Re: [GENERAL] Which Python library - psycopg2 or pygresql?

2008-04-20 Thread Paul Boddie
On 18 Apr, 14:12, [EMAIL PROTECTED] (Karsten Hilbert) wrote: > > If one wants to operate on one/a range of row(s) but the > code fetches "all" rows (for various values of all) then I'd > suspect there's something missing in the SQL statement, say, > a LIMIT or appropriate WHERE conditions - regardl

Re: [GENERAL] Which Python library - psycopg2 or pygresql?

2008-04-18 Thread Paul Boddie
On 15 Apr, 17:53, [EMAIL PROTECTED] (Erik Jones) wrote: > On Apr 15, 2008, at 10:27 AM, Dawid Kuroczko wrote: > > > By the looks of descriptions I am slightly inclined towards > > psycopg2, but I would feel better if I talked with people > > who actually used these libraries. > > Most definitely ps

Re: [GENERAL] MySQL to Postgres question

2008-03-21 Thread Paul Boddie
On 21 Mar, 17:15, [EMAIL PROTECTED] ("Edward Blake") wrote: > > When I try and rewrite it as a Postgres statement (below), it fails at line > 9. > 0 SET CONSTRAINTS ALL DEFERRED; > 1 CREATE TABLE products ( > 2 product_id serial[11] not null, > 3 product_name varchar[255] not null, >

Re: [GENERAL] postgre vs MySQL

2008-03-14 Thread Paul Boddie
On 14 Mar, 09:26, [EMAIL PROTECTED] ("jose javier parra sanchez") wrote: > > itself open source, you have to pay to get a license. Pay for GPL > > software? > > You cannot be serious, GPL has no relation with monetary value. The > GPL is a 'Usage License'. If i write GPL software to my clients,

Re: [GENERAL] Auto incrementing primary keys

2008-02-18 Thread Paul Boddie
On 18 Feb, 13:36, django_user <[EMAIL PROTECTED]> wrote: > > How can stop postgresql from incrementing the primary key value, so > that even after many failed insert statements it get the next id val. "Auto-incrementing" columns, typically implemented using the serial data type [1], employ sequenc

Re: [GENERAL] Deadlock when updating table partitions (and presumed solution)

2007-12-06 Thread Paul Boddie
On 5 Des, 05:00, [EMAIL PROTECTED] (Tom Lane) wrote: > > Yeah, this is a problem. The SELECT will acquire AccessShareLock > on R and P, and subsequently try to acquire AccessShareLock on all > the inheritance children of P (and I don't think the order in which > these locks are acquired is very cl

[GENERAL] Deadlock when updating table partitions (and presumed solution)

2007-12-04 Thread Paul Boddie
I recently encountered an interesting situation with regard to partitioned tables, concurrent updates and deadlocks which probably has an obvious explanation, although I can't seem to find one in the manual. Below, I explain the situation and provide some of my own naive reasoning about what seems

Re: [GENERAL] PostgresSQL vs Ingress

2007-12-02 Thread Paul Boddie
On 30 Nov, 16:12, [EMAIL PROTECTED] (Tom Lane) wrote: > [Quoting a re-telling of the myth of products living happily ever after under the control of big companies] > Anyone who thinks that's a reason to feel good is living on some other > planet than I do. Consider that if the company *does* dec

Re: [GENERAL] select count() out of memory

2007-10-29 Thread Paul Boddie
On 25 Okt, 17:36, [EMAIL PROTECTED] wrote: > > The design is based on access patterns, i.e. one partition represents a > group of data along a discrete axis, so the partitions are the perfect for > modeling that. Only the last partition will be used on normal cases. The > previous partitions only n

Re: [GENERAL] Database reverse engineering

2007-09-18 Thread Paul Boddie
On 13 Sep, 06:12, [EMAIL PROTECTED] (Ow Mun Heng) wrote: > On Mon, 2007-09-10 at 13:00 -0600, RC Gobeille wrote: > > Or this one: > >http://schemaspy.sourceforge.net/ > > Can't seem to get it to connect to PG using the example. > > java -jar schemaSpy_3.1.1.jar -t pgsql -u operator -p operator -o >