We can also implement the same for index tuples.
On Dec 17, 2007 1:10 PM, Gokulakannan Somasundaram [EMAIL PROTECTED]
wrote:
Hi,
Currently we check for the existence of NULL values in the tuple and
we set the has_null flag. If the has_null flag is present, the tuple will be
storing
Gokulakannan Somasundaram wrote:
a) When i was looking at the code for freezing heap tuples, i found out the
following. While freezing we log the complete block(not just the tuples we
froze).
b) Again after removing the dead tuples and fragmentation, we log the
complete block.
Umm, no we
Andrew Dunstan wrote:
The docs contain the following example of an archive_command for use
with standalone hot backup:
test -f /var/lib/pgsql/backup_in_progress cp -i %p
/var/lib/pgsql/archive/%f /dev/null
Unfortunately, as I found out when I tried it, this command returns a
On Sat, 2007-12-15 at 13:32 +0100, Albert Cervera i Areny wrote:
Read-Only Tables
Postgres supports the concept of freezing tuples, so they can live
forever within the database without needing further writes. Currently
there is no command that will guarantee that a table
Gokulakannan Somasundaram [EMAIL PROTECTED] writes:
a) By modifying the functions, heap_form_tuple and heap_fill_tuple, we can
check whether all the nulls are trailing nulls. If all the nulls are
trailing nulls, then we will not set the has_null flag and we will not have
the null bitmap with
On Mon, 2007-12-17 at 13:10 +0530, Gokulakannan Somasundaram wrote:
Currently we check for the existence of NULL values in the tuple
and we set the has_null flag. If the has_null flag is present, the
tuple will be storing a null bitmap. What i propose is
Will this work for ALTER TABLE
Hi all,
I wonder why my ecxt_scantuple has a TupleDesc matching the subplan's tlist,
not my plan's tlist. Basically, my question is what is x in
econtext-ecxt_scantuple = x ?
I have written a new executor node Foo, with corresponding ExecFoo and make_foo
functions. I have also written a new
On Dec 17, 2007 3:28 PM, Simon Riggs [EMAIL PROTECTED] wrote:
On Mon, 2007-12-17 at 13:10 +0530, Gokulakannan Somasundaram wrote:
Currently we check for the existence of NULL values in the tuple
and we set the has_null flag. If the has_null flag is present, the
tuple will be storing a
Thanks. I agree with you.
--
Thanks,
Gokul.
CertoSQL Project,
Allied Solution Group.
(www.alliedgroups.com)
Gregory Stark wrote:
Gokulakannan Somasundaram [EMAIL PROTECTED] writes:
a) By modifying the functions, heap_form_tuple and heap_fill_tuple, we can
check whether all the nulls are trailing nulls. If all the nulls are
trailing nulls, then we will not set the has_null flag and we will not
On Mon, 2007-12-17 at 08:47 -0500, Andrew Dunstan wrote:
This strikes me as such a corner case that it's likely not to be worth it.
If you really want to save space along these lines, one better place to
start might be mutable with column ordering - see
Simon Riggs [EMAIL PROTECTED] writes:
On Mon, 2007-12-17 at 08:47 -0500, Andrew Dunstan wrote:
This strikes me as such a corner case that it's likely not to be worth it.
If you really want to save space along these lines, one better place to
start might be mutable with column ordering -
[EMAIL PROTECTED] writes:
I wonder why my ecxt_scantuple has a TupleDesc matching the subplan's
tlist, not my plan's tlist.
That's the way it's supposed to be --- the scantuple slot is for
scanning your subplan's output.
I have written a new executor node Foo, with corresponding ExecFoo and
Hi there,
just interested do we have a place where developers could post
their availability for contract work ?
For example, I and Teodor will be available soon
for contract work and we prefer to work on postgres-related projects,
mostly from our todo list. I'd like to post this list
Tom Lane wrote:
Alvaro Herrera [EMAIL PROTECTED] writes:
I don't know how to make it output the symbol names like it seems to do
for you.
I dislike the object-file-based approach altogether, not least because
it appears to depend on unportable aspects of someBSD's objdump.
Surely
Hi there,
just interested do we have a place where developers could post
their availability for contract work ?
For example, I and Teodor will be available soon
for contract work and we prefer to work on postgres-related projects,
mostly from our todo list. I'd like to post this list
On Mon, 17 Dec 2007, Magnus Hagander wrote:
Hi there,
just interested do we have a place where developers could post
their availability for contract work ?
For example, I and Teodor will be available soon
for contract work and we prefer to work on postgres-related projects,
mostly from our
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
On Mon, 17 Dec 2007 20:24:15 +0300 (MSK)
Oleg Bartunov [EMAIL PROTECTED] wrote:
On Mon, 17 Dec 2007, Magnus Hagander wrote:
Hi there,
just interested do we have a place where developers could post
their availability for contract work ?
Hi,
I made the fix and tested it today. It involved some 10-15 lines of code
change. I will mail it tomorrow. Feel free to give suggestions on making the
fix more maintainable.
I have followed Gregory's advice in the fix - Instead of changing the
slot_deform_tuple, i have reduced the number
Oleg Bartunov wrote:
On Mon, 17 Dec 2007, Magnus Hagander wrote:
Hi there,
just interested do we have a place where developers could post
their availability for contract work ?
For example, I and Teodor will be available soon
for contract work and we prefer to work on postgres-related
Has anyone looked into sorting algorithms that could use
more than one CPU or core at a time?
Benchmarks I see[1][2] suggest that sorting is an area that
improves greatly with multiple processors and even with
multi-threading on a single core processor.
For 1-processor and 2-threads (1p2t),
On Dec 17, 2007 3:23 PM, Heikki Linnakangas [EMAIL PROTECTED] wrote:
Oleg Bartunov wrote:
On Mon, 17 Dec 2007, Magnus Hagander wrote:
just interested do we have a place where developers could post
their availability for contract work ?
For example, I and Teodor will be available soon
On Dec 14, 2007, at 11:10 PM, Neil Conway wrote:
But it occurred to me just now that the hardware instruction
counter available
on just about every platform would be good enough for a heuristic
guess at
whether the read(2) was cached.
I'm skeptical that this would be reliable enough to be
On Mon, 17 Dec 2007, Decibel! wrote:
Someone want to throw together some code that actually measures this? Maybe
something that keeps a histogram of how many instructions take place per I/O
request? If it turns out that counters do vary too much between CPUs, there
might be ways that we can
On 12/17/07, Decibel! [EMAIL PROTECTED] wrote:
Also, has anyone looked into adding a class of system calls that
would actually tell us if the kernel issued physical IO? I find it
hard to believe that other RDBMSes wouldn't like to have that info...
Non-blocking style interfaces can help here.
25 matches
Mail list logo
