↑↓ 选择↵ 打开⌫ 切换范围完整搜索

PG.CENTER 连接 PostgreSQL 文档、百科与生态知识。由 Pigsty 维护。

Wiki / 执行计划

Sort

Sorts rows from its child according to the plan sort keys.

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。

Core node tag
T_Sort
Structured EXPLAIN Node Type
Sort
Inputs
One child plan
Output
Sorted tuples
Executor initializer
ExecInitSort
Memory mechanism
tuplesort
evidence kind
source and documentation
explain names
Sort
explain prefixes
Parallel, Async
node tag
T_Sort
parallel callbacks
ExecSortEstimate, ExecSortInitializeDSM, ExecSortInitializeWorker, ExecSortRetrieveInstrumentation
partial modes
未知
runtime verified
false
strategies
未知

版本定义 PG 18

Sorts rows from its child according to the plan sort keys.

EXPLAIN labels in this source build

Text-format labelStructured node identity
SortSort

比较版本

完整来源事实

memory

{"description":"The node passes work_mem to tuplesort. Sorting can use memory or temporary files; the actual method and space use depend on the input and plan.","evidence":[{"archive_sha256":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f","label":"src/backend/executor/nodeSort.c","path":"src/backend/executor/nodeSort.c","sha256":"47c6b983626e15e112f904040e96d43190ae4b3226e7cd2b27234dc95adf54a2","url":"https://ftp.postgresql.org/pub/source/v18.6/postgresql-18.6.tar.bz2"},{"archive_sha256":"555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f","label":"src/backend/utils/sort/tuplesort.c","path":"src/backend/utils/sort/tuplesort.c","sha256":"509d4cef598613bbf0725f697e1e1e33f3dfc8debed20169a6c4bf1ac9e5c2e3","url":"https://ftp.postgresql.org/pub/source/v18.6/postgresql-18.6.tar.bz2"}],"mechanism":"tuplesort","source_notes":["Sorts tuples from the outer subtree of the node using tuplesort, which saves the results in a temporary file or memory. After the initial call, returns a tuple from the file with each call."]}

source inventory

{"executor":"src/backend/executor/execProcnode.c","explain":"src/backend/commands/explain.c","implementation":"src/backend/executor/nodeSort.c"}

来源引用

完整定义与证据 JSON

定义来源

center · PostgreSQL 18 · 555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f

正文语言: en · 555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f