Re: [GENERAL] Table Bloat still there after the Vacuum

2010-04-26 Thread Chris . Ellis
sql-cluster.html) that will physically rewrite the table. However note it will require an Access Exclusive lock on the table preventing any other activity on the table. Chris Ellis ** If you are not the intended recipient

Re: [GENERAL] Are there plans to add data compression feature to postgresql?

2008-10-27 Thread Chris . Ellis
Note that most data stored in the TOAST table is compressed. IE a Text type with length greater than around 2K will be stored in the TOAST table. By default data in the TOAST table is compressed, this can be overriden. However I expect that compression will reduce the performance of certain

Re: [GENERAL] combine SQL SELECT statements into one

2010-02-01 Thread Chris . Ellis
ntory WHERE modified >= '2010-01-20') AS "COUNT_2", (SELECT COUNT(distinct model) FROM inventory WHERE modified >= '2010-01-01') AS "COUNT_3" ; PostgreSQL allows sub-queries in the select list as long as the sub-qu

Re: [GENERAL] combine SQL SELECT statements into one

2010-02-01 Thread Chris . Ellis
odified >= '2010-01-20') AS "COUNT_2", > >(SELECT COUNT(distinct model) FROM inventory WHERE > > modified >= '2010-01-01') AS "COUNT_3" > > ; > > > > PostgreSQL allows sub-queries in the select list as long as

Re: [Fwd: Re: [GENERAL] fulltext search stemming/ spelling problems]

2010-04-09 Thread Chris . Ellis
efore can only tell you how I approached a similar problem. I hope that is of some use. Chris Ellis pgsql-general-ow...@postgresql.org wrote on 04/09/2010 02:53:19 PM: > Hi, > > nobody here who knows how to get the postgre fulltext working with > ispell and stemming? :-( > > So th

Re: [GENERAL] field with Password

2009-02-04 Thread Chris . Ellis
insert into auth (user_id, salt, password) values (1,'blah',md5('blah' || 'test') || sha1('blah' || 'test')) ; then to check the password select true from auth where user_id = 1 and password = md5( salt || 'test&#

[GENERAL] Server Performance

2009-03-31 Thread Chris . Ellis
controllers would anyone recommend purchasing? Any information is gratefully received Chris Ellis Shropshire Council chris.el...@shropshire.gov.uk ** If you are not the intended recipient of this email please do not send it

Re: [GENERAL] Server Performance

2009-03-31 Thread Chris . Ellis
sing? > > I am using an Areca 1680 series controller. 16 SAS 15k5 disks. 2 > RAID-1, 12 RAID-10, 2 hot spares. 512Meg bbu. RHEL 5.2 I can sustain > around 3000 tps with pgbench and 30 minute runs. Thanks for the Info. > > I'd call IBM and ask them to come pick up their

Re: [GENERAL] Server Performance

2009-03-31 Thread Chris . Ellis
unately, I seem stuck with them :( > > Can you at least source your own RAID controllers? Yes I will be, I never really did trust IBM and I certainly don't now! I just need to choose the correct RAID card now, good performance at the right price. Chris Ellis ***

Re: [GENERAL] Server Performance

2009-04-01 Thread Chris . Ellis
Stefan Kaltenbrunner wrote on 01/04/2009 06:53:07: > chris.el...@shropshire.gov.uk wrote: > > > > Scott Marlowe wrote on 31/03/2009 15:53:34: > > > > > On Tue, Mar 31, 2009 at 8:21 AM, wrote: > > > > > > > > Scott Marlowe wrote on 31/03/2009 15:16:01: > > > > > > > >> I'd call IBM a

Re: [GENERAL] Looking for advice on database encryption

2009-04-17 Thread Chris . Ellis
atabase the correct tool for the job if you want this level of encryption and granularity? Also, how secure are you communication channels, what stops me snooping the data in transit, ARP posioning and other techniques etc. Chris Ellis ***

Re: [GENERAL] Looking for advice on database encryption

2009-04-17 Thread Chris . Ellis
> > Take the performance hit, If people on high want the data encrypted, then > > they have to suffer the performance penalty, however bad. > > As reasonable as that sounds, I don't think it's true. We've already > brainstormed a dozen ways to work around the performance issue (creative > hash