On Thu, Jul 29, 2010 at 10:33 PM, Dean Rasheed dean.a.rash...@gmail.com wrote:
On 28 July 2010 02:58, Howard Rogers h...@diznix.com wrote:
For what it's worth, I wrote up the performance comparison here:
http://diznix.com/dizwell/archives/153
Thanks, very interesting results. I wonder
On Wed, Jul 28, 2010 at 8:38 PM, Daniel Verite dan...@manitou-mail.org wrote:
zhong ming wu wrote:
I always thought there is a clause in their user agreement preventing
the users from publishing benchmarks like that. I must be mistaken.
No you're correct. Currently, to download the
Thanks to some very helpful input here in earlier threads, I was
finally able to pull together a working prototype Full Text Search
'engine' on PostgreSQL and compare it directly to the way the
production Oracle Text works. The good news is that PostgreSQL is
bloody fast! The slightly iffy news is
On Fri, Jul 23, 2010 at 3:02 PM, Scott Marlowe scott.marl...@gmail.com wrote:
If you mean, did I read the bit in the doco where it said nothing at
all in the 'these are great advantages' style I've just described, but
instead makes the fairly obvious point that a bit string takes 8 bits
to
On Fri, Jul 23, 2010 at 7:57 PM, Stephen Cook scli...@gmail.com wrote:
On 7/23/2010 5:33 AM, Howard Rogers wrote:
...so select * from table where 21205 | 4097 = 21205 would correctly
grab that record. So I'm assuming you mean the 'stored value' should
be on both sides of the equals test
Hate to interrupt your flame war, and I apologize for not being precise in
my meaning first try... You don't need any bitwise anything to compare two
bitmasks-hiding-in-integers, just check for equality.
Instead of select * from coloursample where colour 10 = 10; just try
select * from
On Fri, Jul 23, 2010 at 6:17 PM, Alban Hertroys
dal...@solfertje.student.utwente.nl wrote:
I thought to do
select * from coloursample where colour 10 = 10;
...but that's not right, because it finds the third record is a match.
What's not entirely clear to me is whether you only want to
On Thu, Jul 22, 2010 at 1:02 PM, Scott Marlowe scott.marl...@gmail.com wrote:
Why on Earth would I want to store this sort of stuff in a bit string?!
Because you are manipulating bits and not integers? I guess there are
10 kinds of people, those who like think in binary and those who
On Fri, Jul 23, 2010 at 12:35 AM, Peter Hunsberger
peter.hunsber...@gmail.com wrote:
On Wed, Jul 21, 2010 at 11:13 PM, Howard Rogers h...@diznix.com wrote:
On Thu, Jul 22, 2010 at 1:02 PM, Scott Marlowe scott.marl...@gmail.com
wrote:
Why on Earth would I want to store this sort of stuff
On Fri, Jul 23, 2010 at 8:37 AM, Scott Marlowe scott.marl...@gmail.com wrote:
On Thu, Jul 22, 2010 at 3:09 PM, Howard Rogers h...@diznix.com wrote:
On Fri, Jul 23, 2010 at 12:35 AM, Peter Hunsberger
peter.hunsber...@gmail.com wrote:
On Wed, Jul 21, 2010 at 11:13 PM, Howard Rogers h
Suppose 1=Red, 2=Yellow, 4=Green and 8=Orange.
Now suppose the following data structures and rows exist:
create table coloursample (recid integer, colour integer, descript varchar);
insert into coloursample values (1,2,'Yellow only');
insert into coloursample values (2,10,'Yellow and Orange');
On Wed, Jul 21, 2010 at 9:17 PM, Mathieu De Zutter math...@dezutter.org wrote:
On Wed, Jul 21, 2010 at 5:59 AM, Howard Rogers h...@diznix.com wrote:
It's also easy to find records which have either some yellow or some
orange (or both) in them:
select * from coloursample where colour 100
I asked recently about a performance problem I'd been having with some
full text queries, and got really useful help that pointed me to the
root issues. Currently, I'm trying to see if our document search
(running on Oracle Text) can be migrated to PostgreSQL, and the reason
I asked that earlier
On Mon, Jul 19, 2010 at 6:16 AM, Tom Lane t...@sss.pgh.pa.us wrote:
Howard Rogers h...@diznix.com writes:
ims=# select count(*) from search_rm
where to_tsvector('english', textsearch) @@ to_tsquery('english','bat
sb12n');
count
---
3849
(1 row)
Time: 408.962 ms
ims=# select
On Fri, Jul 16, 2010 at 10:23 AM, Tom Lane t...@sss.pgh.pa.us wrote:
Howard Rogers h...@diznix.com writes:
I have 10 million rows in a table, with full text index created on one
of the columns. I submit this query:
ims=# select count(*) from search_rm
ims-# where to_tsvector('english
On Sat, Jul 17, 2010 at 3:14 AM, Tom Lane t...@sss.pgh.pa.us wrote:
Howard Rogers h...@diznix.com writes:
OK, Tom: I did actually account for the number of rows difference
before I posted, though I accept I didn't show you that. So here goes:
...
Both queries return zero rows. One takes
I have 10 million rows in a table, with full text index created on one
of the columns. I submit this query:
ims=# select count(*) from search_rm
ims-# where to_tsvector('english', textsearch)
ims-# @@ to_tsquery('english', 'woman beach ball');
count
---
646
(1 row)
Time: 107.570 ms
On 06/03/2010 08:26 AM, Chris Browne wrote:
len.wal...@gmail.com (Len Walter) writes:
I need to populate a new column in a Postgres 8.3 table. The SQL would be something
like update t set col_c = col_a +
col_b. Unfortunately, this table has 110 million rows, so running that query
runs out of
...@fetter.org wrote:
On Wed, Jun 30, 2010 at 10:10:02AM +1000, Howard Rogers wrote:
I am stumped, despite working on this for a week! I am trying to create a
64-bit postgresql 8.4 database server which can retrieve data from
various
64-bit Oracle 10gR2 and 11gR2 databases.
Try downloading
at 10:10:02AM +1000, Howard Rogers wrote:
I am stumped, despite working on this for a week! I am trying to create a
64-bit postgresql 8.4 database server which can retrieve data from
various
64-bit Oracle 10gR2 and 11gR2 databases.
Try downloading the latest version of DBI-Link using
I am stumped, despite working on this for a week! I am trying to create a
64-bit postgresql 8.4 database server which can retrieve data from various
64-bit Oracle 10gR2 and 11gR2 databases.
- I have a freshly-installed 64-bit Centos 5.5, no firewall, no SELinux.
- I create an oracle user
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