pilih entri terbaru

Proposal lainnya benar tetapi solusi paling ringkas dan tercepat kemungkinan besar terjadi ketika Anda menggunakan FIRST_VALUE dan LAST_VALUE Fungsi Analitik

SELECT DISTINCT
   FIRST_VALUE(LOCATION_ID) OVER (PARTITION BY PERSON_ID ORDER BY THE_DATE 
             ROWS BETWEEN UNBOUNDED PRECEDING AND UNBOUNDED FOLLOWING) AS LOCATION_ID, 
   PERSON_ID, 
   MAX(THE_DATE) OVER (PARTITION BY PERSON_ID) AS LAST_DATE
FROM YOUR_TABLE;

Orang lain lebih suka

SELECT 
   MAX(LOCATION_ID) KEEP (DENSE_RANK FIRST ORDER BY DATE) as LOCATION, 
   PERSON_ID, 
   MAX(DATE) as LAST_DATE
FROM YOUR_TABLE
GROUP BY PERSON_ID;

yang melakukan hal yang sama, tetapi saya tidak begitu akrab dengan klausa ini. Lihat agregate_function KEEP