问题遇到的现象和发生背景
参照教程https://www.jianshu.com/p/c992c3035f04
问题相关代码，请勿粘贴截图
运行结果及报错内容
Error in .processResults(postRes, mart = mart, sep = sep, fullXmlQuery = fullXmlQuery, :
Query ERROR: caught BioMart::Exception::Database: Error during query execution: Illegal mix of collations for operation ' IN '
