If the file ends with a delimiter the (zero length) file content following the final delimiter is still propagated although it contains no data.
如果文件以分隔符结尾，则仍然传播最后一个分隔符后面的(零长度)文件内容，尽管其中没有包含数据。
usedefaults no yes yes Specifies that the default value defined on a column is to be imported or loaded if the input data file contains no value for that column. Given import data file tabdata.del
usedefaults noyes yes指定如果输入数据文件没有包含某列的值，就导入或载入该列上所定义的默认值。
The specified file is not a valid spreadsheet or contains no data to import.
指定的文件不是有效的电子表格或者没有包含要导入的数据。
Initially, a sparse file is an essentially empty file that contains no user data and has not yet been allocated disk space for user data.
最初，稀少文件是一个基础上是空的文件，其中包括没有用户数据和尚未分配的磁盘空间，为用户数据。
If the system crashes during this time, the rename operation may already be committed in the journal, even though the new file still contains no data.
如果系统崩溃在此期间，重新命名操作，可能已经在杂志上，尽管新的文件仍然不包含任何数据。
If the system crashes during this time, the rename operation may already be committed in the journal, even though the new file still contains no data.
如果系统崩溃在此期间，重新命名操作，可能已经在杂志上，尽管新的文件仍然不包含任何数据。
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