用于 SELECT DISTINCT 的增量排序
已记录的来源状态与原始语言说明；缺少版本证据时明确标为未知。
来源快照记录 PostgreSQL 8.1–18 的变化节点；历史矩阵独立记录 7.4–18 的状态。两者均未记录 PostgreSQL 19 或 20 的支持状态，较新版本明确保留为未知。这些来源声明与运行测量相互独立。
性能
说明
SELECT DISTINCT 查询现在可以使用增量排序。
所选版本: PostgreSQL 18
支持
比较版本
原始文档链接
已记录旧标识: 398
完整来源事实与出处
yaml · center · 1dd22bf9a7f3ec325b894e2836fda535a25529f246a94dd41d6abbfe9997f7fd
{
"Key": "incremental-sort-for-select-distinct",
"SourceKind": "yaml",
"SourceDatabase": "center",
"SourceTable": "featurematrix.yaml",
"SourceKey": "Incremental sort for SELECT DISTINCT",
"SourceHash": "1dd22bf9a7f3ec325b894e2836fda535a25529f246a94dd41d6abbfe9997f7fd",
"Name": "Incremental sort for SELECT DISTINCT",
"NameLocale": "en",
"GroupKey": "performance",
"GroupName": "Performance",
"GroupLocale": "en",
"Ordinal": 22,
"GroupOrder": 5,
"Facts": {
"feature": {
"description": "Queries with `SELECT DISTINCT` can use [incremental sort](https://www.postgresql.org/docs/16/runtime-config-query.html#GUC-ENABLE-INCREMENTAL-SORT).",
"name": "Incremental sort for SELECT DISTINCT",
"versions": {
"16": "Yes"
}
},
"group": "Performance",
"versions": {
"max": 18,
"min": 8.1
}
},
"Cells": [
{
"Version": "10",
"State": "no",
"EvidenceKind": "yaml-default-no",
"TransitionVersion": "",
"Supported": false,
"Original": "No"
},
{
"Version": "11",
"State": "no",
"EvidenceKind": "yaml-default-no",
"TransitionVersion": "",
"Supported": false,
"Original": "No"
},
{
"Version": "12",
"State": "no",
"EvidenceKind": "yaml-default-no",
"TransitionVersion": "",
"Supported": false,
"Original": "No"
},
{
"Version": "13",
"State": "no",
"EvidenceKind": "yaml-default-no",
"TransitionVersion": "",
"Supported": false,
"Original": "No"
},
{
"Version": "14",
"State": "no",
"EvidenceKind": "yaml-default-no",
"TransitionVersion": "",
"Supported": false,
"Original": "No"
},
{
"Version": "15",
"State": "no",
"EvidenceKind": "yaml-default-no",
"TransitionVersion": "",
"Supported": false,
"Original": "No"
},
{
"Version": "16",
"State": "yes",
"EvidenceKind": "yaml-transition",
"TransitionVersion": "16",
"Supported": true,
"Original": "Yes"
},
{
"Version": "17",
"State": "yes",
"EvidenceKind": "yaml-transition",
"TransitionVersion": "16",
"Supported": true,
"Original": "Yes"
},
{
"Version": "18",
"State": "yes",
"EvidenceKind": "yaml-transition",
"TransitionVersion": "16",
"Supported": true,
"Original": "Yes"
},
{
"Version": "8.1",
"State": "no",
"EvidenceKind": "yaml-default-no",
"TransitionVersion": "",
"Supported": false,
"Original": "No"
},
{
"Version": "8.2",
"State": "no",
"EvidenceKind": "yaml-default-no",
"TransitionVersion": "",
"Supported": false,
"Original": "No"
},
{
"Version": "8.3",
"State": "no",
"EvidenceKind": "yaml-default-no",
"TransitionVersion": "",
"Supported": false,
"Original": "No"
},
{
"Version": "8.4",
"State": "no",
"EvidenceKind": "yaml-default-no",
"TransitionVersion": "",
"Supported": false,
"Original": "No"
},
{
"Version": "9.0",
"State": "no",
"EvidenceKind": "yaml-default-no",
"TransitionVersion": "",
"Supported": false,
"Original": "No"
},
{
"Version": "9.1",
"State": "no",
"EvidenceKind": "yaml-default-no",
"TransitionVersion": "",
"Supported": false,
"Original": "No"
},
{
"Version": "9.2",
"State": "no",
"EvidenceKind": "yaml-default-no",
"TransitionVersion": "",
"Supported": false,
"Original": "No"
},
{
"Version": "9.3",
"State": "no",
"EvidenceKind": "yaml-default-no",
"TransitionVersion": "",
"Supported": false,
"Original": "No"
},
{
"Version": "9.4",
"State": "no",
"EvidenceKind": "yaml-default-no",
"TransitionVersion": "",
"Supported": false,
"Original": "No"
},
{
"Version": "9.5",
"State": "no",
"EvidenceKind": "yaml-default-no",
"TransitionVersion": "",
"Supported": false,
"Original": "No"
},
{
"Version": "9.6",
"State": "no",
"EvidenceKind": "yaml-default-no",
"TransitionVersion": "",
"Supported": false,
"Original": "No"
}
],
"Texts": [
{
"Locale": "en",
"Title": "Incremental sort for SELECT DISTINCT",
"BodyHTML": "\u003cp\u003eQueries with \u003ccode\u003eSELECT DISTINCT\u003c/code\u003e can use \u003ca href=\"https://www.postgresql.org/docs/16/runtime-config-query.html#GUC-ENABLE-INCREMENTAL-SORT\" rel=\"nofollow\"\u003eincremental sort\u003c/a\u003e.\u003c/p\u003e\n",
"SourceHash": "1dd22bf9a7f3ec325b894e2836fda535a25529f246a94dd41d6abbfe9997f7fd",
"ContentHash": "19dbfb241f43312e2794c2bf131a267adde0a6afd10cdab100e2235b0ece451d",
"Payload": {
"description": "Queries with `SELECT DISTINCT` can use [incremental sort](https://www.postgresql.org/docs/16/runtime-config-query.html#GUC-ENABLE-INCREMENTAL-SORT).",
"name": "Incremental sort for SELECT DISTINCT",
"versions": {
"16": "Yes"
}
}
},
{
"Locale": "zh-Hans",
"Title": "用于 SELECT DISTINCT 的增量排序",
"BodyHTML": "\u003cp\u003e\u003ccode\u003eSELECT DISTINCT\u003c/code\u003e 查询现在可以使用增量排序。\u003c/p\u003e\n",
"SourceHash": "071091951021357a5f492adb04caed6febf4d315ac2626ca027a48dd8ec01d50",
"ContentHash": "0a246978ee2201d0cd303e04ef7dcfe325114b5244e229e0d21a0c4a9d718f01",
"Payload": {
"description": "`SELECT DISTINCT` 查询现在可以使用增量排序。",
"name": "用于 SELECT DISTINCT 的增量排序"
}
}
],
"GroupTitles": {
"en": "Performance",
"zh-Hans": "性能"
},
"LegacyIDs": [
"398"
]
}