ผู้ป่วย 3229 ใน 12/2105 ได้รับการทดสอบสำหรับ po2 หรือไม่ ไม่จำเป็นต้องใช้ตารางทั้งหมด
has patient 3229 in 12/2105 been tested for the po2?It is not neccessary to use all the tables.
 microbiologyevents:  row_id [ number]  subject_id [ number]  hadm_id [ number]  charttime [ time]  spec_type_desc [ text]  org_name [ text] 
SELECT COUNT(*) > 0 FROM labevents WHERE labevents.itemid IN (SELECT d_labitems.itemid FROM d_labitems WHERE d_labitems.label = 'po2') AND labevents.hadm_id IN (SELECT admissions.hadm_id FROM admissions WHERE admissions.subject_id = 3229) AND STRFTIME('%y-%m', labevents.charttime) = '2105-12'