| From: | Richard Huxton <dev(at)archonet(dot)com> |
|---|---|
| To: | email_daniel_h(at)yahoo(dot)com(dot)br, pgsql-sql(at)postgresql(dot)org |
| Subject: | Re: Functional index and string concatenation |
| Date: | 2004-03-08 17:38:46 |
| Message-ID: | 200403081738.46011.dev@archonet.com |
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| Lists: | pgsql-sql |
On Monday 08 March 2004 16:02, Daniel Henrique Alves Lima wrote:
> Yes, i was searching for the name of equivalent function to "||"
> operator...
>
> Now, i've got a new problem: I need to concat three values (two
> column values and a sepator constant). But from documentation: " The
> function in the index definition can take more than one argument, but
> they must be table columns, not constants" and "there cannot be
> multicolumn indexes that contain function calls".
>
> Maybe i should to create a new pgsql function.
Yes - a wrapper function is the standard solution. I don't think you need to
do this in 7.4 though.
--
Richard Huxton
Archonet Ltd
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