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Sv: Re: Sv: Re: regex match and special characters

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På torsdag 16. august 2018 kl. 16:32:40, skrev Adrian Klaver <adrian.klaver@xxxxxxxxxxx>:
On 08/16/2018 07:04 AM, Andreas Joseph Krogh wrote:

> char(2006) produces the wrong character as 2006 is the hex-value. You
> have to use 8198:
> andreak@[local]:543310.4 andreak=# select version();
> ┌────────────────────────────────────────────────────────────────────────────────────────────────┐
> │                                            version
>                                              │
> ├────────────────────────────────────────────────────────────────────────────────────────────────┤
> │ PostgreSQL 10.4 on x86_64-pc-linux-gnu, compiled by gcc (Ubuntu
> 7.3.0-16ubuntu3) 7.3.0, 64-bit │
> └────────────────────────────────────────────────────────────────────────────────────────────────┘
> (1 row)
>
> andreak@[local]:543310.4 andreak=# select 'abcd'||chr(8198) ~ 'abcd\s';
> ┌──────────┐
> │ ?column? │
> ├──────────┤
> │ t        │
> └──────────┘
> (1 row)

Argh, read the wrong line. Thanks for the correction. Still:

test=# select version();
                                       version

------------------------------------------------------------------------------------
  PostgreSQL 10.5 on x86_64-pc-linux-gnu, compiled by gcc (SUSE Linux)
4.8.5, 64-bit
(1 row)


test=# select 'abcd'||chr(8198) ~ E'abcd\s';
  ?column?
----------
  f
(1 row)
 
When using E-syntax you need to double the backslash for escaping:
 
andreak@[local]:5433 10.4 andreak=# select 'abcd'||chr(8198) ~ E'abcd\\s';
┌──────────┐
│ ?column? │
├──────────┤
│ t        │
└──────────┘
(1 row)

 
 
--
Andreas Joseph Krogh
CTO / Partner - Visena AS
Mobile: +47 909 56 963
andreas@xxxxxxxxxx
www.visena.com
 

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