Le jeu 04/07/2002 à 23:32, Arjen van der Meijden a écrit :
> How about this hint in the postgresql-manual:
>
> "Tip: Values of the boolean type cannot be cast directly to other
> types (e.g., CAST (boolval AS integer) does not work). This can be
> accomplished using the CASE expression: CASE WHEN boolval THEN 'value if
> true' ELSE 'value if false' END. See also Section 4.12. "
>
> For more information:
> http://www.postgresql.org/idocs/index.php?datatype-boolean.html
> and
> http://www.postgresql.org/idocs/index.php?functions-conditional.html
I tried that :
CREATE RULE boolean_return AS ON SELECT TO DOCUMENT DO INSTEAD SELECT document_id, workflow_id,
type_document_id, image_id, theme_id, document_version, document_surtitre, document_titre,
document_chapeau, document_synthese, document_corps, document_pdf, document_date_creation,
document_mot_clef, document_online, document_valid, CASE document_online WHEN TRUE THEN 1
WHEN FALSE THEN 0 END, CASE document_valid WHEN TRUE THEN 1 WHEN FALSE THEN 0
END FROM document;
And, that doesn't work either...
psql:cnambo_proc_stock.sql:76: ERROR: select rule's target list has too
many entries
>
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