Abbreviated Keys
Recorded source states and original language descriptions. Missing version evidence stays unknown.
The source snapshot records transitions for PostgreSQL 8.1–18. The historical matrix records independent cells for 7.4–18. Neither records support for PostgreSQL 19 or 20; newer versions remain unknown. These source claims are distinct from runtime measurements.
Performance
Description
The abbreviated keys optimization can be expected to greatly enhance the performance of sorts in PostgreSQL, including those used for CREATE INDEX. Reportedly, in some cases, CREATE INDEX on text columns can be as much as an entire order of magnitude faster (3x is a more typical improvement). Numeric sorts also support the optimization.
Selected version: PostgreSQL 18
Yes
Compare versions
Original documentation links
Recorded legacy identifiers: 279
Complete source facts and provenance
yaml · center · 1dd22bf9a7f3ec325b894e2836fda535a25529f246a94dd41d6abbfe9997f7fd
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"Name": "Abbreviated Keys",
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"name": "Abbreviated Keys",
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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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],
"Texts": [
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"Title": "Abbreviated Keys",
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"name": "Abbreviated Keys",
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},
{
"Locale": "zh-Hans",
"Title": "缩写键",
"BodyHTML": "\u003cp\u003e缩写键优化可以大幅提升 PostgreSQL 中排序的性能，包括用于 CREATE INDEX 的排序。据报告，在某些情况下，文本列上的 CREATE INDEX 速度可以快整整一个数量级（3 倍是更典型的提升）。数值排序也支持此优化。\u003c/p\u003e\n",
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"name": "缩写键"
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"zh-Hans": "性能"
},
"LegacyIDs": [
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]
}