Invalid use of group function

[okoweb]

Bonjour,
J'ai ceci qui roule très bien :

Code :

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SELECT d.noms AS noms, s.genre AS sexe, 
COUNT(dl.id_legis) AS total_legis, GROUP_CONCAT(CAST(dl.id_legis AS CHAR) ORDER BY dl.id_legis SEPARATOR ", " ) AS liste_legis, 
COUNT(DISTINCT pp.id_parti) AS total_parti, GROUP_CONCAT(DISTINCT pp.sigle ORDER BY pp.id_parti SEPARATOR ", " ) AS liste_parti,
COUNT(DISTINCT dl.id_dpt) AS total_dpt, GROUP_CONCAT(DISTINCT d2.libelledpt ORDER BY d2.libelledpt SEPARATOR ", " ) AS liste_dpt,
r.libelleregion AS region
FROM deputes AS d
LEFT JOIN sexes AS s ON d.sexe = s.id_sexe
LEFT JOIN depute_legislatures AS dl ON dl.id_depute = d.id_depute
LEFT JOIN partis_politiques AS pp ON dl.id_parti = pp.id_parti
LEFT JOIN departements AS d2 ON d2.iddpt = dl.id_dpt
LEFT JOIN regions AS r ON r.idregion = d2.idregion
WHERE d.sexe = 1
GROUP BY dl.id_depute 
HAVING total_legis > 1
ORDER BY total_legis DESC, d.noms

Ci haut est la requête complète mais c'est à cette parti qu'est le problème

GROUP_CONCAT(DISTINCT pp.sigle ORDER BY pp.id_parti SEPARATOR ", " ) AS liste_parti

Quand j'ajoute COUNT(dl.id_legis) dans le GROUP_CONCAT de cette façon:

Code :

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GROUP_CONCAT(COUNT(dl.id_legis), CAST(dl.id_legis AS CHAR) ORDER BY dl.id_legis SEPARATOR ", " ) AS liste_legis

J'ai cette erreur :

Invalid use of group function

Qu'est-ce qui ne tient pas?

Merci d'avance...

[Antoun]

Tu n'as pas le droit d'imbriquer des fonctions d'agrégation... autrement dit, mettre un COUNT dans un GROUP_CONCAT est interdit (et aberrant).

Est-ce que tu ne veux pas tout simplement faire ça ?

Code :

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CONCAT(COUNT(dl.id_legis), 
  ', ', 
  GROUP_CONCAT(CAST(dl.id_legis AS CHAR) ORDER BY dl.id_legis SEPARATOR ', ' )
) AS liste_legis