Data for all cached tables is kept in a file named database.data, while text table data is kept in any delimited text file (like CSV files) named by the set table source non-standard SQL statement.

所有缓存表的数据放在一个名为database . data的文件中，而文本表的数据则放在由set table source非标准sql语句命名的任意分隔文本文件(像CSV文件)中。

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