stephencelis/SQLite.swift

Add column weights to FTS order by Rank

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#1,016 创建于 2020年7月30日

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 (6 评论) (1 反应) (0 负责人)Swift (10,145 star) (1,618 fork)batch import
enhancementhelp wanted

描述

As far as I can tell, you can't currently run a Full-text search and order by rank in SQLite.swift.

SELECT * FROM fts WHERE fts MATCH ? ORDER BY bm25(fts);
SELECT * FROM fts WHERE fts MATCH ? ORDER BY rank;

Is this feature currently available? If not, how do we order the results of a Full-text search by relevance? Is there currently a workaround?

贡献者指南

技术栈
swiftsql
领域
database
议题类型
feature
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
3
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
half day
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
stale
清晰度议题是否清楚说明期望改动、验收标准和下一步。
mostly clear
前置要求
SwiftSQLite FTS
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
35
研究方向
Review the existing FTS support in SQLite.swift, particularly in the FTS extension files. Check if ordering by rank is already possible via the query builder. If not, explore adding a method like `orderByRank()` that takes optional column weights. Look at SQLite documentation for the `bm25` and `rank` functions. The issue comments may contain further discussion or workarounds.