[root@iZ2ze42h23sbjp20h2z4r7Z ~]# PGUSER="BASIC\$tpcuser" PGPASSWORD=tpcuser psql -h hgpostcn-cn-0674qehum001-cn-beijing-vpc-st.hologres.aliyuncs.com -p 80 -d postgres
psql (13.23, server 11.3)
Type "help" for help.

postgres=# select current_timestamp;
       current_timestamp       
-------------------------------
 2026-04-15 11:20:14.914562+08
(1 row)