case when then then后中文显示问号

在case when语句中，当then后的中文显示问号，可能是由于字符集设置不正确导致的。可以通过执行以下命令来查看字符集设置的相关信息：show variables like 'character_set_%';
通过上述命令可以获取到字符集相关的设置信息。
如果字符集设置不正确，可能需要修改相关参数来正确显示中文字符。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
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