ครั้งล่าสุดเมื่อเดือนที่แล้ว ผู้ป่วย 19175 กำหนดให้ d5w และ pantoprazole พร้อมกันเมื่อใด? ไม่จำเป็นต้องใช้ตารางทั้งหมด
the last time the previous month, when was patient 19175 prescribed d5w and pantoprazole at the same time?It is not neccessary to use all the tables.
 d_labitems:  row_id [ number]  itemid [ number]  label [ text] 
SELECT t1.startdate FROM (SELECT admissions.subject_id, prescriptions.startdate FROM prescriptions JOIN admissions ON prescriptions.hadm_id = admissions.hadm_id WHERE prescriptions.drug = 'd5w' AND admissions.subject_id = 19175 AND DATETIME(prescriptions.startdate, 'start of month') = DATETIME(CURRENT_TIME(), 'start of month', '-1 month')) AS t1 JOIN (SELECT admissions.subject_id, prescriptions.startdate FROM prescriptions JOIN admissions ON prescriptions.hadm_id = admissions.hadm_id WHERE prescriptions.drug = 'pantoprazole' AND admissions.subject_id = 19175 AND DATETIME(prescriptions.startdate, 'start of month') = DATETIME(CURRENT_TIME(), 'start of month', '-1 month')) AS t2 ON t1.subject_id = t2.subject_id WHERE DATETIME(t1.startdate) = DATETIME(t2.startdate) ORDER BY t1.startdate DESC LIMIT 1