Обсуждение: Re: String reverse funtion?

ginkgo36 wrote
> Hello everyone
>
> I have to reverse a string like EA;BX;CA to CA;BX;EA. or EA,BX,CA to
> CA,BX,EA
>
> Is there any function to do this?
>
> Thanks all!

No.  You will have to write your own.

David J.




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On 10/9/2013 11:52 AM, David Johnston wrote:
> ginkgo36 wrote
>> Hello everyone
>>
>> I have to reverse a string like EA;BX;CA to CA;BX;EA. or EA,BX,CA to
>> CA,BX,EA
>>
>> Is there any function to do this?
>>
>> Thanks all!
> No.  You will have to write your own.
>
> David J.
>
>


Based upon the example, it's probably very easy to use a split/explode
in your language of choice (VB.NET, perl, python, etc).

2013/10/9 John Meyer <johnmeyer@pueblocomputing.com>

On 10/9/2013 11:52 AM, David Johnston wrote:

ginkgo36 wrote

Hello everyone
  I have to reverse a string like EA;BX;CA to CA;BX;EA. or EA,BX,CA to
CA,BX,EA
  Is there any function to do this?

Thanks all!

No.  You will have to write your own.

David J.

Based upon the example, it's probably very easy to use a split/explode in your language of choice (VB.NET, perl, python, etc).

or SQL

select string_agg(u, ';' order by r desc)
   from (select row_number() over () r, u
                from unnest(string_to_array('EA;BX;CA',';')) u) x;
 string_agg
────────────
 CA;BX;EA
(1 row)

Regards

Pavel

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Thanks alot everyone,
Actually, I just start learning about Programming language. So, each your
solution is a good suggestion for me to learning. Thanks so much.
Please help me one User-defined Functions to solves this when my data like
this:
EA;BX;CA
CA;EA
BX;EA
And when run UDFs, output is:
CA;BX;EA
EA;CA
EA;BX

One again, thanks so much

Pavel Stehule wrote
>> Based upon the example, it's probably very easy to use a split/explode in
>> your language of choice (VB.NET, perl, python, etc).
>
>
> or SQL
>
> select string_agg(u, ';' order by r desc)
>    from (select row_number() over () r, u
>                 from unnest(string_to_array('EA;BX;CA',';')) u) x;
>  string_agg
> ────────────
>  CA;BX;EA
> (1 row)
>
> Regards
>
> Pavel
>
>
>>
>>
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>> Sent via pgsql-general mailing list (

> pgsql-general@

> )
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>>





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