Re: delete item[5] from varchar[] array??? - Mailing list pgsql-sql

From Matthew Peter
Subject Re: delete item[5] from varchar[] array???
Date
Msg-id 20050923170244.72178.qmail@web35206.mail.mud.yahoo.com
Whole thread Raw
In response to Re: delete item[5] from varchar[] array???  (Michael Fuhr <mike@fuhr.org>)
Responses Re: delete item[5] from varchar[] array???
List pgsql-sql

--- Michael Fuhr <mike@fuhr.org> wrote:

> On Wed, Sep 21, 2005 at 06:56:36PM -0700, Matthew
> Peter wrote:
> > How is it possible to delete an item from a single
> > dimension varchar[] array? Lets say it has the
> values
> > {1,2,3,4,5,6}... how do i delete at position [4]?
> 
> I'm not sure if there's a better way, but you could
> concatenate the
> slices adjacent to the position you want to delete:
> 
> test=> SELECT a FROM foo;
>        a       
> ---------------
>  {1,2,3,4,5,6}
> (1 row)
> 
> test=> UPDATE foo SET a = a[1:3] || a[5:6];
> UPDATE 1
> test=> SELECT a FROM foo;
>       a      
> -------------
>  {1,2,3,5,6}
> (1 row)
> 
> -- 
> Michael Fuhr
> 


I sure hope there is a better way :) There must be an
easy, native way to interface with arrays. We all know
programming languages have ways to delete items in an
array natively, it just needs to be exposed.


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