Linux系统通常对关键值绑定有更好的支持，但在一定程度上依赖于您所使用的窗口管理器。
Linux systems usually do a better job with getting the key bindings right, though part of that depends on which window manager you use.
优化器将根据行中列的函数依赖性来推断关键值选择。
The optimizer will deduce key value selection based on the functional dependency of the column within the row.
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