Pop text in front of that first value and it works:
template1=# select text '##10############--------####79909999'
template1=# as "sortfield"
template1-# union
template1-# select '###1############--------####79909999'
template1-# order by sortfield;
sortfield
--------------------------------------
###1############--------####79909999
##10############--------####79909999
(2 rows)
Stu
Ruggero wrote:
> Hi all,
> I have a problem sorting varchar fields.
> I will explain the problem with a simple example:
>
> this query
> select '##10' as sortfield
> union
> select '###1' as sortfield
> order by sortfield
> produces this correct output:
> '###1'
> '##10'
>
> but this one
>
> select '##10############--------####79909999' as sortfield
> union
> select '###1############--------####79909999' as sortfield
> order by sortfield
> produces this wrong output:
> '##10############--------####79909999'
> '###1############--------####79909999'
>
> I'm using postgresql 7.4.3 on Suse Linux 9.1.
> I created my db using: initdb --pgdata=../data/ --encoding=LATIN1
> --lc-collate=it_IT --lc-ctype=it_IT
>
> Any suggestion?
> Tia
> Ruggero
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TIP 8: explain analyze is your friend
