CREATE STATISTICS - "OR" 和 "IN/ANY" 统计信息
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.
性能
Description
扩展统计信息可以帮助查询规划器为具有 "OR" 子句以及 "IN/ANY" 列表查找的查询提供更好的计划。更多信息请参见 https://www.postgresql.org/docs/13/planner-stats.html#PLANNER-STATS-EXTENDED
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 · a517c2d6a3f3a9c187394829a420d3d199303616a7e8814286c8dacfe61801d6
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