dcm4chee query study availability

This query can be useful to list in a range of time the sudies wich availability is ONLINE (0= online, 1= nearline).

SELECT distinct(study.study_iuid)
FROM series
JOIN study ON series.study_fk = study.pk
JOIN patient ON study.patient_fk = patient.pk
JOIN instance ON instance.series_fk = series.pk
where study.study_datetime >= '2000-01-01' and study.study_datetime <= '2010-01-31'
and study.availability = 0 ;