多列 B-树 索引上的跳跃扫描
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。
索引和约束
说明
对于在一个或多个前导索引列上缺少 = 条件的查询，多列 B-树 索引现在可以使用跳跃扫描来改善执行时间。
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": "skip-scan-on-multicolumn-b-tree-indexes",
"SourceKind": "yaml",
"SourceDatabase": "center",
"SourceTable": "featurematrix.yaml",
"SourceKey": "Skip scan on multicolumn B-tree indexes",
"SourceHash": "1dd22bf9a7f3ec325b894e2836fda535a25529f246a94dd41d6abbfe9997f7fd",
"Name": "Skip scan on multicolumn B-tree indexes",
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"GroupKey": "indexing-constraints",
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"name": "Skip scan on multicolumn B-tree indexes",
"versions": {
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}
},
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},
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{
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}
],
"Texts": [
{
"Locale": "en",
"Title": "Skip scan on multicolumn B-tree indexes",
"BodyHTML": "\u003cp\u003eImprove execution time for queries that omit an \u003ccode\u003e=\u003c/code\u003e condition on one or more prefix index columns.\u003c/p\u003e\n",
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}
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},
{
"Locale": "zh-Hans",
"Title": "多列 B-树 索引上的跳跃扫描",
"BodyHTML": "\u003cp\u003e对于在一个或多个前导索引列上缺少 \u003ccode\u003e=\u003c/code\u003e 条件的查询，多列 B-树 索引现在可以使用跳跃扫描来改善执行时间。\u003c/p\u003e\n",
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}
}