postgre12.18show search_path没有返回值

请问各位老大，这个是什么情况？

[postgres@vm01 ~]$ psql
Password for user postgres:
psql (12.18)
Type "help" for help.

postgres=# select version();
version
--------------------------------------------------------------------------------------------------------------
PostgreSQL 12.18 on x86_64-pc-linux-gnu, compiled by gcc (GCC) 4.8.5 20150623 (Red Hat 4.8.5-44.0.3), 64-bit
(1 row)

postgres=# show search_path

postgres-# \q
[postgres@vm01 ~]$ psql -h 10.10.10.2 -U erp_etl -d erp -p 1921
Password for user erp_etl:
psql (12.18)
Type "help" for help.

erp=> show search_path