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Add feature to bind as SQLWCHAR

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#292 19 条评论 6 个 reaction 已指派 0 人 在 GitHub 查看

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评估

难度
5/5
预计耗时
一周以上
新手友好度
30/100
Issue 类型
功能
描述清晰度
基本清楚
活跃度
停滞
领域
databases

调研方向

从 SQL_CHAR、SQL_VARCHAR 和 SQL_CLOB 的绑定行为开始,并比较 issue 中描述的 SQL_C_CHAR 和 SQL_C_WCHAR 路径。查看示例 #284、#290 和 #291,然后确定完成的更改是在 UNICODE 下始终使用 SQLWCHAR,还是提供一个运行时选项,并通过测试覆盖所选行为。

由索引模型根据 Issue 内容生成。

描述

confirmed

Windows is very UTF-16 centric while Node.js is very UTF-8 centric. While it can also handle UTF-16, it does not deal with other encodings well at all (at least in the NAPI addon). As a result, the package has been built as UNICODE since July 2020. This has fixed many encoding issues, since various strings are now passed back and forth using UTF-16 without issue. However, when binding, SQL_CHAR, SQL_VARCHAR, and SQL_CLOB types are still bound as SQL_C_CHAR, not SQL_C_WCHAR. This works most of the time, but there have been many issues when databases are in the native Windows encoding (which outside of an experimental feature is never UTF-8). See #284 #290 and #291 for examples.

While some drivers have settings to use UTF-8 instead, that is driver-specific and not all do. It would be much better to either always bind as SQLWCHAR when UNICODE is defined (ie. Windows) or add a runtime option to enable it (enabled by default when UNICODE is?)

主要语言
JavaScript
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159
派生
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PR 合并指标
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  4. 提交 Pull Request,并在描述里引用这个 Issue 编号。

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