PG10 中pg_current_wal_insert_lsn()和pg_walfile_name()的使用

nasa=# select pg_current_wal_insert_lsn(); pg_current_wal_insert_lsn --------------------------- 0/17A0F98(1 row)nasa=# select pg_walfile_name('0/17A0F98');------------>>>>注意此处的单引号     pg_walfile_name      -------------------------- 000000010000000000000001(1 row)nasa=# select version();                                                  version                                                   ------------------------------------------------------------------------------------------------------------ PostgreSQL 10beta2 on x86_64-pc-linux-gnu, compiled by gcc (GCC) 4.8.5 20150623 (Red Hat 4.8.5-16), 64-bit(1 row)nasa=# 

参考自:
https://www.postgresql.org/docs/10/static/functions-admin.html