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st: About empty dataset
I noticed that the Stata program will automatically stop when the dataset is empty after deleting the missing value and give out the wrong information: __0000001 not found.
In my program, I need to run many programs on the same dataset, so I open the original dataset many times in a big program. Every time I drop some variables and observations, the whole program is stoped if one of the dataset after selection is empty.
I wonder if there is some command which can force the program to go on even if the dataset is empty in this subprogram after selection.
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