stephencelis/SQLite.swift

Like does not work with Russian symbols? (ICU support)

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#1,025 创建于 2020年10月8日

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 (4 评论) (0 反应) (0 负责人)Swift (10,145 star) (1,618 fork)batch import
help wantedquestion

描述

Hello. I use like with lowercaseString and Russian symbols but LOWER doesn't convert them to lowercase in the query. I tried to create my own function but it didn't work for me. How to solve this problem? Thanks.

// in name value: ПРИВЕТ from database let search_name = "Привет" user.filter(name.lowercaseString.like("%" + search_name.lowercased() + "%"))

贡献者指南

技术栈
swiftsql
领域
database
议题类型
bug
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。
1-3 hours
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
Swift basicsSQLite queriesUnicode case insensitive comparison
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。
50
研究方向
Investigate SQLite's ICU support: by default, LOWER() only handles ASCII. The user needs a case insensitive LIKE for Cyrillic. Options include using SQLite's ICU extension (requires loading the ICU extension) or registering a custom collation. In SQLite.swift, custom functions can be added via Connection.createFunction. The user attempted this but failed. Check the GitHub issue comments for details. Also review SQLite.swift documentation on custom functions and collations. Potential fix: provide an example or modify the implementation to support Unicode case insensitive matching.