geqo_pool_size
Controls the pool size used by GEQO, that is the number of individuals in the genetic population. It must be at least two, and useful values are typically 100 to 1000. If it is set to zero (the default setting) then a suitable value is chosen based on geqo_effort and the number of tables in the query.
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_pool_size
- short desc
- GEQO: number of individuals in the population.
- source
- pg-settings-source-snapshot
- unit
- 未知
- vartype
- integer
版本定义 PG 18
Controls the pool size used by GEQO, that is the number of individuals in the genetic population. It must be at least two, and useful values are typically 100 to 1000. If it is set to zero (the default setting) then a suitable value is chosen based on geqo_effort and the number of tables in the query.
比较版本
来源引用
定义来源
center · PostgreSQL 18 · english-manuals:ee2fda8619ee86c352a0010b7a2e6e43206af7fa955eadc86ed790c4665504b5
正文语言: en · english-manuals:ee2fda8619ee86c352a0010b7a2e6e43206af7fa955eadc86ed790c4665504b5