刚好在搜楼主标题的问题，找到了答案，顺便留在这。myodbc5a与myodbc5w为程序开发连接mysql的odbc驱动，其中：5a是ansi编码，5w是Unicode编码。myodbc5s为程序开发中配置数据源提供界面的动态链接库。翻译错误不要喷，我四级没过，情有可原。原文：Driver (myodbc5a.dll and myodbc5w.dll)
The most important part of Connector/ODBC is the driver.
Application developers can link directly to the driver but
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