列级别排序规则支持
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.
No translation of this description is recorded. The original Chinese description is shown. The source label is retained in Chinese; no translated label is recorded.
国际化
Description
以前排序规则只能在创建数据库时设置。现在可以通过 SQL 标准的 COLLATE 子句为每个列、域、索引或表达式设置排序规则。
Selected version: PostgreSQL 18
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Original documentation links
Related source snapshot entry · The original source supplies this relationship; each matrix retains its own states.
Complete source facts and provenance
legacy · center · 2bd747e8827dd9e491eec00e53f670645c64083a4335495e80136c8c91014f5c
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