Re: sort / limit / range problem

On Wed, 5 Mar 2003, Gary Stainburn wrote:

> Hi folks,
> 
> I've got a glossary table that I'm trying to render to HTML.  However, I've 
> got a problem when using order by and limit.  Below is an example of  a psql 
> session showing my problem. Anyone got any reasons why the last select misses  
> 'Driver'?

You forgot ORDER BY glterm

> 
> nymr=# select glterm from glossary where glterm like 'D%' order by glterm;
>      glterm
> ----------------
>  Dampers
>  Dart
>  Detonators
>  Disposal
>  Dome
>  Draw Bar
>  Driver
>  Driving Wheels
>  Duty Fitter
> (9 rows)
> 
> nymr=# select glterm from glossary where glterm > 'Driving Wheels' limit 1;
>    glterm
> -------------
>  Duty Fitter
> (1 row)
> 
> nymr=# select glterm from glossary where glterm > 'Draw Bar' limit 1;
>      glterm
> ----------------
>  Driving Wheels
> (1 row)
> 
> nymr=# \d glossary
>                                     Table "glossary"
>  Attribute |         Type          |                      Modifier
> -----------+-----------------------+-----------------------------------------------------
>  glid      | integer               | not null default 
> nextval('glossary_glid_seq'::text)
>  glterm    | character varying(30) | not null
>  gldesc    | text                  |
> Indices: glossary_pkey,
>          glossary_term_index
> 
> nymr=#
> 
> 

-- 
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Achilleus Mantzios
S/W Engineer
IT dept
Dynacom Tankers Mngmt
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email:  achill@matrix.gatewaynet.com       mantzios@softlab.ece.ntua.gr