🔗 https://school.programmers.co.kr/learn/courses/30/lessons/132201
SELECT PT_NAME, PT_NO, GEND_CD, AGE,
CASE WHEN TLNO IS NULL THEN 'NONE' ELSE TLNO END AS TLNO
FROM PATIENT
WHERE GEND_CD ='W' and AGE <= '12'
ORDER BY AGE DESC, PT_NAME ASC🔗 https://school.programmers.co.kr/learn/courses/30/lessons/132201
SELECT PT_NAME, PT_NO, GEND_CD, AGE,
CASE WHEN TLNO IS NULL THEN 'NONE' ELSE TLNO END AS TLNO
FROM PATIENT
WHERE GEND_CD ='W' and AGE <= '12'
ORDER BY AGE DESC, PT_NAME ASC