Ideally, you should try to avoid character conversions to improve performance by using the same code pages between the source and the target of the conversion.
理想情况下，您应通过在转换的源和目标之间使用相同的代码页，尽力避免字符转换以提高性能。
2
Character set conversion into the database code page is performed if necessary.
如有必要，执行字符集到数据库代码页的转换。
3
To avoid code page conversion issues, the recommended approach is to use character FOR BIT DATA or BLOB instead of character types.