lightdb生成pwr快照

[lightdb@hs-10-20-30-199 ~]$ ltsql -p5432
ltsql (13.3-22.2)
Type "help" for help.

lightdb@postgres=# select show_samples();
            show_samples             
-------------------------------------
 (1,"2022-08-19 19:00:00+08",t,,,)
 (2,"2022-08-19 19:10:00+08",t,,,)
 (3,"2022-08-19 19:20:00+08",t,,,)
 (4,"2022-08-19 19:30:00+08",t,,,)
 (5,"2022-08-19 19:40:00+08",t,,,)
 (6,"2022-08-19 19:44:03+08",t,,,)
 (7,"2022-08-19 19:46:43+08",t,,,)