max_identifier_length
Reports the maximum identifier length. It is determined as one less than the value of NAMEDATALEN when building the server. The default value of NAMEDATALEN is 64; therefore the default max_identifier_length is 63 bytes, which can be less than 63 characters when using multibyte encodings.
英文手册覆盖始于 PostgreSQL 7.4. 来源历史与运行验证各自保留独立版本边界。
当前阅读 PG 18·选择有来源记录的版本
此版本暂无所选语言的定义，以下显示原始英文内容。
- boot val
- 63
- category
- Preset Options
- context
- internal
- documented
- true
- enumvals
- 未知
- extra desc
- 未知
- lang
- en
- max val
- 63
- metadata version
- 18
- min val
- 63
- name
- max_identifier_length
- short desc
- Shows the maximum identifier length.
- source
- pg-settings-source-snapshot
- unit
- 未知
- vartype
- integer
版本定义 PG 18
Reports the maximum identifier length. It is determined as one less than the value of NAMEDATALEN when building the server. The default value of NAMEDATALEN is 64; therefore the default max_identifier_length is 63 bytes, which can be less than 63 characters when using multibyte encodings.
比较版本
来源引用
定义来源
center · PostgreSQL 18 · english-manuals:24efe4985fe7ed9cf360109448fb94b1a0c7b834f09434f7b8f90e06cf038ffd
正文语言: en · english-manuals:24efe4985fe7ed9cf360109448fb94b1a0c7b834f09434f7b8f90e06cf038ffd