Re: UPDATE table: Syntax to Remove Terminal '\n' - Mailing list pgsql-general

On 14/08/28 8:04, Ian Barwick wrote:
> On 14/08/28 7:31, Rich Shepard wrote:
>>   I have some rows in a table where a column attribute has a newline (\n)
>> appended to the string. How do I represent that newline character in a SQL
>> statement using psql?
>>
>>   I've tried adding E'\n' to the end of the string but that doesn't work.
>>
>>   Here's what I see when I select distinct for that column:
>>
>> StarvationCrk+
>>
>>
>>   That's a blank line below the name.
>>
>> TIA,
>
> Not sure what you mean by "doesn't work"; if you want a more precise
> rendering of the newline character, the unicode linestyle (suggested
> by Tom Lane in the previous thread) should do the trick:
>
>     postgres=> \pset linestyle unicode
>     Line style (linestyle) is unicode.
>     postgres=> SELECT E'foo\n';
>      ?column?
>     ──────────
>      foo     ↵
>
>     (1 row)

And to remove the newline character you can do something like this:

    postgres=> SELECT regexp_replace(E'foo\n', E'\n$','');
     regexp_replace
    ────────────────
     foo
    (1 row)


Regards

Ian Barwick

--
 Ian Barwick                   http://www.2ndQuadrant.com/
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