On Mon, 2003-11-17 at 18:13, Tomasz Myrta wrote:
Dnia 2003-11-17 19:00, Uytkownik Michele Bendazzoli napisa:
a is always present in the queries ... and other that (a, ab, abc) i
have only to query (ac): so I think I have to index separately only
(ac).
For such cases consider changing
I wonder if is useless to set some indexes for columns contained in a
multifield primary key.
Suppose by example that one have a table1 with a primary key over three
field (a, b, c):
ALTER TABLE public.table1
ADD CONSTRAINT table1_pkey PRIMARY KEY(a, b, c);
are the indexes over (a) and (a,
On Mon, 2003-11-17 at 17:15, Tomasz Myrta wrote:
Dnia 2003-11-17 18:00, Uytkownik Michele Bendazzoli napisa:
p.s. I know, I'll have to begin to use the explain command ...
I promise I'll do it ;-)
Use the explain analyze command and then answer yourself ;-)
I'm not in still in production
On Mon, 2003-11-17 at 17:14, Peter Eisentraut wrote:
Michele Bendazzoli writes:
ALTER TABLE public.table1
ADD CONSTRAINT table1_pkey PRIMARY KEY(a, b, c);
are the indexes over (a) and (a, b) redundant (and so useless)?
Exactly.
p.s. I know, I'll have to begin to use the explain
On Mon, 2003-11-17 at 17:23, Rod Taylor wrote:
Suppose by example that one have a table1 with a primary key over three
field (a, b, c):
..
are the indexes over (a) and (a, b) redundant (and so useless)?
Yes, they are redundant not not necessarily useless.
In short, an index with 3
I have found a strange behaviour that I don't know if is a bug or not.
I have three tables:
* abilitazione with a primary key of (comuneid, cassonettoid, chiaveid)
* cassonetto with a primary key of (comuneid, cassonettoid)
* chiave with a primary key of (comuneid, chiaveid)
and two foreign
On Thu, 2003-10-30 at 18:29, Jan Wieck wrote:
Not entirely. On which table(s) are the REFERENCES constraints and are
they separate per column constraints or are they multi-column constraints?
here are the constraints of the abilitazione table
ALTER TABLE public.abilitazione
ADD CONSTRAINT
On Tue, 2003-08-26 at 08:50, BenLaKnet wrote:
just one question
You use zope with postgresql ??
yes.
No problem of connection ?
Until now no. I use debian unstable.
ciao, Michele
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On Sat, 2003-08-23 at 23:01, Dieter Maurer wrote:
cut
What do you think of?
When your data fits well in a relational database
(a huge number of highly structured records, no full text indexes),
put it in Postgres. Otherwise, try the ZODB.
Make some preliminary mass tests before your
On Mon, 2003-08-25 at 09:12, Michele Bendazzoli wrote:
ops ...
apologies for the message.
Michele
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I think i found a bug in PL/PGSQL: when i use a parameter bigint (int8)
and call the function from psql an error message which says that the
functioname(bigint) doesn't exist is displayed.
If i turn the int8 to int4 all works fine ...
Now i use two int4 instead of one int8: is advisable?
ciao,
On Fri, 2003-08-22 at 15:05, Richard Huxton wrote:
On Friday 22 August 2003 12:59, Michele Bendazzoli wrote:
I think i found a bug in PL/PGSQL: when i use a parameter bigint (int8)
and call the function from psql an error message which says that the
functioname(bigint) doesn't exist
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