虚表上的查询可能非常慢，尤其是在where子句中使用某个TimeSeries元素时更是如此。

It can be very slow to do queries across a virtual table, especially if you use one of the TimeSeries elements in the WHERE clause.

youdao

虚表上的查询可能非常慢，尤其是在where子句中使用某个TimeSeries元素时更是如此。

It can be very slow to do queries across a virtual table, especially if you use one of the TimeSeries elements in the WHERE clause.

youdao