PgAdmin窗口:
Java窗口:ide
1. 時間戳Long轉Timestamp設計
select TO_TIMESTAMP(1512490630) as time from tablename;blog
2. TimeStamp轉時間戳Long圖片
轉10位
SELECT EXTRACT(epoch FROM NOW());
SELECT EXTRACT(epoch FROM CAST(‘2017-12-06 00:17:10’ AS TIMESTAMP));it
轉13位 轉13位向下取整
SELECT EXTRACT(epoch FROM NOW())*1000,floor(EXTRACT(epoch FROM NOW())*1000);table
4. String轉Date 只能獲得年月日,得不到時分秒,怪哉,在這篇博文裏找到了答案,設計如此…class
select to_date(‘2020-08-28 12:55:05’)date
5. TimeStamp 10位,13位 轉Stringselect
select to_char(to_timestamp(1512490630), ‘YYYY-MM-DD HH24:MI:SS’);
SELECT to_char(to_timestamp(t.create_time / 1000), ‘YYYY-MM-DD HH24:MI:SS’);im
10位轉String SELECT to_char(to_timestamp(t.create_time / 1000), ‘YYYY-MM-DD HH24:MI:SS’)