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Le 21/10/2020 à 22:56, Stéphane Santon a écrit :
SELECT "a"."nom", "a"."date_absence", "b"."lastdate"
FROM "absencesCsv3" "a"
INNER JOIN (
    SELECT "nom", MAX( "date_absence" ) "lastdate"
    FROM "absencesCsv3"
    GROUP BY "nom" ) "b"
ON "a"."nom" = "b"."nom"
ORDER BY "nom", "date_absence"

Mais le champ lastdate du MAX reste vide comme pour le COUNT...

Si je ne fais rien que :
SELECT nom, MAX(date_absence) lastdate from absencesCsv3 GROUP BY nom
Probablement parce que ma table est du texte issu de CSV et non une vraie table HSQLDB...

Exact,  chez moi, avec une base HSQLDB interne ça donne le bon résultat. Mais il faut que la date soit au format Date, sinon le résultat est faux.

Bonne soirée

--
Jean-Michel Coste


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