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=# 

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