Thread: no description function pg_sequence_last_value in the documents，but using \df+ pg_sequence_last_value get this function in the psql
no description function pg_sequence_last_value in the documents，but using \df+ pg_sequence_last_value get this function in the psql
[pg170@localhost ~]$ psql -d postgres
psql -d postgres
psql (17.0)
输入 "help" 来获取帮助信息.
postgres=# \df+ pg_sequence_last_value;
函数列表
架构模式 | 名称 | 结果数据类型 | 参数数据类型 | 类型 | 挥发性 | 平行 | 拥有者 | 安全 | 存取权限 | 程序语言 | 内部名称 | 描述
------------+------------------------+--------------+--------------+------+----------+----------+--------+--------+----------+----------+------------------------+---------------------
pg_catalog | pg_sequence_last_value | bigint | regclass | 函数 | 不稳定性 | 不安全的 | pg170 | 调用者 | | internal | pg_sequence_last_value | sequence last value
(1 行记录)
postgres=# select version();
version
--------------------------------------------------------------------------------------------------------
PostgreSQL 17.0 on x86_64-pc-linux-gnu, compiled by gcc (GCC) 8.5.0 20210514 (Red Hat 8.5.0-3), 64-bit
(1 行记录)
postgres=#
Re: no description function pg_sequence_last_value in the documents，but using \df+ pg_sequence_last_value get this function in the psql
"yanliang lei" <msdnchina@163.com> writes:
> pg_catalog | pg_sequence_last_value | bigint | regclass | º¯Êý | ²»Îȶ¨ÐÔ | ²»°²ȫµÄ | pg170 | µ÷ÓÃÕß |
| internal | pg_sequence_last_value | sequence last value
I believe that's only intended as support for the pg_sequences view,
so it's not separately documented. There are a fair number of other
view-supporting functions that we don't document either.
regards, tom lane