parallel_tuple_cost
Sets the planner's estimate of the cost of transferring one tuple from a parallel worker process to another process. The default is 0.1.
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
- 0.1
- category
- Query Tuning / Planner Cost Constants
- context
- user
- documented
- true
- enumvals
- 未知
- extra desc
- 未知
- lang
- en
- max val
- 1.79769e+308
- metadata version
- 18
- min val
- 0
- name
- parallel_tuple_cost
- short desc
- Sets the planner's estimate of the cost of passing each tuple (row) from worker to leader backend.
- source
- pg-settings-source-snapshot
- unit
- 未知
- vartype
- real
版本定义 PG 18
Sets the planner's estimate of the cost of transferring one tuple from a parallel worker process to another process. The default is 0.1.
比较版本
来源引用
定义来源
center · PostgreSQL 18 · english-manuals:e102580d1940b04ba44225a8d2f2bbf1e0736e7d077c365416c9c13ead447e48
正文语言: en · english-manuals:e102580d1940b04ba44225a8d2f2bbf1e0736e7d077c365416c9c13ead447e48