enable_group_by_reordering
Controls if the query planner will produce a plan which will provide GROUP BY keys sorted in the order of keys of a child node of the plan, such as an index scan. When disabled, the query planner will produce a plan with GROUP BY keys only sorted to match the ORDER BY clause, if any. When enabled, the planner will try to produce a more efficient plan. The default value is on.
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
- on
- category
- Query Tuning / Planner Method Configuration
- context
- user
- documented
- true
- enumvals
- 未知
- extra desc
- 未知
- lang
- en
- max val
- 未知
- metadata version
- 18
- min val
- 未知
- name
- enable_group_by_reordering
- short desc
- Enables reordering of GROUP BY keys.
- source
- pg-settings-source-snapshot
- unit
- 未知
- vartype
- bool
版本定义 PG 18
Controls if the query planner will produce a plan which will provide GROUP BY keys sorted in the order of keys of a child node of the plan, such as an index scan. When disabled, the query planner will produce a plan with GROUP BY keys only sorted to match the ORDER BY clause, if any. When enabled, the planner will try to produce a more efficient plan. The default value is on.
比较版本
来源引用
定义来源
center · PostgreSQL 18 · english-manuals:751a658545df11a3c05d5ffb395b13ba312aeba8164b745f8c96f5c6ca985b0a
正文语言: en · english-manuals:751a658545df11a3c05d5ffb395b13ba312aeba8164b745f8c96f5c6ca985b0a