geqo_generations
Controls the number of generations used by GEQO, that is the number of iterations of the algorithm. It must be at least one, and useful values are in the same range as the pool size. If it is set to zero (the default setting) then a suitable value is chosen based on geqo_pool_size.
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
- 0
- category
- Query Tuning / Genetic Query Optimizer
- context
- user
- documented
- true
- enumvals
- 未知
- extra desc
- 0 means use a suitable default value.
- lang
- en
- max val
- 2147483647
- metadata version
- 18
- min val
- 0
- name
- geqo_generations
- short desc
- GEQO: number of iterations of the algorithm.
- source
- pg-settings-source-snapshot
- unit
- 未知
- vartype
- integer
版本定义 PG 18
Controls the number of generations used by GEQO, that is the number of iterations of the algorithm. It must be at least one, and useful values are in the same range as the pool size. If it is set to zero (the default setting) then a suitable value is chosen based on geqo_pool_size.
比较版本
来源引用
定义来源
center · PostgreSQL 18 · english-manuals:de36c19a7a0407a5800e3abd7e08c922d84e71e11428331a2ed000f3bb4df54c
正文语言: en · english-manuals:de36c19a7a0407a5800e3abd7e08c922d84e71e11428331a2ed000f3bb4df54c