stephencelis/SQLite.swift

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

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#1,025 建立於 2020年10月8日

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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() + "%"))

貢獻者指南

技術棧
swiftsql
領域
database
議題類型
bug
難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。
3
預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。
1-3 hours
活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。
stale
清晰度議題是否清楚說明預期改動、驗收標準和下一步。
mostly clear
前置要求
Swift basicsSQLite queriesUnicode case insensitive comparison
新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。
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.