清理使用的可见性映射
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。
VACUUM 与维护
说明
可见性映射记录页面的全可见状态，使 VACUUM 能够跳过无需扫描的页面，从而减少清理开销。
所选版本: PostgreSQL 18
支持
比较版本
原始文档链接
已记录旧标识: 158
完整来源事实与出处
yaml · center · 1dd22bf9a7f3ec325b894e2836fda535a25529f246a94dd41d6abbfe9997f7fd
{
"Key": "visibility-map-for-vacuuming",
"SourceKind": "yaml",
"SourceDatabase": "center",
"SourceTable": "featurematrix.yaml",
"SourceKey": "Visibility Map for Vacuuming",
"SourceHash": "1dd22bf9a7f3ec325b894e2836fda535a25529f246a94dd41d6abbfe9997f7fd",
"Name": "Visibility Map for Vacuuming",
"NameLocale": "en",
"GroupKey": "vacuum-and-maintenance",
"GroupName": "VACUUM and Maintenance",
"GroupLocale": "en",
"Ordinal": 7,
"GroupOrder": 16,
"Facts": {
"feature": {
"description": "This reduces the overhead of vacuuming as the visibility map tracks only the pages that need to be vacuumed.",
"name": "Visibility Map for Vacuuming",
"versions": {
"8.4": "Yes"
}
},
"group": "VACUUM and Maintenance",
"versions": {
"max": 18,
"min": 8.1
}
},
"Cells": [
{
"Version": "10",
"State": "yes",
"EvidenceKind": "yaml-transition",
"TransitionVersion": "8.4",
"Supported": true,
"Original": "Yes"
},
{
"Version": "11",
"State": "yes",
"EvidenceKind": "yaml-transition",
"TransitionVersion": "8.4",
"Supported": true,
"Original": "Yes"
},
{
"Version": "12",
"State": "yes",
"EvidenceKind": "yaml-transition",
"TransitionVersion": "8.4",
"Supported": true,
"Original": "Yes"
},
{
"Version": "13",
"State": "yes",
"EvidenceKind": "yaml-transition",
"TransitionVersion": "8.4",
"Supported": true,
"Original": "Yes"
},
{
"Version": "14",
"State": "yes",
"EvidenceKind": "yaml-transition",
"TransitionVersion": "8.4",
"Supported": true,
"Original": "Yes"
},
{
"Version": "15",
"State": "yes",
"EvidenceKind": "yaml-transition",
"TransitionVersion": "8.4",
"Supported": true,
"Original": "Yes"
},
{
"Version": "16",
"State": "yes",
"EvidenceKind": "yaml-transition",
"TransitionVersion": "8.4",
"Supported": true,
"Original": "Yes"
},
{
"Version": "17",
"State": "yes",
"EvidenceKind": "yaml-transition",
"TransitionVersion": "8.4",
"Supported": true,
"Original": "Yes"
},
{
"Version": "18",
"State": "yes",
"EvidenceKind": "yaml-transition",
"TransitionVersion": "8.4",
"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": "yes",
"EvidenceKind": "yaml-transition",
"TransitionVersion": "8.4",
"Supported": true,
"Original": "Yes"
},
{
"Version": "9.0",
"State": "yes",
"EvidenceKind": "yaml-transition",
"TransitionVersion": "8.4",
"Supported": true,
"Original": "Yes"
},
{
"Version": "9.1",
"State": "yes",
"EvidenceKind": "yaml-transition",
"TransitionVersion": "8.4",
"Supported": true,
"Original": "Yes"
},
{
"Version": "9.2",
"State": "yes",
"EvidenceKind": "yaml-transition",
"TransitionVersion": "8.4",
"Supported": true,
"Original": "Yes"
},
{
"Version": "9.3",
"State": "yes",
"EvidenceKind": "yaml-transition",
"TransitionVersion": "8.4",
"Supported": true,
"Original": "Yes"
},
{
"Version": "9.4",
"State": "yes",
"EvidenceKind": "yaml-transition",
"TransitionVersion": "8.4",
"Supported": true,
"Original": "Yes"
},
{
"Version": "9.5",
"State": "yes",
"EvidenceKind": "yaml-transition",
"TransitionVersion": "8.4",
"Supported": true,
"Original": "Yes"
},
{
"Version": "9.6",
"State": "yes",
"EvidenceKind": "yaml-transition",
"TransitionVersion": "8.4",
"Supported": true,
"Original": "Yes"
}
],
"Texts": [
{
"Locale": "en",
"Title": "Visibility Map for Vacuuming",
"BodyHTML": "\u003cp\u003eThis reduces the overhead of vacuuming as the visibility map tracks only the pages that need to be vacuumed.\u003c/p\u003e\n",
"SourceHash": "1dd22bf9a7f3ec325b894e2836fda535a25529f246a94dd41d6abbfe9997f7fd",
"ContentHash": "70823117c73dbbe05c556143b0752f8a9bf2603db7e88074631f7aa4efaa59b1",
"Payload": {
"description": "This reduces the overhead of vacuuming as the visibility map tracks only the pages that need to be vacuumed.",
"name": "Visibility Map for Vacuuming",
"versions": {
"8.4": "Yes"
}
}
},
{
"Locale": "zh-Hans",
"Title": "清理使用的可见性映射",
"BodyHTML": "\u003cp\u003e可见性映射记录页面的全可见状态，使 VACUUM 能够跳过无需扫描的页面，从而减少清理开销。\u003c/p\u003e\n",
"SourceHash": "071091951021357a5f492adb04caed6febf4d315ac2626ca027a48dd8ec01d50",
"ContentHash": "3a53ab6f1b391ca3c4c27c26a13ec3fa003028debec691c362f9b9f264dd6704",
"Payload": {
"description": "可见性映射记录页面的全可见状态，使 VACUUM 能够跳过无需扫描的页面，从而减少清理开销。",
"name": "清理使用的可见性映射"
}
}
],
"GroupTitles": {
"en": "VACUUM and Maintenance",
"zh-Hans": "VACUUM 与维护"
},
"LegacyIDs": [
"158"
]
}