min_parallel_table_scan_size
Sets the minimum amount of table data that must be scanned in order for a parallel scan to be considered. For a parallel sequential scan, the amount of table data scanned is always equal to the size of the table, but when indexes are used the amount of table data scanned will normally be less. If this value is specified without units, it is taken as blocks, that is BLCKSZ bytes, typically 8kB. The default is 8 megabytes (8MB).
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
- 1024
- category
- Query Tuning / Planner Cost Constants
- context
- user
- documented
- true
- enumvals
- 未知
- extra desc
- If the planner estimates that it will read a number of table pages too small to reach this limit, a parallel scan will not be considered.
- lang
- en
- max val
- 715827882
- metadata version
- 18
- min val
- 0
- name
- min_parallel_table_scan_size
- short desc
- Sets the minimum amount of table data for a parallel scan.
- source
- pg-settings-source-snapshot
- unit
- 8kB
- vartype
- integer
版本定义 PG 18
Sets the minimum amount of table data that must be scanned in order for a parallel scan to be considered. For a parallel sequential scan, the amount of table data scanned is always equal to the size of the table, but when indexes are used the amount of table data scanned will normally be less. If this value is specified without units, it is taken as blocks, that is BLCKSZ bytes, typically 8kB. The default is 8 megabytes (8MB).
比较版本
来源引用
定义来源
center · PostgreSQL 18 · english-manuals:bc7dbc9e640863b437906084eebcc3f51da5ac787160a00adcdfa6ae7dc31d58
正文语言: en · english-manuals:bc7dbc9e640863b437906084eebcc3f51da5ac787160a00adcdfa6ae7dc31d58