[]
> o Allow listing of record column names, and access to
> record columns via variables, e.g. columns := r.(*),
> tval2 := r.(colname)
>
> http://archives.postgresql.org/pgsql-patches/2005-07/msg00458.php
> http://archives.postgresql.org/pgsql-patches/2006-05/msg00302.php
> http://archives.postgresql.org/pgsql-patches/2006-06/msg00031.php
>
> o Add MOVE
> o Add single-step debugging of functions
> o Add support for WITH HOLD cursors
> o Allow PL/RETURN to return row or record functions
>
> http://archives.postgresql.org/pgsql-patches/2005-11/msg00045.php
>
>
> o Other
> o Add table function support to pltcl, plpython
> o Add support for polymorphic arguments and return types to
> languages other than PL/PgSQL
> o Add capability to create and call PROCEDURES
> o Add support for OUT and INOUT parameters to languages other
> than PL/PgSQL
<
< o Add new version of PQescapeString() that doesn't double backslashes
< that are part of a client-only multibyte sequence
<
< Single-quote is not a valid byte in any supported client-only
< encoding. This requires using mblen() to determine if the
< backslash is inside or outside a multi-byte sequence.
<
< o Add new version of PQescapeString() that doesn't double
< backslashes when standard_conforming_strings is true and
< non-E strings are used
< Right now only one encoding is allowed per database.
> Right now only one encoding is allowed per database. [locale]
> * Add CREATE COLLATE? [locale]
< pg_get_tabledef(), pg_get_domaindef(), pg_get_functiondef(), and
< make use of them in pg_dump
> pg_get_tabledef(), pg_get_domaindef(), pg_get_functiondef()
< pg_get_tabledef(), pg_get_domaindef(), pg_get_functiondef()
> pg_get_tabledef(), pg_get_domaindef(), pg_get_functiondef(), and
> make use of them in pg_dump
< * Allow a database in tablespace t1 with tables created in
> o Allow a database in tablespace t1 with tables created in
125c125
< * Allow reporting of which objects are in which tablespaces
> o Allow reporting of which objects are in which tablespaces
593c593
< * Allow GRANT/REVOKE permissions to be inherited by objects based on
> o Allow GRANT/REVOKE permissions to be inherited by objects based on
596c596
< * Allow SERIAL sequences to inherit permissions from the base table?
> o Allow SERIAL sequences to inherit permissions from the base table?