函数的 ROWS 和 COST 规范
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.
过程语言
Description
现在可以为过程函数指定 CPU 成本和预期行数，以向规划器提供更好的提示
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 · 28ab08f36834cec659edcd408076b1e6a4ac6506bf410d631859194f789afb01
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