From: Spirou <spirou@carolo.net>
To: pgsql-interfaces <pgsql-interfaces@postgreSQL.org>
Subject: PgAccess and arrays
Date: Wed, 11 Aug 1999 07:23:23 +0200
Message-ID: <37B108CB.842CC5C7@carolo.net> (raw)
References: <37AD4E21.DFDF72A8@flex.ro>
It seems that pgAccess has as much trouble as I have with arrays ...
and perhaps more since I can't even run the queries below in it.
Does anyone have information on those damned arrays ?
Here is the text of a message I have posted on NOVICE
without success up to now.
********************************
I'd like to make some selections on values in arrays.
I know I could use a more 'SQL-correct' way to achieve this.
(create another table, link it to the first one and so on.)
But I was playing with arrays and I was wondering ...
I give an exemple to make my question clear (I hope)
let's say I store some values in a 2 dim array :
create table myfunction (
id int4,
name text,
args text[][]);
insert into myfunction
values( 1,
'func1',
'{{"key1", "value1"}, {"key2", "value2"}}');
insert into myfunction
values( 2,
'func2',
'{{"key1", "value1"}, {"key2", "value5"}, {"key3",
"value2"}}');
everything's OK.
I can store my values.
I can retrieve them :
select args from myfunction where name = 'func1';
or
select myfunction.args[1][2] where id = 2;
or even
select myfunction.args[1:1][1:2] where id = 2;
with some trial & errors it works.
But I can't manage to look into myfunction.args,
I mean something like
select name from myfunction
where myfunction.args [][2] = 'value2';
or
select name from myfunction
where myfunction.args ~~ '%value2%';
if I don't know where is value2 in my array (if it exists).
Which operators can I use ?
How can I inspect an array-field ?
Any information on arrays would be welcome.
--
Spirou
Un club Linux pour les Carolos -->
http://carolo.net/carolinux/index.html
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To: pgsql-interfaces@postgresql.org
Cc: spirou@carolo.net
Subject: Re: PgAccess and arrays
In-Reply-To: <37B108CB.842CC5C7@carolo.net>
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