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KO:

SELECT macrocategoria,categoria,COUNT(DISTINCT(CONCAT_WS(',',pdqw.articolo,pdqw.codice_tessuto))) as quantity FROM prodotto_dati_quantita_web AS pdqw
		WHERE pdqw.macrocategoria = 'donna'
		GROUP BY macrocategoria, categoria

Can't create/write to file '/mnt/volume_fra1_01/mysql_temp/MYFxbVME' (Errcode: 28 - No space left on device)