主版本升级后保留规划器统计信息
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。
升级
说明
主版本升级后会保留规划器统计信息，使集簇在升级完成后更快恢复预期性能。
所选版本: PostgreSQL 18
支持
比较版本
原始文档链接
完整来源事实与出处
yaml · center · 1dd22bf9a7f3ec325b894e2836fda535a25529f246a94dd41d6abbfe9997f7fd
{
"Key": "planner-statistics-preserved-on-major-version-upgrade",
"SourceKind": "yaml",
"SourceDatabase": "center",
"SourceTable": "featurematrix.yaml",
"SourceKey": "Planner statistics preserved on major version upgrade",
"SourceHash": "1dd22bf9a7f3ec325b894e2836fda535a25529f246a94dd41d6abbfe9997f7fd",
"Name": "Planner statistics preserved on major version upgrade",
"NameLocale": "en",
"GroupKey": "upgrade",
"GroupName": "Upgrade",
"GroupLocale": "en",
"Ordinal": 1,
"GroupOrder": 11,
"Facts": {
"feature": {
"description": "PostgreSQL now keeps planner statistics through a major version upgrade, which helps an upgraded cluster reach expected performance more quickly after the upgrade. See the statistics section in [`pg_upgrade`](https://www.postgresql.org/docs/18/pgupgrade.html) for more information.",
"name": "Planner statistics preserved on major version upgrade",
"versions": {
"18": "Yes"
}
},
"group": "Upgrade",
"versions": {
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"min": 8.1
}
},
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{
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"Supported": false,
"Original": "No"
},
{
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},
{
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{
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{
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{
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{
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{
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{
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},
{
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},
{
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{
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{
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{
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},
{
"Version": "9.6",
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}
],
"Texts": [
{
"Locale": "en",
"Title": "Planner statistics preserved on major version upgrade",
"BodyHTML": "\u003cp\u003ePostgreSQL now keeps planner statistics through a major version upgrade, which helps an upgraded cluster reach expected performance more quickly after the upgrade. See the statistics section in \u003ca href=\"https://www.postgresql.org/docs/18/pgupgrade.html\" rel=\"nofollow\"\u003e\u003ccode\u003epg_upgrade\u003c/code\u003e\u003c/a\u003e for more information.\u003c/p\u003e\n",
"SourceHash": "1dd22bf9a7f3ec325b894e2836fda535a25529f246a94dd41d6abbfe9997f7fd",
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"name": "Planner statistics preserved on major version upgrade",
"versions": {
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}
}
},
{
"Locale": "zh-Hans",
"Title": "主版本升级后保留规划器统计信息",
"BodyHTML": "\u003cp\u003e主版本升级后会保留规划器统计信息，使集簇在升级完成后更快恢复预期性能。\u003c/p\u003e\n",
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"name": "主版本升级后保留规划器统计信息"
}
}
],
"GroupTitles": {
"en": "Upgrade",
"zh-Hans": "升级"
}
}