From: Michael Weaver <mweaver@corpusglobe.com>
To: 'ddurst@larubber.com' <ddurst@larubber.com>
To: pgsql-sql@postgresql.org
Subject: Re: Passing arrays
Date: Fri, 14 Feb 2003 17:29:36 +0800
Message-ID: <3B663B41B350D311AEEF00A0C9254563201A73@VISION1> (raw)
There is a function array_dims(array) that returns the size of array.
It's not THAT useful as it returns a string like '[1:2]' <-( 1 lower, 2
upper bound.)
With a little bit of string processing you could get the size of the array.
> -----Original Message-----
> From: David Durst [mailto:ddurst@larubber.com]
> Sent: Friday, 14 February 2003 4:58 PM
> To: pgsql-sql@postgresql.org
> Subject: Re: [SQL] Passing arrays
>
>
> This is slightly off the original topic but related.
>
> Is there any function or way I can easily find the size of
> the passed array?
> > On Fri, 14 Feb 2003, Michael Weaver wrote:
> >
> >>
> >>
> >> > -----Original Message-----
> >> > From: Stephan Szabo [mailto:sszabo@megazone23.bigpanda.com]
> >> > Sent: Friday, 14 February 2003 12:58 PM
> >> > To: Michael Weaver
> >> > Cc: 'pgsql-novice@postgresql.org'; 'pgsql-sql@postgresql.org'
> >> > Subject: Re: [SQL] Passing arrays
> >> >
> >> >
> >> >
> >> > On Fri, 14 Feb 2003, Michael Weaver wrote:
> >> >
> >> > > How do you get an array of elements to be passed to a
> >> > stored proc such that
> >> > > you can use the array in a SELECT statement in the WHERE clause
> >> > > - e.g. WHERE field IN (array) etc...
> >> >
> >> > A straight WHERE field IN (array) doesn't work. That's
> attempting
> >> to compare the field directly to the array as a whole (which is
> >> > why you get
> >> > the particular error you do.
> >>
> >> I've got around this limitation using strings, but I do find it
> >> suprising, that Postgres handles arrays this way.
> >> Searching an array in an WHERE IN clause would be a useful task.
> >> (namely for passing arrays of values between stored functions)
> >>
> >> Ok it could be confusing, but I think a number of other
> DBs employ it
> >> to good effect.
> >>
> >> I'll take a look at the array extension in contrib - it
> sounds useful.
> >
> > Also check out contrib/intarray and its indexing capabilites
> > if you have 1 dimensional integer arrays.
> >
> >>
> >> Thanks.
> >>
> >
> > ==================================================================
> > Achilleus Mantzios
> > S/W Engineer
> > IT dept
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To: pgsql-sql@postgresql.org
Cc: mweaver@corpusglobe.com, ddurst@larubber.com
Subject: Re: Passing arrays
In-Reply-To: <3B663B41B350D311AEEF00A0C9254563201A73@VISION1>
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