update

PostgreSQL/time.sql

@@ -8,3 +8,6 @@ select msg_time at time zone 'Asia/Shanghai' from msg where id = 1;
 select msg_time at time zone 'UTC+8' from msg where id = 1;
 
 select to_timestamp(1761850339) AT TIME ZONE 'Asia/Shanghai';
+
+-- 将当前时间转换为Unix时间戳
+select EXTRACT(EPOCH FROM current_timestamp(0)) - 60;