จนกระทั่ง 2 ปีที่แล้ว มีผู้ป่วยกี่รายที่ได้รับการตรวจ rad pancreaticoduodenect ภายใน 2 เดือน หลังจากได้รับการวินิจฉัยว่าเป็นภาวะหัวใจหยุดเต้น?ไม่จำเป็นต้องใช้ตารางทั้งหมดเลย
until 2 years ago, how many patients have received the rad pancreaticoduodenect within 2 months after being diagnosed with cardiac arrest?It is not neccessary to use all the tables.
 patients:  row_id [ number]  subject_id [ number]  gender [ text]  dob [ time]  dod [ time] 
SELECT COUNT(DISTINCT t1.subject_id) FROM (SELECT admissions.subject_id, diagnoses_icd.charttime FROM diagnoses_icd JOIN admissions ON diagnoses_icd.hadm_id = admissions.hadm_id WHERE diagnoses_icd.icd9_code = (SELECT d_icd_diagnoses.icd9_code FROM d_icd_diagnoses WHERE d_icd_diagnoses.short_title = 'cardiac arrest') AND DATETIME(diagnoses_icd.charttime) <= DATETIME(CURRENT_TIME(), '-2 year')) AS t1 JOIN (SELECT admissions.subject_id, procedures_icd.charttime FROM procedures_icd JOIN admissions ON procedures_icd.hadm_id = admissions.hadm_id WHERE procedures_icd.icd9_code = (SELECT d_icd_procedures.icd9_code FROM d_icd_procedures WHERE d_icd_procedures.short_title = 'rad pancreaticoduodenect') AND DATETIME(procedures_icd.charttime) <= DATETIME(CURRENT_TIME(), '-2 year')) AS t2 ON t1.subject_id = t2.subject_id WHERE t1.charttime < t2.charttime AND DATETIME(t2.charttime) BETWEEN DATETIME(t1.charttime) AND DATETIME(t1.charttime, '+2 month')