instruction: what was the last height of patient 027-64792 when they visited the hospital first time.
response: SELECT patient.admissionheight FROM patient WHERE patient.patienthealthsystemstayid IN (SELECT patient.patienthealthsystemstayid FROM patient WHERE patient.uniquepid = '027-64792' AND NOT patient.hospitaldischargetime IS NULL ORDER BY patient.hospitaladmittime LIMIT 1) AND NOT patient.admissionheight IS NULL ORDER BY patient.unitadmittime DESC LIMIT 1