INSERT RULE - Mailing list pgsql-performance

From Pailloncy Jean-Gérard
Subject INSERT RULE
Date
Msg-id A0654D6A-9D44-11D8-971A-000A95DE2550@gdr-isis.enst.fr
Whole thread Raw
Responses Re: INSERT RULE
List pgsql-performance
Hi,

I test a configuration where one table is divided in 256 sub-table.
And I use a RULE to offer a single view to the data.

For INSERT I have create 256 rules like:
CREATE RULE ndicti_000 AS ON INSERT TO ndict
     WHERE (NEW.word_id & 255) = 000 DO INSTEAD
     INSERT INTO ndict_000 VALUES( NEW.url_id, 000, NEW.intag);
CREATE RULE ndicti_001 AS ON INSERT TO ndict
     WHERE (NEW.word_id & 255) = 001 DO INSTEAD
     INSERT INTO ndict_001 VALUES( NEW.url_id, 001, NEW.intag);
And that works, a bit slow.

I try to do:
CREATE RULE ndicti AS ON INSERT TO ndict
     DO INSTEAD INSERT INTO 'ndict_' || (NEW.word_id & 255)
     VALUES( NEW.url_id, NEW.word_id, NEW.intag);
I got an error on 'ndict_' .
I did not found the right syntax.

Any help is welcomed.


Cordialement,
Jean-Gérard Pailloncy

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