From: | "Andrus" <kobruleht2(at)hot(dot)ee> |
---|---|
To: | "Alban Hertroys" <dalroi(at)solfertje(dot)student(dot)utwente(dot)nl> |
Cc: | <pgsql-general(at)postgresql(dot)org> |
Subject: | Re: How to perform text merge |
Date: | 2010-03-28 20:48:20 |
Message-ID: | F560621B70F448FBAC5A3B30E1F26A5C@andrusnotebook |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-general |
> Since you pretty much invented your own language
Expressions are in PostgreSql syntax.
I expected that there is some way to force PostgreSql to evaluate them at
runtime using something like pgsql EXECUTE
For example,
'Hello <<firstname||'' ''||lastname>>!'
should be converted (inverted) to
'Hello ' || firstname||' '||lastname || '!'
and then pgsql EXECUTE can be used to perform text merge just like .asp
pages are pre-processed and compiled.
How to do this is PostgreSql or in C# in MONO/.NET ?
> Personally I think you're using a bad example here, as usually names don't
> just involve firstname and surname, but frequently have infixes, suffixes
> and titles and such. Not all of those fields are going to have values for
> every person in your database. What happens if you don't have a Tom Lane,
> but a mr. Lane, or if you have both but want to address a person more
> politely?
COALESCE(), CASE WHEN and other pgsql constructs can be used to create
correct address expressions from any data.
Andrus.
From | Date | Subject | |
---|---|---|---|
Next Message | Andrus | 2010-03-28 20:48:28 | Re: Splitting text column to multiple rows |
Previous Message | Faheem Mitha | 2010-03-28 20:05:31 | Re: simultaneously reducing both memory usage and runtime for a query |